# CAL/OSHA POCKET GUIDE FOR

## THE CONSTRUCTION

# INDUSTRY

www.dir.ca.gov

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This Guide . . .

does not provide full legal interpretation of Cal/OSHA

Readers should refer directly to Cal/OSHA Title 8 regulations in the California Code of Regulations (www.dir.ca.gov/samples/search/query.htm) and to the California Labor Code [http://leginfo.legislature. ca.gov/faces/codes.xhtml] for detailed information regarding the scope, specifications, and exceptions of a particular regulation and for other requirements that may be applicable to their operations.

Publications Unit - Updated June 2019

Table of Contents

To obtain copies of Cal/OSHA safety and health publications, contact a Cal/OSHA Consultation Services office listed in the back of this booklet, or go to www.dir.ca.gov/dosh/puborder.asp.

AERut This PRFkHW GXLGH............................................................ 4
WRUNSODFe SDIety
regulations or their underlying statutes.
Readers should refer directly to Cal/OSHA Title 8

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ExcDYDWion, TreQFhHV, aQG EDUthwork
Explosion
iWHs........................................................
PHUsRQDO PrRWHFtLYe
QZays.............................................................. 113
ii CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXstry | JXQe 2019

Roofing Operations.....113
Scaffolds.....118
Silica Dust.....132
Stairways.....133
Temporary Agencies.....134
Toeboards.....135
Toilets/Washing Facilities/Sanitation.....136
Tools and Equipment.....137
Traffic Control.....143
Training.....143
Tunnels and Tunneling.....145
Welding, Cutting, and Other Hot Work.....147
Wood Preservative Chemicals.....150
Work Over or Near Water.....151
List of Acronyms.....152
Index.....155

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About This Pocket Guide

The coQVtrXFtLRn indXVtry LQYoOYHV many tySHs RI work actLYitiHV 
covHUed by numerous reJXlatiRQs in

• SuPPDrizes safety requiremenWV IUom T8 CCR that
aSSly to tKH construction industry. It is QRt meDQt t

Workplace Safety and Health
ProDFtLYe sDIHWy aQG heaOWh prRJrDPs are an HIfectLYe way to prevent wRUkplace injuriHV and illQHsses aQG reduce the costs    of doing bXViness.

• Lists the mDMRU suEMHFt hHDdinJV 
the

• CoQWaiQV abEUeviatiRQs as describHG in the 
sHFtLRn.

• Is not DOl- iQFlXVLYe. The coQWeQWs 
liVWs,

ZRrk tRJethHU to ensure thDW safHWy
of

covHUed by numerous reJXlatiRQs in • hiJKer SURGuctivity DQd emSOoyee

• h igKHr TXDOity RI wRUk and proGXFts ReJXlatiRQs (

• f ewer wRUker

• lower compensatiRQ insurance cost and

• lower emSOoyee

A written InjXUy DQd Illness PrevHQtion ProJUam (IIP
aSSly to tKH construction industry. It is QRt meDQt t
eiWKer a VXbVWLWXWH

eiWKer a VXbVWLWXWH
alpKDbeticDO order in
of ContenWV, and HDch subject hHDding is linked
to its cRQtHQt.
eDFh

eDFh 
subject heDGing within its scRSe and may also
incluGH best SUactices in sDIety DQd
the bXOle WV,

TKH employHU must provide safe accHVs to and from all wRUk 
lHYeOV or suUIDFHV. ReJXlated meaQV RI DFcHVs DUe DV follows:

oQOine.
B. Aerial dHYLFHV, sXFh DV cKHrry pickHUV and boRP trXFks,

aQG exceptioQV
Access

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C. ElHYatLQg work SOatfoUPs, sXFh DV vHUtLFal towers DQd

D. IndXVtrial trXFks, such DV roXJh tHUrDLn foUNlLIts, may be XVed

E. Elevators (constructiRQ)

1. FRU strXFturHV or bXLlGLnJV 60 ft. RU more DEove

2. At dHPolLWiRQ sLWHV of sHYen or more storiHV or 72 ft.

Note: Elevators must be inspected and tested in the presence of a DOSH representative before use. A permit from DOSH is required before operating. 1604.29(a)

F. PHUsRQQHl hRLsts may be used at special cRQstructiRQ 
sXFh DV EUidgHV aQG GDPs, if aSSrRYed

G. LDGdHUs can be used to JDin access to wRUking sXUfaces aERve DQd bHOow JUoXQd level uQGer certDLn conGLtions.

I. 6WaLUZays mus t EH instDOled in bXLldings thDW KDve two RU 
stRUies or are 24 ft. or more in hHLJKt.

1. FRU bXLldings of two RU tKUee stRUies, at lHDst one stairway is 1.
reqXLred.

4. Rides on lRDGV, hoRNs, sliQJs, or coQFrHWe bXFkHWs

scLVsRU 
Administrative Requirements
lifts, DUe GHsignHG to raise aQG hROd a work platform in a

2. FRU bXLldings of more than three stories, two RU

J. TKH fROlowing routes RI access are

1. EQGless EHlt-type manliIWV.

3. Cleats nDLled to studs.

sXEstDQtLDOO\ vHUWLFal axLV. 
Employers must meet certDLn admiQLstrative rHTuirements
to that may incluGH Cal/OSHA QRtificatiRQ, specific registrDWion, 
elevate and position workers XQGHr spHFific conditiRQs. 
JUound 
lHYel RU 48 ft. beORw ground lHYHO. 1630 (a)

2. 6LQgle-cleDW ladGHrs mRUe than 30 ft. RU dRXble
laGGers

A. DocXPeQWs reqXLred DW the or jRE sLWe
1735 (r)

1735 (r)
1. I njury and I llness PrHYHQtLRn ProJUDP: ProgUDP GRcXPeQW 
Note: Elevators must be inspected and tested in the 
presence of a DOSH representative before use. A permit

2. Code RI SDIe PUDctLFHV.
sLWHV,

sLWHV, 
3. All CDO/OSHA-reqXLred permits.
sXFh DV EUidgHV aQG GDPs, if aSSrRYed

4. All Cal/26HA eQJineHU.-rHTuirHG cHUtLILFDWioQV.

LDGdHUs can be used to JDin access to wRUking sXUfaces aERve DQd bHOow JUoXQd level uQGer certDLn conGLtions. 5. RespirDWory Protection ProJUam for all work sites 
respirators are mDQdDWory.

6. Heat illness  RU prHYeQWiRQ.
1623, 1624, DQG 1625

mRUe 
stRUies or are 24 ft. or more in hHLJKt. B. PRVtings required at the MRE sLWe 1629

tKUee stRUies, at lHDst one stairway is 1. Cal/26HA pRVtHU “SDIety aQG HHDlth PrRWHFtion on 
1629 (a)( 4)

2. Code RI SDIe PUDctLFHV. mRUe 
rHTXLred. 1629 (a)(4)

rHTXLred. 3. EmergHQcy SKone QXmbHUs. 1629 (a)(4)

4. EmSOoyee access to rHFRUGV QRWificDWion to iQIRUm 
HPployHHs
3204(g)
-cOHDW

-cOHDW 
than 24 ft. long. 5. OSHrating pHUmit for DLr tanks. 1629 (c

9. Cal/OSHA UHJLstUDtLRn.

10. CitaWLons.

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11. Hazard wDUQLQJ signs DW the fROlRZing

a. WKHUe DVbHVtos work LV EHing dRQe.

b. WKHUe lead work LV EHing dRQe.

c. At confinHG spaces.

e. On crDQHV, coQFrHWe pXPSV, high

d. At coQWrolled access zones.

f. On pRZGHr-actuDWed tools.

g. On lasHUs (lasHU levels, etc.).

h. On air compressors with an

C. RecordkeeSLng reTXiremHQts are incluGHd in T8 CCR for

1. Cal/ OSHA LRJ 300.

Note: You can download a package of forms and instructions

www.dir.ca.gov/dosh/etools/recordkeeping/index.html and click on "Forms and Instructions."

2. Lock- RXt/blRFk- out aFWiYLty reFRrds. 3314

1. 6HULRus LQjury or ilOQHVs, or GHath. A repRUt must EH mDGe 
immediDWely by teleSKone (within 8 hRXrs) to a district

D. Reports and QRtLILFDWioQV to Cal/26HA mXVt EH mDGe of

job sLWe2.s: Blasting DFcidHQts or unXVuDO occurrHQces. A report must 
be
341.10, and 1529 (k)

3. OSHration aQG maintenance activity rHFords.

4. MHGical surveillDQce SUoJUam DQd

5. Training rHFords.

6. InVS HFtion rHFoUGs.

341.10, and 1529 (k)
3.
( mConstrXFtion DFtLYLWiHV anQXal peUPLW. EmployHUs gRYHUned)

4. AsEHstRV-UHlated work. The DOSH GLstrLFt RIfLFe mXVt 
- lift truFNs, etc., 
voltage wDUQLQJ signs). 2947, Group 13

voltage wDUQLQJ signs). 2947, Group 13
5. Use RI regXOatHG carcinogHQs. The employer must 
oSHratiRQs invROving the use of a regXOated carcinRJenwitKLn 15

- VWart 6. CoQVtructiRQ involving leDG-work. 
be made to the DOSH GLstrict office 24 hours 
the

the 
E. Employers should promptly QRtify affHFted emSOoyeHV of 
pXUSRse of estDElisKLQJ a historical rHFRUd of comSOiaQFe.
moQLtRUing rHVuOWs of ANY rHTuirHG moQLtRUing 
TKHse reTXiremHQts include the

for Log 300 recordkeeping from the Cal/OSHA Consultation 1. AsEHstRV, mHWhylHQediDQiline, caGPLXm, cKURPiXP (VI),aQG lHDd: Notify within 5 workiQJ GDys fROlowiQJ recHLSW 
Services

2. Vinyl cKOoride: Notify witKLn 15 wRUking days follRZing
receiSW
1509, DQd 3203

1509, DQd 3203
3. FRUmalGHhyde: Notify within 15 GDys following rHFeipt 
moQLtRUing rHVuOWs.

the 
DFtLYLWiHV:

or GHath. A repRUt must EH mDGe 
• DemolLWiRQ oroffice. Employers are allowed 24 KRurs if tKHy cDQ shRZ GLsmDQtOLng RI a VWruFWXre
immediDWely by teleSKone (within 8 hRXrs) to a district
341

• Erection aQG placement of structural steHO or 
structural members other thDQ

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 9

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• IQVtDOlDWion RI mHWal RU RWKHr

• FRUming or plaFHPHnt of FRnFUeWH VWrucWXres/decNV on 
steel strXFturHV

• IQVtDOlDWion RI strXFtural frDPing (LQcOXding roRI fUDPing)

• CoQVtructiRQ of trencKHs or excavations 5 ft. or GHeper 
into wKLch a SHrsRQ is required to

• ErectiRQ and plDFHPHQt RI scDIfoldiQJ, vHUtLFDO shRUing,

• OperDWiQJ spHFLIied aLU cRPSUHVsors.

Note: Most permits can be obtained from a DOSH district office. A safety conference and a review of the employer's safety program will be scheduled before permit issuance. 341.1(c)

Exception: Permit requirements do not apply to certain activities. See 341(e).

G. Certification requirements are necessary in the following 
FLrFXmVWanFHs:

1. PowHU RSerated cranes and GHrricks excHHding 3 tons rated cDSacity shDOl not EH usHG in liftiQJ service until the eTXipment has been certifiHG by a DOSH license

1. Asbestos rHJistration. An employHU must rHJister with 
DOSH whHQ eQJagHG in asbestos

2. BlastHU’s License. The blastHU must be a licensed blaster 
or GLrected by a licensed blaster aQG EH at least 21 
.

3. Asbestos consultants and site sXUveillaQFe tecKQiciDQs 
PXst be FHrWLILed by DOSH.

2. OSHratRUs of mobile and tower cranes mXVt KDve a 
certificDWe. See excHStioQV.

Aerial Devices and Elevating systePV.
AQQuDO or Project PHUmit is neeGHd for: Work Platform Equipment

A. Aerial dHYLFHV, sXFh DV cKHrry pickHUV and boRP trXFks, 
into wKLch a SHrsRQ is required to entHU.

or fDOsework more thDQ 36 ft. hiJK.

1. OQOy aXWhorizHG persRQs may RSerate aerial OpHUating pHUmit is required fRU:
3648

2. Aerial dHYLFes PXst not rest on any strucWXre.

and  3. ContrROs mXVt EH tHVted bHIore XVe. 344.70.

Note: Most permits can be obtained from a DOSH district 4. WRUNHUs mXVt stand only on the fORor RI the bDVkHW
office. A safety conference and a review of the employer’s

5. A IDll SURWHFtiRQ syVWem mXVt
3648(o)

6. BrakHV must be set when HPployHHs DUe elevated.

7. An aHUiDO lift truck must not be moved wKHn DQ employee 
is on the elevatHG bRRm SODWform exceSW XQder coQGitions 
PowHU RSerated cranes and GHrricks excHHding 3 tons rated cDSacity shDOl not EH usHG in liftiQJ service until the eTXipment has been certifiHG by a DOSH license

B. ElHYatLQg work SOatfoUP eTXiSPeQW, sXFh DV veUWLFal 
sFLVVor liIW, and maVW
valid

valid 
certificDWe. See excHStioQV. 1618.1

3. No emSOoyee shall riGH, QRr tools, 
be allowed on a traveling elevDWHG SODWform. SHH 
DOSH whHQ eQJagHG in asbestos-relatHG work RQ 100 
IW. or PRre of VXrIDFH area

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C. TKH fROlowing informatiRQ must be disSOayed on the
3638

1. MaQXfactuUHr’s QDPe, mRGel, DQd sHUial

2. RatHG caSDcity at tKH maximum platform KHiJKt 
PDxiPXm platIRrm traYHl

4. CaXWioQV and restrictions.

3. 2SHUDtLQg LQstUXctLRns.

D. DHYLFHV mXVt be dHVigQHd to DSplLFDEle AmerLFan NDWionDO

Note: See clearances for operations near high-voltage conductors in the Electrical section of this guide.

Airborne Contaminants and Dust

TKH employHU must cRQtrRO emSOoyees’ exposure
contaminaQWs DQd employees’ skin contact with

Some of the substances listed in Table AC-1 also have specific performance standards, noted in the CSOs and the GISOs, for controlling employee exposure. These substances include asbestos (1529); cadmium (1532); lead (1532.1); benzene (5218); methylenedianiline (1535); beryllium (1535.1); concrete and masonry materials (1530.1); chromium (VI) (1532.2); respirable crystalline silica (1532.3); carbon monoxide (5155); internal combustion engines (1533), vinyl chloride (5210); and welding fumes (1536, 1537).

• ASSlying enJLneering

• PrRYiding UHspirDWory prRWHFtLYe HTuiSPeQW 
such eQJineHUing controls are nRW practicDO or fail to

Note : Check  dHYLFe: Table AC-1 frequently as the content is regularly 
updated
nXPEHr.

and 
Air Compressors hHLgKW.

GHQeral reTXiremHQts for air compressRUs incluGH:

A. Employers must obtain a DOSH pHUmit for the air tanks of

(ANSI) staQGarGV. 3638(b
Note: See clearances for operations near high

B. Warning siJQs are reqXLred for HOectric a
s to airbRUQH

s to airbRUQH 
C. SDIety valves must be popSHd weekly.
contaminaQWs DQd employees’ skin contact with

D. Air tanks must be drained SHr suEVtaQFHV

E. FDQs sKDll be JXardHG with a shroXG RU side scrHHns.

F. PRUtable DLr compressors on wheHOs must be prevHQted 
UROOLQg.

Asbestos

• ExcDYDWioQV where DVbHVtRV

daily expRVXUe
• Pipe DQd bRLler hazard

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• IQVulDWoUV RI HOectrLFDO

• PlastHU, cement, drywall, and taSLQJ

• FORor tLOH DQd tLOH

• AcousticDO cHLlings (tiles aQG sprayed

• AsEHstRV- cement piping, shingles, aQG

• RoRIing fHOt aQG seDOing

BHFause asbestos exposXUe has been liQNed to serious

A. CoQVtructiRQ projects are subject to rHJulation unGHr 
they involve oQH or more of the fROlowiQJ activities,

1. Demolition or salvage RI structures where asbestos

2. RemovDO or encDSsXOation (includiQJ SDinting
mDWerLDls thDW cRQtain DVbHVtos.

3. CoQVtructiRQ, alteratiRQ, rHSDLr, 
renRYDWion RI strXFturHV, suEVtrDWHV, or SRrtLRQV

4. IQVtDOlDWion RI SUoGXFts thDW coQWDLn

9. AsEHstRV spilOV DQd HPerJHQFy

5. Erection of nHZ aQG tKH imSUovement, altHUatiRQ,
aQG conversion of existing electric transmission

B. Cal/26HA aGPinLVtrDWLYe requLUHPHQts DUe DV
1. ReJLstration and GLstrict ofILFH

8. TranspRUtatiRQ, GLsposal, storaJH, and containmHQt of
and sLWe hoXVHNHHping DFtLYitLHs iQYoOYiQJ asbHVtRV

6. ExFDYDWLon WKat PDy inYRlYH expoVXre WR 
occXUriQJ asEHstos, exclXGing asbestos miQLQJ and

1. ReJLstration and GLstrict ofILFH
cRPpRXnGV.
.

7. RoXWine facility mDLnteQDnce.

pDQels 2. CarcinRJHQ QRtificatiRQ with exposurHV in excHVs .
peUPissLEle expRVure lLPLWs

3. TKH employHU shall notify affHFted employees of tKH
BHFause asbestos exposXUe has been liQNed to serious
moQLtRUing rHVuOWs of DVbHVtRV within 5 working 
illnHVses, Fed/OSHA aQG CDO/OSHA hDYe LPpOHPeQWed stULct

4. DOSH certificDWion is required fRU all pHUsRQs pHUforming
dXWies of an asbestRV consultant RU tHFhniciDQ.
1529 LI

1529 LI
they involve oQH or more of the fROlowiQJ activities, 5. “AsbHVtos cRQsXOtDQt” means any person wKR contracts
of the percHQtDJe of asbestos to prRYiGH SUofessLRnal heDOth DQd sDIHWy seUYLFHV 
LV

LV 
C. Training is rHTuired for all employHHs eQJagHG in ClassI throuJK IV work aQG all work in wKLch they are likely
) of
mDWerLDls thDW cRQtain DVbHVtos.

1. At the HPployHU’s expense.
renRYDWion RI strXFturHV, suEVtrDWHV, or SRrtLRQV

renRYDWion RI strXFturHV, suEVtrDWHV, or SRrtLRQV 
2. BHIore or DW the time of iQLtial that coQWain asbestRV.

aVEeVWos.3. AQQuDOly aftHU initial training.

4. In accRUdaQFe with
aQG conversion of existing electric transmission

aQG conversion of existing electric transmission D. PHUmissiEOe exposure limits (PELs): TKH emSOoyer mXVt and 
distribution lines DQd eTXipment
QDturally-

QDturally-
1. Eight-hoXU tLPe-wHLJKted average of 0.1
occXUriQJ asEHstos, exclXGing asbestos miQLQJ and

occXUriQJ asEHstos, exclXGing asbestos miQLQJ and 
2. ThLUWy-minXWe excuUVion lLPLW of 1 fibHU/cc. acWLYLWLes.

E. 0XlWL-employHU work sites are reJXlatHG uQGer

materials contDLning
2. An employHU pHUforming ZRrk
PXst

ReJXlatory reTXirements fRU wRUk activities sXEject to 3. All employHUs on site must eQVure thDW their RZn 1529 
dHSeQGing on the pHUcent, amRXnt, or type of asEHstos employHHs are QRt exposed to asbHVtos fibers due to

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F. ExpoVXre asVHVVPen ts and mRQitoriQJ are

1. Initial exSRsXUe assessmHQt must be mDGe by all
ePSloyers VXbjeFW WR

2. Daily exposure monitRUing of employHHs must be
condXFted by DOl employers disturELng matHUials that

3. All employHUs must moQLtor GDily representative 
of employees SHrforming Class I DQ

No monitoring required when:

Exceptions 1529(f)(3):

The employer has made a negative exposure assessment for the entire operation.

Employees are equipped with supplied-air respirators (SARs) operated in the pressure demand mode, or other positive pressure mode respirator. However, employees performing Class I work using certain control methods shall be monitored daily even if they are equipped with SARs.

4. A written respiratory SUotectiRQ prRJrDP must EHimpOHPeQWed in DFcordDQce

1. 7Ke emSOoyer must provide DSpropriDWe respirators

2. TKH apSURSriate respiratRU must be sHOHFted from 
of

2.rHTXLred VDFuum cleDQHUs with KLJK-HIfLFieQFy paUWLFulDWe air

H. Methods of comSOiance and work SUactices DUe noted

3. Prompt cleaQXp and disposal in laEHlHG leak 1529 before or DW the oQVet of 
prRMHFt. 1529 (f)(2containers)

condXFted by DOl employers disturELng matHUials that 4. SpeFLILc work praFWices IRr diIIerent aFWLYLWLes are DOVo oXWlined in 
contain more than 1% asbestos in Class I aQG II

5. StriSSiQJ RI fiQLsKHV shall EH coQGXFtHG
exSRsXUe 
of employees SHrforming Class I DQ 1529(g) d II ZRrk.

I. ProKLELted work practices DQd cRQtrols DUe as Exceptions 1529 (f)(

1. SSUaying of DQy suEVtance contDLning DQy amRXnt No monitoring required when:
asbestos (sHH exception).

2. High-spHHd abrasive disc sDZ cutting of ACM or 
witKRut aSSrRSriate poiQW of cut ventilatRU or HQclosXUes

3. Using cRPprHVsed aLU to rHPRYe DVEHstRV RU mDWHUiaOVcoQWaiQLng DVbHVtos

4. Dry sweHSing, shoveling, or otKHr dry cleDQing of GXst 
ACM or 
PHUioGLc exposure monitRUing of employees must becondXFted when disturELQJ asEHstos-c oQWaLQing mDWeriDOs

J. Employer QHeGV to inclXGe asEHstos in the HAZCOM 
- 
relatHG activities DQd exposures, as RXtlinHG in

1. EmSOoyeHV hDYe DFcess to lDEeOV 
to 
employHHs; however, employHUs shall not use filtering
2. EmSOoyeHV fDFepiHFe rHVpiUDtRUs fRU are trDLnHG DV

2. EmSOoyeHV fDFepiHFe rHVpiUDtRUs fRU are trDLnHG DV pHU 5194

3. Warning siJQs shRZn below are display
Table 1 
)(3)(A)( 1) aQG 1529 (h).

filters fRU powered 
ASBE67OS
- pXUifying respirators.

bHORZ:

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4. Labels on containers for protective clothing and B. All blasting accidents affect ing worker safety must be
equipment, scrap, waste, and debris with asbestos reported to DOSH within 24 hours. fibers **5248** (a) show the following information as per **1529** ( k)(8)( **C**):

*Note: Accidents involving a serious injury or illness must be*

DANGER *reported to DOSH immediately but not longer than 8 hours.* **342** *(a)* CONTAINS ASBESTOS FIBERS

C. Explosives must be stored in the proper type of magazine
MAY CAUSE CANCER (see **5252** Table EX-1), **5251** (a) CAUSES DAMAGE TO LUNGSDO NOT BREATHE DUST

D. AVOID CREATING DUST Caps and detonators must be stored in separate magazinesaway from other explosives. **5251** (b), ( **c)**
E. Storage requirements are discussed in **5251**, **5252**, and **5253**.
F. Transporta tion requirements are discussed in Subchapter 7
Article 115 (Index). **5270**

# Blasting (Abrasives/Sand)

G. Safety rules for blasting operations are as follows:
Regulations for blasting with abrasives and sand include the following:

1. No smoking or open flames are permitted within 50 ft.
explosives handling. **5276** of ( a)

A. Employees must wear supplied-air respirators (covering thehead, neck, and
2. No source of ignition, except during firing, is permitted shoulders) during abrasive blasting :
in areas containing loaded holes. **5276** (a)

1. W hen dust may exceed limits specified in
3.5155 Only non ,
- sparking tools are to be used for opening
**5151** (b)( **1)(B**). containers of explosives. **5276(b**)

2. W ith silica sand or where toxic material evolves.
4. Explosives must be kept clear of electrical circuits by 25 ft. **5276** (d)
**5151** (b)( **1)(C**)

*Note: A dust filter respirator may be used for 2 hours during*

5. Unused explosives must be returned promptly to the
*abrasive blasting if the concentration of silica dust is less* magazine. **5276** (e) *than ten times the limit specified in* **5151** *(b)(1)(C).*

B. Hearing protection must be worn as required by
6. Blasting mats must be used when flying material
**1521**.
damage property. **5276 could** (f)

C. Body protection must be worn as required by
7. A tally sheet that records all movement of explosives
**1522**.
must be kept at each magazine. **5251** (n)

**Blasting (Explosives)**8. Holes may be loaded only after all drilling is complete. (see exception in **5278(a**), **5278** (a))

A person must hold a valid California Blaster’s License and

9. No vehicle traffic should pass over loaded holes. **5278** (c)
must be physically present when performing, directing, and

10. Loaded holes must be attended. supervising blasting operations. No person under the age of **5278** (o) 21 years shall be permitted in any explosive magazine or be
11. Workers must not try to quench an explosive’s fire. (l)
permitted to use, handle, or transport explosives. **5238** (a),

(g)
12. Explosives at a blast site must be attended. **5278(o**)
*Exception: Persons 18 years or older and under the direct personal supervision of a licensed blaster.*

13. No one but the attendant(s), the loading/detonation
crew, inspection personnel, and authorized supervisorypersonnel shall be allowed within 50 ft. of the loaded holes. (o)(3), ( **w)( 3)**

A. Blaster’s License requirements are discussed in **344.20**.
**18 Cal/OSHA Pocket Guide for the Construction Industry June 2019** Cal/OSHA Pocket Guide for the Construction Industry | June 2019 19

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14. Blasts shall QRt be firHG withRXt the licensed
in-cKDrJH vHUifyiQJ the conGLtions listed in

Carcinogens

1. FRU all regXOatHG carcinoJHns thDW spHFify a

2. Initial use/chaQJes in reportHG infRUmation of a reJXlatHG
carcinogHQ shDOl be reportHG in writing to Cal/OSHA

3. Employers with temporary wRUksites nHHd to provide

blastHU-
Code of Safe Practices
in-cKDrJH vHUifyiQJ the conGLtions listed in

• A rHSoUW of the RFcurreQFe RI an HPHUgeQFy DQd the

witKRut a wDUQLQJ signDO/procedure. The siJQals shDOl 
The CoGH RI SDIe PrDFtLFHV LV a set of worksLWe ruOHs thDW 
stipulate hRZ to pHUform job duties safely aQG to keep the wRUk

5. In cDVe RI an HPeUJeQFy:

A. TKH employHU must develop DQd aGRpt a written CRGe of

- caXVing) chHPLFDOs, DV 
Article 110 ReJXlated CarcinoJHns 
preseQW LQ coQVtrXFtion mDWeriaOV, the HPployHU mXVt cRPply

preseQW LQ coQVtrXFtion mDWeriaOV, the HPployHU mXVt cRPply 
B. It mXVt EH spHFLILF to the HPployHU’s operDWioQV.

C. It mXVt EH SRstHG DW eDFh job reTXLUHPeQW site office RU be readily avDLlDEle
for the emSOoyHU to establish a rHJulated area, use of a
regXOatHG carcinoJHn within such a regXOatHG area shDOl

regXOatHG carcinoJHn within such a regXOatHG area shDOl
D. Workers, when first hirHG, shall be given instructiRQs

E. SXServisRUs sKDll cRQduct “toolbox” or “tailgDWe” safetymHHtinJV, RU tKH eqXLvalent, with tKHir crews at lHDst every 
carcinogHQ shDOl be reportHG in writing to Cal/OSHA

A competent pHUson is GHfiQHd in locDWiRQ. 5203 ( e)1504
capaEOe of identifying existing aQG prHGictable hazards in tKH 
worksite notification, DQd emergeQFy repRUt shDOl beposted for DIfHFted HPpORyeHV to sHH.

Concrete Construction

facts obtDLnDEle at that time sKDll be made to Cal/OSHA wLWhLQ 24 hRXrs.
days.
TKH safety data sKHet (SDS) and labels on tKH coQWDLQHr must be 
reviewHG to GHtermine the SUesence of carcinoJHns.

---

• BurQV, rDVKHs, and skin irrLWDWioQV fURP expRVure to

• 6LOLFosis, a UHspiratory disHDse causHG by inhDOiQJ silicadXVt frRP expRVure to concrHWe dXVt dXUing such

• BrokHQ bRQes, lacerations, DQd crusKLng injXUies causedby falls from elevated work VXrfaFHs; imp

Because the hazards associated with concrete construction are great, employees must use appropriate personal protective equipment and conform to safe work practices at all times (see below).

A. PlacHPeQW of CoQFrHWe.

1. CoQFrete pumSLQJ equipment DQd placing booms 
be set

2. TKH manXIactXUer’s opHUation maQXal shDOl be maiQWDLQHd 
in legible coQGition aQG avDLlaEOe at the

3. CoQWrols in tKH HTXLpmHQt shall KDve their function 
mDUked.

1. All PDVRnry walls PRre WKan 8 IW. high PXVW be 
prHYeQW RYHUtXUning DQd cROlaSVe unOHss t

4. OperDWiRQ RI coQFrHWe plDFing ERRPs in proxLPLWy RI
overheDG hiJK
5. ETXipmeQW sKDll be inspected by a qualified RSerator

b. TKH LAZ sKDll be established RQ tKH 
have scaffROGLQJ
FRnFUeWH.

C. MDVoQUy coQVtrXFtLRn.

5. ETXipmeQW sKDll be inspected by a qualified RSerator 
Forms/falsework and YHrWLFDl VKoring in the ForPV, Falsework,aQG VerticDO SKRring sHFtion of this guide.

B. Forms/falsework and YHrWLFDl VKoring in the ForPV, Falsework,aQG VerticDO SKRring sHFtion of this guide.

c. 7Ke ZLdWK RI WKe LAZ shDOl EHZDllHTXDl
6LOLFosis, a UHspiratory disHDse causHG by inhDOiQJ silicadXVt frRP expRVure to concrHWe dXVt dXUing suchoSHratiRQs as concrete cuttiQJ, drilling, grinGLQJ, RU
1722(a)(3)

d. TKH LAZ shDOl be entered RQly by employees actively
eQJaJHd in cRQstrXFting the wall. No RWKHr 
BrokHQ bRQes, lacerations, DQd crusKLng injXUies causedby falls from elevated work VXrfaFHs; imp alement by 
rebDU or otKHr objects;

rebDU or otKHr objects; 
e. TKH LAZ sKDll remain in SOace XQtil the wall isaGHqXDtely suSSortHG to prevent collDSse uQOess the

D. 3Uecast, preIDbriFDWHd FRnFUeWH FRnsWUuFWion, WLlt-up,pDQels.

1. An erection SODQ, DGdeQGa, and SUocedXUe shall EHpreSDrHG by RU unGHr tKH direction of a 
shDOl 
-up and RSerated according to manufac

-up and RSerated according to manufac 2. TKH erHFtion plan, DGGHnda, aQG procHGure shDOl 
gXLdeliQHs aQG the a

3. Job VLte iQVpectiRQs shall be mDGe by the respRQsiEOe
in legible coQGition aQG avDLlaEOe at the jRE sLWe eQJineHU (RU rHSrHVentDWive) dXUing tKH course of.
cOHDUly

4. ProSRsHG field modificatioQV shDOl be aSSroved by cOHDUly

E. ReEDr DQd other imSDlement hazDUGV.
- voltaJH lines shall be in accordance

c. ApprRYed troXJKV DQd cRYers SHr 
d

2. Employees wRUking aERve JUaGH or aERve any 
EUDFed to
prHYeQW RYHUtXUning DQd cROlaSVe unOHss t KH wall LV

d 
3. Job-bXLlt woRG protective covers aQG trouJKs sKDll is beLQg cRQstrXFted and mXVt
conform to tKH followiQJ: bXLlt of at leDVt “staQGard grDGe” DouJODV

---

4. MDQufactXUed protective covHUs sKDll be DS
OSHA

5. PHUsRQDO fDOl protectiRQ (RU eTXivalent) 
while emSOoyees SOace or tie

Exception: Reinforcing ironworkers may travel point-to-point horizontally or vertically on reinforcing steel up to 24 ft. above the surface below if there are no impalement hazards.

IllustrDWion 1

• TKH troXJh desiJQs sKRwn above can be used whHQ
employees are workiQJ at hHLghts of 6 ft. RU less “above

• If emSOoyees DUe workiQJ at hHLJKts DEove 6 ft.
dHVign must be specifiHG by an HQJLnHHr (Ca

SURYed by • Job- EXilt wRRd troXJKV must be coQVtrXFted RI DW Cal/ 
in accordance with 344.90. lHDst “stDQGDUd JUDGe” DRXJODV

IllustrDWion 2 rHLnfRUciQJ steel | Protective Covers LQ waOOV,
columns, piers, aQG otKHr structXUes mRUe than 6 ft.

• TKH prRWective covers must EH Cal/OSHA

• The cRYer suUIDFe must be DW OHDVt 4 in. sqXDre.

• The SURWHFtive cRYers XVed “DERYe JUDGe” mXVt EH
GHVigQHd to 
• The SURWHFtive cRYers XVed “DW JUade” mXVt be

0XVKrooPHd FDps canQRt be XVHG DV imSDlHPeQW prRWHFtion

• The SURWHFtive cRYers XVed “DW JUade” mXVt be
GHVigQHd

employees are workiQJ at hHLghts of 6 ft. RU less “above graGH.”
ProtrXGing rHEDU or other impalemHQt KDzard

---

6. GuyiQJ aQG suSSorting of all rHEDU for wDOls, piers, columns,
and VLPLlar YHrWLFDl VWruFWures are

7. WLUH mHVh rROls shall EH sHFuUHd to prHYeQW 
UHFoLOLQg actLRQ.

F. CoQFrete finisKLng

1. PowHUHG fiQLshing tRRls must be eqXLSSed with a deDG
tySH control.

2. Bull flRDt hDQdlHV mXVt be coQVtrXFtHG RI a

Confined Spaces

Every y eDU several confined space eQWraQWs DQd wRXld
die from KDzards, sXFh as oxyJHn deficiency, toxic DQd exSOosive

• RecogQLze cRQfLQed spDFes

• KQRZ, uQGHUstaQG, and HIfectively imSOHPHQW 
Article 37 (
A c oQIinHG spDFe LV dHIinHG LQ 1951

A. A c oQIinHG spDFe LV dHIinHG LQ 
the follRZing

1. Is l arge eQRugh and so configured that an emSOoyee cDQ boGLly 
entHU LW

4. C oncUHte pLHr cROXPQV

B. TKH fROlowing DUe examples of some RI the locDWions

1. Pits (such as eleYDWRr, eVFalaWRr, puPS, YDlYH
eTXipment)

and VLPLlar YHrWLFDl VWruFWures are 5. SeZHrs

2. Has limitHG RU restricted meDQs for eQWry and exit

6. Storm drDLns GDQJHURXs
171 1

171 1
7. EQFlosHG beams

8. VHVsHOs

9. C essSRols

10. TQRQcRQGXctive urbines

material if they could come iQWo contDFt with eQHrgized C. A permLW- reqXLred cRQfiQHd space is defined in elHFtrical coQGuctors.
confiQHd spDFe that also

1. CoQWaiQV or KDs a potential to cRQtain a hazDUGRusatmosphHUe

2. CoQWaiQV a material tKDt KDs the poteQWiDO fRU engulfing DQ-be rescuHUs eQWraQW
die from KDzards, sXFh as oxyJHn deficiency, toxic DQd exSOosive 
atmRVpKHrHV,

atmRVpKHrHV, 
3. Has an iQWernDO coQIiJXrDWion sXFh tKDt an eQWraQW could betrDSpHG or asphyxiated by
of them are 
-rHTuired confined spaces.

4. CoQWaiQV any otKHr recognizHG serious safety RU hHDlth T8 CCR
1950- 1962) aQG 5158 reTXLrHPHQWs hazard

D. BHIore stDUting work at a worksite, the employHU must have a 5158 coQWaiQV cHUtain rHTXLrHPeQWs QRW fRXnd in 
competeQW pHUson iGHntify DOl confined spaces aQG permit
space that exKLELts
chDUDFtHUistLFs :

chDUDFtHUistLFs :
E. Exposed e mSOoyees at the worksite must be informed of any
pHUmit spaces by pRVting GDQJer sigQV or by any othHU eqXDlly effective meaQV. Employees
.

F. WKHQHYer pRVsible, HPployHHs shRXOd DYoLG HQtering thHVe uSDncy. spaces or use eTXipment tKDt DOlows work to be done from the
thDW may

, or otKHr
(Injury aQG IllQHss PrevHQtion Program)

• ArticOH 6 (ExFDYDWLons)
XWilLWy)

XWilLWy)
• ArticOH 37 (CRQfLQed SpDFHV in CoQVtruction) RI the
or RWher liquid, solidCoQVtructiRQ Safety OrGHrs, or

---

• SHFtion 5158 (2WhHU CRQfLQed SpDFe OpHUDWioQV)

2. All affected employHUs DUe reqXLred to have a written pHUmit
. In JHQHrDO, the space SURJram
employHU mXVt have:

• ProcHGXUes to iGHntify aQG evDOuate DOl permit

- A system for preparing, issuing, using, and canceling entry permits.

- Procedures to test and monitor the permit spaces before and during all employee entries.

- Effective controls of all existing and potential atmospheric and/or physical hazards inside the permit space.

- Procedures to have an attendant outside the permit space at all times while employees are working inside.

- Employee and supervisor training on safe work procedures, hazard identification and controls,and rescue procedures.

- Effective rescue and emergency procedures that are immediately available on site.

VWruFWXre) PDy FRnsWLWXte a perPLt-reqXLrHG confined 
spDFe cRYered by AUWLFle 37 reTXirHPeQWs

b. CoQVtructiRQ wRUk reJXlated by the TuQQHO Safety
Orders
tKDt comSOies with s HFtLRn 1953
-rHTuired

- Procedures to coordinate entry operations when employees of more than one employer enter the permit space.

(1)KLs is just a SDrtial list of the rHTuirements of a SHrmit sSDce T
proJUam

NoWH:

-rHTuired 
c. CoQVtructiRQ wRUk reJXlated by GHQeral InGXstry Safety2UGHrs, *URXp 26, DivLQJ 2SHUDtLRQV
confiQHd spacHV before employee entHU tKHm
• MHDsures to preveQW unauthRUized eQWry into permitspDFHV

• MHDsures to preveQW unauthRUized eQWry into permitspDFHV
d. CoQVtructiRQ work reJXlatHG by the GeQHral Industry 
6Dfety 2UGHUV, ArticOH 154, 3UHssXUL]HG WoUNsite

GHscULEHs SHUPLW- reqXLrHG cRQfinHG spDFe
reqXLremHQts for nRQ- cRQstrXFtion RSHratLRQV

Corrosive Liquids
Employers must provide the follRZing whHQ employees haQGle

Corrosive Liquids
Employers must provide the follRZing whHQ employees haQGle 
FRrroVLYHs:

• PHUsRQDO protective eTXipment.

• SafHWy dDWa sKHHW s (SDS) in EngOLsh.

• ProSHrly labHOHG contDLnHUs with approSUiate
hazard wDUQLngs.

• An eyewash DQd a dHOXJe shower
3400

HazarGV thDW are associDWHG with crane operations 
elHFtrocution from ovHUhHDd pRZHU lines DQd eTXipment fDLlures 
cOH 6, ExcDYatioQV. HowevHU, a confiQHd 
spDFe creDWed within an excDYDWion (e.g.

• A written hazDUd commuQLcation (HAZCOM)

spDFe creDWed within an excDYDWion (e.g.

RefHU WR s
Cranes

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 29 in T8 CCR s HFtLRQV 1610 – 1619, 1694
1619

To maintain safe and healthful working conditions, employers and employees must ensure that:

1. All reqXLremHQts, incluGLQJ prohibitions

3. All crDQe opeUDtRUs KDYe a valid ceUWLIicate RI cRPpHWeQFy

2. MDQufactXUer’s instructions DUe

4. Necessary tRRls, SUotective HTuipment, and trainiQJs 
proviGHd.

Below is a summary of the regulatory requirements for cranes and derricks used in construction:

A. GHQeral reTXiremHQts for cranes and dHUricks are givHQ 
VHFWLons 1610.1
1. Scope DSpliHV to SRwer RSHUatHG HTuipmHQt whHQ usHG

1. Scope DSpliHV to SRwer RSHUatHG HTuipmHQt whHQ usHG 
construction tKDt can hRLst, lRZHU and horizontally move a

2. D esign requirHPents are givHQ in

7. FDOl protection is critical in crane RSerations aQG 
be provided by employers. TKH fDOl prRWectiRQ

, DQd lbs. or less, the employer must eQVure tKDt all RI tKH 6060. 1610 –
FRvers Cranes and DerriFNs in ConVWruFWion, 1694 
Side Boom Cranes,

Side Boom Cranes, 
9. FRU cranHV with a rDWHG KRistiQJ/lifting capacity 
lbs., the employer must HQsXUe that the cranes, derricks,

4. Design, FRnstruFWion, and testing of cranHV and dHUricks
with ovHU 2,000 lbs. of KRistiQJ/lifting cDSacity must

10. A cRSy of the cXUrent certificatiRQ must be avDLlaEOe 
eDFh craQH DQd dHUrick or at tKH project site.
DUe PHt.

11. Proof lRDd tests aQG examiQDtioQV of craQHs aQG tKHir
accessRUy gHDr must be cRQducted as pHU

12. Do QRt oSHrDWe craQHs with wheels or WUacks off the 
for the specific type of crDQe tKDt they are oSHrDWing.
or wRUking sXUface at any time unless SURSerly bearing onoXWriggHUs RU stabilizHUs. 
DUe

B. SeFWions 1611.1 throuJK 1611.5 
reqXLremHQts related to assemEOy and disassemEOy
aQG perform tasks safely at all WLPHs.

aQG perform tasks safely at all WLPHs.
1. WKHQ assHPEOing or dLVDVsHPblLQg
BHORZ is a summary RI tKH rHJulatory reTXiremHQts fRU cranes (or attachments), the emSOoyer mXVt comply with all
in

in 
2. –TKH geQHral reqXLrements for assemEOy and GLsassembly 1610.9. ReqXLremeQWs LQcOXde:
oSHratiRQs
in 
construction tKDt can hRLst, lRZHU and horizontally move a

construction tKDt can hRLst, lRZHU and horizontally move a
3. Employers/oSHrDWors must also follow tKH reTXirements susSHndHG lRDd. 
aQG 4884.

aQG 4884.
4. EmSOoyer prRFHGurHV fRU DVsHPEOy/GLsDVsHPbly sKDll

5. TKH employHU shall follRZ the power line safety (up to 
with ovHU 2,000 lbs. of KRistiQJ/lifting cDSacity must kV) rHTuirHPHQts RI 
reqXLremHQts in

C. PowHU line sDIety is rHJulated uQGHU T8
firmness, and all sXSSRrting materiDOs, sXFh DV EORFkLQg, 1612.1 
mats, criEEiQJ, marsh bugJLes

muVW 
be provided by employers. TKH fDOl prRWectiRQ 3. FRU all HQergized power lines (DOl voltaJHs), whHQevereTXipment oSHrations
varies deSHnGLQJ on the type of crDQe being used and tKH

4. Unless the ovHUKHad high 2,000 -voltaJH power linHV are GH

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 31 eQHrgized aQG visibly grRXQGed, tKH RSeration, 
or hanGOing RI tRRls, machinHUy,

5. If eTXiSPeQW WUaYHl s unGHr RU neDU powHU liQHs with QR lRDd,
the

D. ReTXirements for insSHctions and reSDirs of craQHs aQGdHUricks DUe JLven in T8

1. Prior to iQLtial use, DOl eqXLpment thDW has modificatiRQs or
aGGitions

2. InsSHctions RI repaired/adjustHG eqXLSPent are subject 
the reTXirHPHQts in

4. TKH inspHFtiRQs cRQductHG on eDFh sKLft DUe subject 
the reTXirHPHQts in

5. PHUioGLc inspections shall EH coQGuctHG at least four 
a 
6. AQQuDO/ c RPpUHheQVLYe iQVpHFtioQV QHed to be dRQe

6. AQQuDO/ c RPpUHheQVLYe iQVpHFtioQV QHed to be dRQe

E. ReTXirements for the sHOectiRQ and installation of wire 
are givHQ in 
32 CDO/OSHA PRFkHW GXLGH for tKH CRQstruction IQGXVtry JXQe 2019

9. GHQeral inspections must comply with

32 CDO/OSHA PRFkHW GXLGH for tKH CRQstruction IQGXVtry JXQe 2019

7. WKHUe tKHre LV a rHDsonaEOe proEDbLOity RI dDPDJe
or excessive

aQG rHSlacement wire rRSe sKDll be in accordance with HUHFtLRn, 
or hanGOing RI tRRls, machinHUy, appDUatXV, the wire rope manufacturer, the eqXLSPent manufactXUer, 
or materials, or DQy pDUt thereof over the pRZHU liQHs is

8. ETXipmeQW tKDt has beHQ iGOe for 3 mRQths RU more shDOl
be inspHFted by a cHUtificating aJHncy RU qXDlified

F. Do QRt load slings DQd sKDckles beyRQd the rDWed capacities proviGHd by the maQXfacturers. Do not XVe them withRXt
unGHr RU neDU powHU liQHs with QR lRDd,
emSOoyer must HVtablish procHGurHV and criteria, and
fROORw the safety reTXiremHQts of T8

fROORw the safety reTXiremHQts of T8
CCR seFWions 1613.1 
1613.12. Specific reTXirHPents include

1613.12. Specific reTXirHPents include
1. SafHWy dHYLFHV sXFh DV cUDne lHYel LQdicatRU, hRUn, jLE
afIHct the safe RSeratiRQ of the eTXipmeQW or

afIHct the safe RSeratiRQ of the eTXipmeQW or
2. OperDWiRQal aiGV sXFh DV boRP hRLst lLPLWing capacity shall be inspectHG by a cHUtificatiQJ aJHncy. 
to 
1613.2.

1613.2.
rHTXLrHPHQts

.
G. ReTXirements for the operation of cranHV and 
to 
1613.4.

1613.4
1. TKH employHU
WLPHs

WLPHs 
Cranes shall QRt EH operated more tKDn 75 a. FROlow mDQufacturer procedXUes fRU RSeration of theeTXipment includiQJ the XVe of attachmeQWs. Where
bHWweHQ pHUiodic inspections. TKH inspectiRQ shall include
DV

the employer shall stop using 
b. EQVure loads DUe riJJed by a quDOified person RU 
eTXipment aQG a TXalified SHrson shall inspect tKH
a trDLnee unGHr the quDOifiHG pHUson’s direct visXDl

c. If eTXiSPeQW WUaYHl s with a loDG, the employer shDOl
HQVXUe 
be inspHFted by a cHUtificating aJHncy RU qXDlified 
as per T8 CCR

, iQFlXGing bRRms, must be
2. Whenever there is a concern as to safety, the RSerator pHUformed as pHU tKH provisions of GSO. 
shall have the authRUity to stRS and rHIuse to haQGle 
rRSHs 
1614. SelHFtion and installatiRQ of

---

3. Employers must coQWrol wRUk DUHDs DQd protect 
employHHs in the hazardRXs areDV. ReTXirements

a. CommunicDWion amRQg opHUatRUs and signal 
shall be fROlowed DV per 
b. WKHUe any SDUt RI a crane or GHUrick is witKLn tKH

b. WKHUe any SDUt RI a crane or GHUrick is witKLn tKH

c. PrevHQt employHHs from eQWHUing the hazardous 
by providing emSOoyee traLQing, sHWtLQg XS EDrriHUs,

Before an employee goes to a location in the hazard area that is out of view of the operator, the operator must be informed by the employee. 4993.1(a)(3)(A).

4. OSHratioQV shDOl EH conducted DQd tKH job coQWrollHG 
a manner thDW will avRLd exSRsure of HPployHHs to

6. TKH use of eTXipment to KRist emSOoyeHV is prRKibited
excHSt whHUe the employer demRQstrDWes tKDt the

given uQGer 1617.1. OQOy qXDlified pHUsons shDOl be 
employHHs in the hazardRXs areDV. ReTXirements pHUmittHG to give siJQals exceSW for a stop siJQal. SigQDls to 
pHUsRQV
161 6.3 aQG 4993.1.
loDG

H. TKH geQHral requirements for using signDOs dXUing the opHUation

7. Hoisting of persRQnel using crDQes is p
DOl

1. A signal pHUson sKDll be proviGHd in eDFh of the situatioQV

loDG
rDGLXV RI aQRWKHr crane or GHUrick, HPSOoyHUs 2. TKH devices fRU traQVmitting sigQDls shDOl be testHG RQ 
establish a system to coRUdiQDte the oSHratiRQs. bHIore stDUt of opHUations DQd tKH devices/sigQDling shDOl

3. FROlow the aGGitioQDl reqXLremeQWs in DUHDV 
by providing emSOoyee traLQing, sHWtLQg XS EDrriHUs, siJQals.
eWF., DV SHr 4993.1

eWF., DV SHr 4993.1
BHIore DQ employee goes to a location in tKH hazDUd DUHD

---

IllustrDWion 4
Some of the Recommended Hand Signals

| Extend Telescoping Boom—With hands to the front at waist level, thumbs point outward with other fingers crossed. | Hoist—With upper arm extended to the side, forearm and index finger pointing straight up, hand and finger make small circles. | Emergency Stop—With both arms extended horizontally to the side, palms down, arms are swung back and forth. |
| --- | --- | --- |
| Stop—With arm extended to the side, palm down, arm is swung back and forth | Swing—With arm extended horizontally, index finger points in direction that boom is to swing. | Raise Boom—With arm extended horizontally to the side, thumb points up with other fingers closed. |
| Lower Boom—With arm extended horizontally to the side, thumb points down with other fingers closed. | Dog Everything—Hands held together at waist level. | Lower—With arm and index finger pointing down, hand and finger make small circles. |
| Raise the Boom and Lower the Load—With arm extended horizontally to the side and thumb pointing up, fingers open and close while load movement is desired. | Retract Telescoping Boom—With hands to the front at waist level, thumbs point at each other with other fingers closed. | Travel/Tower Travel—With all fingers pointing up, arm is extended horizontally out and back to make a pushing motion in the direction of travel. |

Note: For the complete list of recommended hand signals, see 
GISOs 5001, Plate I.

I. TKH reTXirement s fRU oSHrDWor quDOificatiRQ, trDLQLQJ 
certificDWion, and licensing are given in sections

1. OperDWor qXDlLIicatLRQV/ceUWLILFDWion/LQ

2. Make sXUe tKDt each sigQDl SHrson meets the 
extended KRUizRQWally to the side, SDlms GRZn, DUms DUe swung EDFk DQG IRrWK.
with RWKHU fiQJHUs crRVsed. SRLnting strDLJKW XS, hand DQG fiQJHU mDNe sPDll FLrcles.

3. MDLnteQDnce, inspection, and reSDir persRQnHO are SHrmitted
to opHUDWe the equipment only whHQ all of the reTXiremHQtsof

4. TKH employHU shall provide training to all opHUatRUs, 
pHUsons, sSRtters, comSHtHQt/TXalified persRQs, and

5. ASSlicant mXVt SDss a physical examinDWion, a sXEstance
With arm extended KRUizRQWally to the siGH, tKXPb SRLQWs up with RWKHU finJHUs clRVed.aEXse test, and written aQG
iQGH[ fiQJHU SRiQWs in GLrHFtion thDW ERRP is to swing.

J. T8 CCR sections 1619.1 tKUough

1. SHFtion 1619.1 cRQtains supSOemHQtDO re
erecting, climELQJ, opHUDWing, GLsmantling, aQG DOl othHUoperDWioQV and GHYLFHV XVed in rHJDUd to tower
GRZn, hand and finJHU mDNe smDOl circlHV.
2. TKH suSSlementDO rHTuirements for dHUricks, wKHthHU

3. SHFtion 1619.3 cRQt ains supSOemental reTXirements fRU
floatiQJ cranes/derricks and laQG craQHs/GHrricks RQ

5. TKH suSSlemental rHTuirements fRU deGLcated pile GUivHUs travHO.
gLYHQ LQ

L. A crDQe/derrick used WR JHt dLYHUs
be used for any othHU purpose until all divers are back RQ bRDrd

M. TKHre shDOl EH no sXGden accelHUation or deceleration of mRYiQJ lRDd.

N. Inadvertent coQWDFt with obstructions sKDll be SUevented. The
loDG, ERom, or otKHr parts of the HTuipmHQt shall not contact

Demolition

TKH primDUy hazards associDWed with dem

(1) falls from HOevated work surfaces; (2) exposure to hazardous

A. A DOSH SHrmit is rHTuired fRU demolition of DQy bXLlding 
strXFtXUe more than 36 ft. high. TKH PrRMHFt AdminLVtrator

1. Any structure to collapse.

2. Worker exposXUe to hazDUGRXV chemicals, gDVes,explosives, flammaEOe materials, or similarly

3. WRUNHU exSRsure to DVEHstRV.

Exception: Demolition with explosives and cutting chute holes are not required to progress from top to bottom. 1735(f)(1)

4. WRUNHU exSRsure to OHad.

by wHDkening RI tKH structXUe’s memEHrs. If sXFh hazard 
occXUs, it mXVt EH corrected befRUe workers may contiQXe.
loDG, ERom, or otKHr parts of the HTuipmHQt shall not contact

1. EntrDQcHV WR mulWL- story EXilGLQJs
1735(j)

6. WRUNHU exSRsure to silLFa.

5. Worker exposXUe to cDUcinRJenic (caQFHU
chHPLFaOV, as spHFLIied in GI62s

C. UtLOLWLHs to t he structXUe being GHmolishHG must be turned 
or prRWHFted from damage.

loDG, ERom, or otKHr parts of the HTuipmHQt shall not contact
4. Floor RSenLQJV mXVt hDYe cXUEV DQd stop lRJs to any REstrXFtion in a way

5. Wall opeQLnJV must be gXDrded exceSW on the grRXnd 
aQG tKH floRU being demolisKHd.

oOLtiRQ are: 6. WDOkways QRW OHVs than 20 LQcKHV
(1) falls from HOevated work surfaces; (2) exposure to hazardous

(1) falls from HOevated work surfaces; (2) exposure to hazardous
7. T o prevent GXst air contaminDQts; (3) EHiQJ struck by falling RU collapsing frRP ULVLQJ, dHPolLWiRQ dHErLV mXVt be 
wetted

8. Whenever waste matHUial is GUoSSed to any SRint lyingoXWsiGH tKH exteriRU walls of the EXilding, enclosed chutes
RU 
strXFtXUe more than 36 ft. high. TKH PrRMHFt AdminLVtrator
shall hROd a Project PHUmit aQG all otKHr HPployHUs GLrectly

9. ChXWes or chute sectiRQs tKDt are at DQ anJOe of more wKHWKHr 
caXVe: 45° from the hRUizoQWDO must be entirely HQclosed except for RSeQLQJs eTXiSSed with closXUes DW or aERut flRRr 
Worker exposXUe to hazDUGRXV chemicals, gDVes,explosives, flammaEOe materials, or similarly GDQJHURXV

Worker exposXUe to hazDUGRXV chemicals, gDVes,explosives, flammaEOe materials, or similarly 10. WKHQ cKXtHV are XVHG to loDG trXFks, they mXVt be fully GDQJHURXV eQFlosHG. GDWHV must be iQVtallHG in eDFh chute at RU 
VXbsWDnFHs. 1735 (b
1735 (b)

11. An y cKXte opeQLng into which employHHs GXmp debris 
-causing) hDQd must be SUotectHG by a gXDrGUail.
chHPLFaOV, as spHFLIied in GI62s Article 110 Regulated 
12. When deEUis is drRSped throXJh holes in a floRU witKRut

sidHZDOk sKHd RU a cDQRSy. E. Crane GHmolition work is guiGHd by these reJXlations:

chHPLFaOV, as spHFLIied in GI62s Article 110 Regulated 
12. When deEUis is drRSped throXJh holes in a floRU witKRut CarcinRJHQs. 5203
use RI cKXtHV, tKH DUea oQWo which tKH mDWeriDO LV drRSped
off 
or prRWHFted from damage. 1735 (a)
EH SURWHFted by a 
sidHZDOk sKHd RU a cDQRSy.

2. TKH swiQJ of the ERom shRXld be limitHG to 30° left orchute holes are
4941
ds crHDted

3. TKH wrecking EDll must EH attachHG with a swivHO ds crHDted
CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 39 connHFtion.

4. TKH load liQH and bDOl must be insSHcted at least

5. OXWriJJers are rHTuirHG wKHn using 
swing

Note: See crane standards in the Cranes section of this guide; Group 13 in the GISOs.

Dust, Fumes, Mists, Vapors, 
and Gases

Oxygen-deficient aWPRVSheres or harPIul duVWs, fuPHs, miVWV, 
vapors, or JDses in cRQcHQtrations sufficiHQt to preseQW a hazard

A. WKHQHYer the abRYe coQWroOV are nRW prDFtLFDO RU fail to
achieve fXOl compliDQce, respiratory SURWHFtion must EH

B. VentilDWion mXVt cRPply with ArtLFle 4 in the GIS2V if LW is XVed

C. Common sRXrces of the aERve KDzards may

1. EQJine exhaXVt emissiRQ (carbon moQRxide,

3. CoQFrete and rock cutting (asEHstos, silica,

11. HarmIXl dust, IXPHs, PLVWs, YDpors, and gaVHs 
other sRXrces.

4. FXHl stRUDJe tDQks (harmfXO

8. WHOGing (IXPHs).

9. PDLnting DQd spraying (sROvent, vDSors,

Electrical
twLFe

5. LHDd aEDtemeQW (leDG SDrticles, lead

4941 ( c)
EDFh yHDr a large number RI emSOoyees are injured or killed 
a WUuFN FUane WR bHFaXVe they come into contact with eQHrgized electrical
bDOl. 4941 (d)
Note: See crane standards in the Cranes section of this 
guide; Group 13 in the GISOs.

A. *HQHUDO rHTXLUHPHQWV IRU pURWHFWLRQ

1. The employer must:

if any SHrson, PDFKLQH or tRRO
wLWK WKe FLUFXLW iQWR cRQWDFW
vapors, or JDses in cRQcHQtrations sufficiHQt to preseQW a hazard

vapors, or JDses in cRQcHQtrations sufficiHQt to preseQW a hazard 
b. $GYLVe to HPployeHV mXVt EH HPSOR\HHV of the 
SURWHFWLYH PHDVures.

DUNLQJV c. 3URYLGH RU wDUQLQJ OHJLEOH m VLJQV to iQGLFDWH
pUHVHQFHRI eQHUJL]HG HOHFWULFDO
achieve fXOl compliDQce, respiratory SURWHFtion must EH

achieve fXOl compliDQce, respiratory SURWHFtion must EH 
DFcoUG aQFe with
 rHFRJQL]HG hin D]DUG exists.

XODWLQJHTXLSPHQW 3. :KHQ is SURWHFWLYHLQV XVed, it
coQWrol mHWhod. 6DIHW\ 1528 (c)
EOHFWULFDO wOrders. LWK WKe
iQFlXGe:

iQFlXGe:
4. %DUULFDGHV VKDOO be uVHG in OLHu 
12x, 
polycyclLF DURPDWLF hyGURFarbRQs, DQd others).

lRZ-vol WDJH V\VWHPV (<= 600

GXst). 1. 2QO\ qXDOLILHG pHUVRQV

cRPpRXnGV).

DQd wLULQJ mXVW be SURWHFWHG
eWF.). PHFKDQLFDO GDPDJe

GXLGH IRU Cal/OSHA WKH CRQVWUXFWLRQ,QGXVWU\ PRFNHW |

---

b. IQVtDOl barrLHrs to prHYHQt HPpORyeHV nRW working on
the eTXipment from cRQtactiQJ exSRsHG live SDrts whHQ

c. ProtectiRQ frRP flDPHV and elHFtrLF DUcs 
coQVtrXFtion,

6. MinLPXP DSprRDch dLVtaQFe.

5. MDNiQJ coQQHFtLRQV.

7. Fall ProWHFWion.

C. GHQeral reTXiremHQts for KLgh vROtage systems

1. VROtaJH determination.

2. MinLPXP DSprRDch dLVtaQFHV.

a. ArtLFle 36 AppeQGix A - w or
pDUts

3. TRRls and protective HTuipmHQt.

a. ArtLFle 36 AppeQGix C –

4. MechaQLcal HTuipmHQt.

5. ProtectiRQ frRP flDPHV and elHFtrLF DUcs 
construction, RSeration, and maintenDQce of electric power

9. Grounding fRU the protection of employHHs

11. TKH discRQnHFtion DQd discharging of cDSacitors
the eTXipment from cRQtactiQJ exSRsHG live SDrts whHQ

the eTXipment from cRQtactiQJ exSRsHG live SDrts whHQ
12. EQVure that employHHs do not oSHn the secondary of a
there is tHPSRrary removal of JXards. 
curreQW transformer while tKH
dXUing
oSHration, DQd maintHQaQFe of electric
power JHneration, control, trDQsformDWion,

7. HazarGRXV enHUgy control procHGXUes

a. ArtLFle 36 AppeQGix D – prRWHFtLRn fURm flDPHV and

13. 6HULHs stUHHW OLJhtLQg wRUN

14. Work on RU in SUoximity to overhHDd linHV.

15. Work on RU in SUoximity to undHUgrouQG cDElHV,condXFtors

16. Work on RU in SUoximity to conGXctors and HTuipmentloFDWHd in VWaWLons or VZiWFKyards.

17. Work in power geQHrDWion SODQts 
(>600 V). 2940

(>600 V). 2940
18. Access and workspace rHTuirements.

19. Live line tools. AppHQdix B

20. Protection from KDzardRXs differences in electrical
kiQJ on exposed eQHrgized
pRWentiDO. AppHQdix E

21. LiQH clHDrance (tree trimming) opHUations.

D. MaLQ seUYLFe eTXiSPeQW

WKHQHYer the elHFtrLF XWilLWy prRYidHV

dXUing 1. CoQVist of DQ accHStable sHUvice pole.
construction, RSeration, and maintenDQce of electric power

construction, RSeration, and maintenDQce of electric power
2. Be suitDEly grRXnGHd. gHQeration, control, transformDWion,

3. ProviGH suitDEle ovHUcurrent protection.

1. Each rHFeSWDFle mXVt hDYe a JUouQGing coQWDFt

3. Skirted attachmHQt plXJs must be usHG on all HTuipmHQt
. 2940.15 oSHratiQJ at more tKDn 300

iHV, sKRSV, sXEstatioQV and in the 
fLHOG, and on eOHctrLF traQVmLVsLRn aQG dLVtribXWiRQ lLQHV and

F. Grounding

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 43 is connected to an equipment-grounding conductor. 3. Before equipment is used after an incident that

**2510.7** (a) may have caused damage.
2. Temporary wiring must be grounded. **2405.2** (g4.) At intervals not to exceed three months.
3. Electrically powered tools and electrical equipment f. The employer shall not make available or permit the with
exposed, non- current-carrying metal parts must use of equipment that has not met the requirements be of grounded. **2395.45** (b) **2405.4** (d).

g. A means of identifying tes *Exception: Double insulated powered tools need not be* ted equipment shall be
provided. *grounded. **2395.45** (b)*

4. The frame of a portable generator and the frame of H. High- voltage power lines (> 600 a V)
vehicle where the generator is located need not be

1. Great care must be taken when working or operating
grounded under certain equipment near overhead high conditions. **2395.6**

- voltage power lines.
5. A system conductor shall be bonded to the generator
2. The required minimum safe distances (clearance) from
frame where the generator is a component of a separately overhead lines energized by 600 V to 50,000 V are: **2946** derived system. **2395.6** ( c)

a. For boom-type equipment in transit, 6 ft.
G. Ground-fault circuit interrupters (GFCIs)
b. For boom-type equipment in operation, 10 ft.
The GFCI device senses ground faults (accidental electrical

c. For people working near overhead lines, 6 paths to ground) in circuits and immediately cuts off allelectrical power in that circuit. ft.
*Note: See **2946** for minimum required clearances from*

1. GFCIs are required on receptacles that are not connected *voltages greater than 50,000 V.*
to the site’s permanent wiring and that have a rating of

3. Amusement rides or attractions shall not be located under
15 or 20 amps, 120V, or within 15 ft. (4.57 m) horizontally of conductors operating AC, single phase. **2405.4** (c)

2. The assured equipment grounding conductor program(AEGC program) is an approved alternative to the GFCI in excess of 600 volts. **2946(b**)( **2)**
4. The following activities are prohibited unless overhead
requirement if the following program elements are included: **2405.4** (d) power lines have been de-energized and visibly grounded:

a. Work over high-voltage lines. **2946(b**)(1)
a. A description of the program must be written.
b. Work within required clearances. **2946** (b)(2)
b. The employer shall designate one or more qualified
persons to implement the program. *Note: When work is to be performed within minimum required clearances, the operator of the high-voltage*

c. Daily visual inspection of included equipment must be
*line must be notified by person or persons responsible for the work before proceeding with any work, which* *would impair the aforesaid clearance. **2948*** conducted.

d. The following tests shall be performed:
1. All equipment- grounding conductors shall I. High-be voltage warning signs. **2947**
tested for continuity and shall be electrically continuous High .

- voltage warning signs must be posted in plain view of
equipment operators.

2. All plugs and receptacles must be tested forproper attachment to the equipment
J. Lock- out procedures
grounding conductor. Lock t procedures must be followed during the cleaning,-ou repairing, servicing, or adjusting of machinery. GISO , ESO

e. The tests shall be performed as follows:
**2320.4** (a)( **2)**
1. Before the first use of newly acquired
K. Provide medical services and first aid as required in equipment.
General

2. Before equipment is returned to service. Industry Safety Orders, s ection 3400. In addition, CPR and
**44 Cal/OSHA Pocket Guide for the Construction Industry June 2019** Cal/OSHA Pocket Guide for the Construction Industry | June 2019 45

---

First Aid traiQHd persRQnHO also must be available as pHU
2320.10

Elevators, Lifts, and Hoists

A. An elevator is reqXLred for structures or builGLQJs 60 ft. or

B. An elevator is reqXLred at demolition sites of seven RU

C. Use RI endless-belt- tySH mDQlifts is prohiELted.

D. BHIore use, construction elevators mu
tHVtHG LQ the SUHVeQFe of a D26H rHSreseQWatLYe. A peUPLW

F. A cDSacity plate must EH postHG

G. Elevators must EH RSerated oQOy by comSHtent, authRUized
pHUsons.

H. InVWDllaWLon PXVW FRPSly wiWK

I. LDQdinJV must be providHG at the top flRRr DQd at least 
every tKLUG

J. LDQding doors must be mechaQLcally locked so tKDt they
cannRW be oSHQHd from tKH lDQding siGH. A KRok

M. During insSHction aQG maiQWenDQce, tKH car shall EH

Exception: See 1604.24(a)(3)(D).

Emergency Medical Services
2320.10 (c).

L. Hoistway doRUs shall be DW least 6 1/2 ft. KLJK. SROid

EmHUgeQFy MedLFal SeUYLFHV (EMS) mXVt EH UHadily DYailDEle.

A. A fiUVt aid kLW mXVt be prRYiGHd by HDFh HPployHU RQ all 
siWH
mRUe 
groXQd level or 48 ft. bHORZ groXQd level.
mRUe

mRUe 
B. TrainHG persoQQel in SRssessiRQ of a cXUrent Red Cross First
storiHV or 72 ft. RU mRUe in heiJKt. 1735 (r)
Aid cHUtificate or its HTXLvalent must be immeGLatHOy available
1604.1 (a)

st be insSHcted DQd C. EDFh emSOoyer must HQsure that its HPployHHs have access 
tHVtHG LQ the SUHVeQFe of a D26H rHSreseQWatLYe. A peUPLW to HPerJHQFy medLFDO seUYLFHV at tKH job sLWe
oSHrate is reqXLred.
and 
records of these inspectiRQs must be kHSt. 1604.25
1604.21 (b)

1604.21 (b)
D. cDU. EDFh emSOoyer shall inform DOl of its HPployHHs of tKH
procedXUe to fROlow in case of injury RU illness.
1604.26 (c)

1604.26 (c)
E. EmSOoyer shall hDYe a written SOan to prRYiGH

DW 
1630 (d)

cannRW be oSHQHd from tKH lDQding siGH. A KRok F. ProSHr eTXipmeQW fRU prompt transport of tKH injured RU ill
is prohibited. person to an EMS fDFilLWy or 1604.6
eQFlosXUes must be 8 ft. KLJK on tKH building side or tKH
VF affold side at HDch flRRr lDQding and 8 ft. high RQ all sides 
G. TKH employHUs on tKH project may

G. TKH employHUs on tKH project may 
GRRUs 
accHVs to HPerJHQFy meGLcal seUYLFes fRU the cRPbLQed 
must cRQtain a visiRQ paQHl. (See 1604.6 (a) for VSeFLILc
reqXLremHQts), 1604.6

reqXLremHQts), 1604.6
H. Exposure to EOoRGbRUQH SDthoJHns is coQVidered a job
RSHUDWed 
relatHG hazard fRU construction wRUkers 
at the VOowest VSeed. In- cDU operDWiQJ dHYLFHV shall nRW
function whHQ cDU tRS RSHUation is selected. The car top oSHratiQJ devices shDOl include DQ emergency stop EXtton.

---

Engine Exhaust Emission

Extreme cDUe must be takHQ wKHn eQJine exhDXst can bXLld 
up in work VSaFHs, VXFK as FRnILned VSaFHs, exFDYDWLons,

A. Exhaust SXrifiHU devices aSSroved by DOSH or California
Air RHVRXrces Board (CARB) mXVt EH XVed to maiQWain concentrDWioQV of dDQgerRXs gases RU fumes EHlow

Note: Approval by DOSH will be based on the Maximum Allowable Standards for Internal Combustion Engine Exhaust Emissions as set forth in 5146(c).

B. WKHQ HPployeHV eQWer shDIts (20 ft. or lHVs), cuOYHUts
piSHlinHV wKHre

C. Internal combXVtion enJLQH-driven eTXipment can EH
oSHrated

D. Use RI internal comEXstiRQ enJLQHs in tXQnels is
7070

aQG it must be fROlRZed and kept availaEOe RQ 
inspection by CDO/OSHA staff.

Exception: Diesel engines may be used in underground tunnels if the engines are permitted by DOSH. 7069, 7070, 8470

B. 6WUXctuUDl steHO HUHctLRQ
up in work VSaFHs, VXFK as FRnILned VSaFHs, exFDYDWLons,

Erection and Construction

Every yeDU many workers lose their lives or DUe sHUiRXsly injurHG 
whHQ tKHy fDOl or DUe crushed RU struck because the structure they DUe HUecting sKLfts or cROlaSVes. The followiQJ SOs aGGrHVs WKeVH
A. 7Uuss aQG EHDP rHTuirements

up in work VSaFHs, VXFK as FRnILned VSaFHs, exFDYDWLons, 
1. A lRDd sKDll nRW EH releDVHG frRP LWs hoistiQJ lLQe uQWil 
treQFKHs, and iQViGH EXildiQJs RU HQclosHG strXFturHV.
the sROid web structXUal membHUs are secured at
Air RHVRXrces Board (CARB) mXVt EH XVed to maiQWain concentrDWioQV of dDQgerRXs gases RU fumes EHlow

2. Steel joists RU steHO joist girders shDOl QRt be SOaced 
any suSSort structure until the structXUe is stabilized.

3. When steel jRLst(s) are landHG on a structXUe, tKHy sKDll 
be secXUHG to prevHQt uQLntHQtional GLsplacement priRU 
, or

, or
4. FloRUs must be SODQkHG at every othHU story or 30 
a hazDUGRus atmospKHre exists or is 
whichHYHU LV lHVs. 
UHDsRQDEly expHFted to exLVt, a mHFKDnical vHQtiODtLRn systHP

5. A flRRr must be instDOled within two flRRrs below any 
of beams on which HUection, rivetiQJ, bROting, welding, or
bXLldings or eQFlRVHG sWUu ctXUHV

6. FDOl protection is reTXired whHQ workHUs DUe cRQnectiQJ dRHs nRW resXOt in exposure to GDngeroXV gases or fumes as per
bHDms whHUe the fDOl GLstDQce is greater thDQ two 
prohibited.

Exception: Diesel engines may be used in underground tunnels
if the engines are permitted

7. During work other tKDn coQQecting oSHrations, fall protection is rHTuired wKHre the fall distance is

8. BHIore any steel HUHFtion beJLns, the coQWrolling contrDFtor mXVt SURYide the steHO HUHFtRU writtHQ nRWLILFatioQV relDWed
whHQ tKHy fDOl or DUe crushed RU struck because the structure they DUe HUecting sKLfts or cROlaSVes. The followiQJ SOs aGGrHVs WKeVH

9. Prior to removal of SODQking RU metal dHFking, allemployHHs must be instructed in the proSHr sHTuHQce 
proJUessivHOy dXUing construction to SUevent buckliQJ or

a. TKH arHD must be in the exclusive coQWrol of stHHl
erection SHrsonnel aQG shDOl be barricaded to 
trusses and EHams more tKDn 25 ft. lRQg. The SOan mXVt EH

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 49 bDUricaGHd or the flRRr oSHning shall be covHUed

d. CRYeUV

1. Be capDEle of safHOy sXSSRrting the JUHDter 
pRXnds or twice the weight of the

3. Be checkHG by a quDOified SHrson SUior to 
shift DQd follRZing stroQJ winGV.

2. HDYe nRW lHVs than 12 incKHs
on 
3. Be checkHG by a quDOified SHrson SUior to

4. Never EH removHG by wDOking forwDUd whHUe 
walkiQJ surface cDQnot be sHHn.

11. PHUmaQHnt Flooring-SkelHWon 6Weel ConstrXFtion in

Note: Persons engaged in steel erection should review and be knowledgeable in all the requirements contained in section 1710.

1. Joists, bHDms, or girGHrs RI floRUs bHOow the flRRr or

Unless the structural integrity is maintained by the design 1710(k):

whHUe wRUk is EHing dRQe, or aERut to be done, must be ZK en 
nRW attenGHd by steHO erection pHUsoQQHO. covHUed with floRUing laid close toJHtKHr.

b. TKHre shall EH QRt EH mRUe thDQ four floors or
48 ft., wKLchever is less, of unfinished bolting
All columns must be DQchRUed by a miQLmum of

12. All columns must be DQchRUed by a miQLmum of 
aQFhRU bROts.

2. EmSOoyeHV sKDll nRW work frRP or walk on strXFturDO
railings and toHEoards RU by covHUs. 1632 (members until tKHy are securely bracHG and supSRrted. b

3. BHIore maQXally raising frDPed walls thDW are 15 ft. RU 
of 400 moUH LQ KHigKW, tHPpRUary rHVtUDiQWs, sXFh DV clHDts on 
pRXnds or twice the weight of the emSOoyeHV,
eTXipment, DQd materials that may be imSRsed on
surroXQding structure. 1635 (c)( 3)

surroXQding structure. 1635 (c)( 3)
4. When iQVtalling wiQGows, wDOl oSHQLnJV sKDll be gXDrded 
eDFh reqXLred by 
shift DQd follRZing stroQJ winGV. 1635 (c)(5)

5. ScDIfolGV XVed DV DQ edge pURtHFtiRQ plDWfoUP mXVt be the 
walkiQJ surface cDQnot be sHHn. 1635 (c)(6) fully SODQked, QRt more tKDn 2
—DO 12T
REMOVE”, in 2 in. hiJK, EODFk ERld letters RQ a

7. EmSOoyeHV peUIoUPiQJ frDPLQg DFtLYLWiHV who are 
Unless the structXUDO integrity is maintDLQHd by the design
1710 (k):

D. Reinforcing stHHl aQG EHtween p RVt
the erection flRRr aQG the uppHUmost pHUmDQent fORRU.

a. 6LWe a or wHOGLQJ aERve the fouQGation or uSSHUmost ccHVs DQd

e. ReTXirements for h oistiQJ aQG 
assHPblLHs.

b. WULWten nRWLIicatLRQV. 
fRXU

g. FDOl protection. 
lHYel

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 51 h. FRUmwork DQd fDOsework.

i. Training RHTuirements.

j. Framed SDQHls DQd cRQcrete fRUms.

k. FDOsework and verticDO sKRring.

Ergonomics in Construction

ErgRQRPics LV WKe stXGy RI improving
and the physical GHmaQGs RI the wRUkplDFe. ErgRQRPics can

TKH construction inGXstry suffHUs from GHbilitating and cRVtly occupDWiRQal iQMXUiHV

A. FDFtRUs thDW can coQWribXWe to

1. AwkwDUd postXUHV

2. FRUceful exertion, including KHavy

B. KQRwlHGge of HUgRQomic priQFLSlHV can EH XVHG
proGXce simSOe cKDQJes in tKH workSOace and wRUk

3. ReSHtitive work

4. VibrDWion frRP tRROV DQd

1. Employers must estab lLVh and LPplHPeQW a proJUDP

dHVignHG to minimize RMIs if mRUe tKDn oQH SHrson is 
diDJnosed with RMIs as

7. Lack RI rHFRYHUy time to DIfHFted body

a. TKH RMIs DUe work

6. THPperature

b. TKH employHHs incurred the RMIs while SHrfRUming a

c. 7Ke RMIs we re rHSorted in the SDst 12

d. A lLFeQVHG SKysLFiDQ oEMHFtLYely iGHQWifLHd 
tKH woUNer

2.EHWweHQ The pURgrDP mXVt iQFlXGe tKH tKH woUNer 
and the physical GHmaQGs RI the wRUkplDFe. ErgRQRPics can

and the physical GHmaQGs RI the wRUkplDFe. ErgRQRPics can 
a. A work site evDOXDtion

b. CoQWrol of exposurHV tKDt caused the

c. Training of employees., priPDrily to workers’ baFNV, neFNV, 
shoulGHrs, hDQds, and DUms. TKHse typHV of injuries or traumas are commonly cDOled repetitive mRWion injuries (RMIs) DQd

shoulGHrs, hDQds, and DUms. TKHse typHV of injuries or traumas are commonly cDOled repetitive mRWion injuries (RMIs) DQd
C. SRPe ways to HOimiQDte or redXFe

1. ProSHr liftiQJ and materiDO

2. Use RI HTuipmHQt to reGXce load and

4. Use RI HUgRQomically desiJQHG

5. Use RI SHrsonDO protective

6. ASSropriatHOy timed rHVt

D. Employer shoXOd regXOarly scrutinize the 300 LRJ to see 
whHWKHr multiple cases of

WR
proGXce simSOe cKDQJes in tKH workSOace and wRUk 1. BHIore oSHning an excDYatLRn,
ZKich in turn can DYoid iQMury, LPprRYe prRGXFtLYLWy, and mDNe

Excavation, Trenches, and 
Earthwork
SDUts

a. 0Xst idenWLfy VXbVXrIDFH inVWallaWLon
excavatiRQ and ensXUe they are markHG.

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 53 regioQDl nRWificatiRQ centHUs DQd all sXEsurface 
installations RZnHUs wKR are not members of the

Exception: Emergency repair work to subsurface facilities done in response to an emergency, as defined in Government Code section 4216(d).

e. OQOy qXDlified persRQs (persRQs tKDt mHHt trDL
cRPpHWHQcy reTXirHPeQWs) can peUIRUm suEVuUIDFe

c. MXVt UHceLYe a SRsitLYe rHVSRQVe frRP all

d. Must meHW with ownHUs/opHUDWors of high SUio
as

f. All expRVed employHHs must be trDLned in excavatornoWLILFDWLon/exFDYDtion

g. OEWain a pHUmit from DOSH if wRUkers are rHTuirHG to
eQWer

2. WKLOH excDYDWiQJ, the exDFt lRFDWioQV of the unGHrgrRXnd
utilities must be determiQHd by safe DQd acceptaEOe mHDns.

3. ExFDYDWRrs must imPHdiaWHly noWLfy the VXbVXrIDFH 
installation owner/oSHrDWRU of DQy damage di

2. A cRPpHWeQW peUVRQ mXVt be on site to do tKH

as QHeGHd tKURXgKRut the shift, and GDily for SRtential 
installations RZnHUs wKR are not members of the 
noWLILFDWLon FHnWHrs.

4. WKLOH the excDYDWion LV open, tKH uQGergrRXnd XWilLWiHV
mXVt EH prRWHFtHG, supSRrted, RU UHPRYed DV nHFHVsary.

B. When employees are in an excavation, the following
reqXLremHQts DSply:

b. Take SURPSW coUUHFtLYe Exception: Emergency repair work to subsurface DFtion or rHPRYe HPpORyeHV

3. The cRPpHWeQW peUVRQ mXVt be able to dHPoQVtrDWe 
knRZn 
owners/operaWRrs of VXbVXrIDFH iQVtallatLRQV.

iQVtallatLRQV.
a. TKH ability to recogQLze all possiEOe hazDUGV associatHG
rity (VXFK with excavation work and to test fRU hazardoXV
pipHOines, QDtXUal gas/SHtrROHXm
piSHlinHV, HOectricDO liQHs greater than 60,000 volts,

piSHlinHV, HOectricDO liQHs greater than 60,000 volts, 
b. KQRwlHGge of the cXUrent safety

c. TKH ability to DQalyze and classify
ning and

cRPpHWHQcy reTXirHPeQWs) can peUIRUm suEVuUIDFe d. KQRwlHGge of the design aQG XVe of installation lRFatiQJ

e. The aXWKRrity aQG DEilLWy to tDNe pURPSW DFtLYitiHV.

C. RequirHPHQts fRU SURWHFtLYe systems include the
excavatiRQ tKDt LV 5 ft. dHHp or dHHper.

excavatiRQ tKDt LV 5 ft. dHHp or dHHper.
1. ProtectLYe systHP dHVign mXVt EH EDVed on soilclDVsifLFDWiRQ: 6WabOH rRFk, 
utilities must be determiQHd by safe DQd acceptaEOe mHDns.
1541 (b)( 3)

1541 (b)( 3)
2. SRLl classification is reTXirHG as follows XQless 
installation owner/oSHrDWRU of DQy damage di

installation owner/oSHrDWRU of DQy damage di scRYHUed 
a. ClassificatLRn must tDNe iQWo DFcouQW bRWh sLWe aQGeQYLUoQPeQWal conGLtLRQV. 
dXUing RU cDXsHG by excavDWing DFtivities. If the GDmage RUescDSiQJ materiDO eQGanJHrs life or propHUty, immediDWHOy

b. Soil must be clDVsLIiHG by a cRPpHWHQt peUVon DV

mXVt EH prRWHFtHG, supSRrted, RU UHPRYed DV nHFHVsary. c. ClassificDWion must be EDsHG on the rHVults of at 
1541 (b)( 4) oQH visXDl aQG at least oQH manXDl aQDlysis.

---

Cal/OSHA Pocket Guide for the Construction Industry June 2019

Table 1

four horizontal or steeper. excavation the layers dipping into the Soil profile is layered with Soil is submerged or disturbed. Soil has been previously Soil is subject to vibration. Soil is fissured. Soil is cemented (caliche, submerged rock. Soil is fractured/unstable Soil is fractured/unstable **Condition**

| **Site Conditions That Affect Rock/Soil** on a slope of dry rock. hardpan, etc.) freely seeping through the TypeDowngrade from TypeDowngrade from Type B. Downgrade from Type A to Type B. Downgrade from Type A to Downgrade to Type C. **Requirement**

water is

C. C.
sides of the**Slope Stability** Downgrade from Type A to

Type Type Downgrade to Type B.

Classify as Type A. B to A to excavation. **Start Here**Illustration 5 Is soil submerged or is water freely seeping **No** Are at least 50% of the Type B. grains (by mass) through the side of the excavation? large enough to be seen with the naked eye? Cal/OSHA Pocket Gui **Y es Yes No**

**Type C** Are at least 50% of **Yes** the visible grains (by Is the soil cohesive? Does the soil exhibit: de mass) larger than / " **This is a clay** Medium or greater plasticity? Downgrade from Medium or greater toughness? for t Medium or greater dry strength? he **Yes No** Estimate the unconfined Slow reaction during dilatancy test? Constructio compressive strength. **This is a gravel This is a sand** **No** n Are grains angular? ≤ 0. 0.5 – 1.5 tsf ≥ 1.5 ts Industry | J **This is a silt** **Yes No**

une Type **Type B Type B Type A Type B** **Type C Type C Type C** But check Table 1 But check Table 1 Type But check Table 1 But check Table 1 Downgrade from

C. A to
Type

Type

C. B to

---

3. StanGDrd shRUing, sloping, and EHncKLng must be used

4. Protective systems for excavations dHHpHU tKDn 20 ft.

5. AGGitioQDl braciQJ must be used wKHn vibration 
surcharge loaGV are a hazDUd.

6. ExcDYDWioQV mXVt be iQVSHcted DV QHeded DIter

7. Employees must EH protected from fDOling materiDOs
scaling, instDOlation of SUotective barriers, RU other

8. Uprights sKDll extHQd to the top of the trHQch DQd its 
eQG not more than 2 feet from tKH bottRP of the trench.

12. SKRred, EUaced, or XQdHUSLnQHd structures must beinspected
13. Walkways or briGJes with stDQdDUd gXDrdrails must be

9. Employees must EH protected from excavDWHG or 
material by keHSiQJ such matHUial 2 ft. from the excavation

10. LDGdHUs RU other safe access mXVt be provided witKLn 25

11. ExcavatiRQ bHQeath the level of DGjacent foundations,retaining walls, RU other structXUes is proKLbited

13. Walkways or briGJes with stDQdDUd gXDrdrails must be
installed whHQ employees RU eqXLpment are reTXired RU

---

| Benching & Sloping For Excavations Made in Type "C" Soil

Illustration 8

D. Safety orders pertaining to shafts and wells include the following:
**Benching & Sloping For Excavations Made in Type "B" Soil** |1. All shafts and wells more than 5 ft. deep into which workers are required to enter must be retained with lagging, spiling, or casing. 1542(a)(1)

2. Tests or procedures shall be performed before entry into exploration shafts to ensure the absence of dangerous air
Illustration 7contamination or oxygen deficiency. 1542(c)(3), 5158

**60 Cal/OSHA Pocket Guide for the Construction Industry | June 2019** Cal/OSHA Pocket Guide for the Construction Industry | June 2019 61

---

3. An employHH enteriQJ a EHll- bRWtom pier hROe RU other  2.
dHHp or coQIinHG

4. SKDfts in other thDQ KDrd, compact sRLl shDOl 
completely laggHG and braced.

5. HeDG protection is reTXired for workers wKR eQWHU a 
or shaIW.

6. SKDfts more tKDn 20 ft. GHHS are subject to the
8403

7. PrRYide mHFhanLFDO exKDXVt veQWilDWLRn systHP aQG
forced DLr blRZHU or both fRU shafts 20 ft. RU less

Explosion Hazards

At tLPHV, emSOoyHHs may be exposed to explosiRQ hazDUds 
witKRut their knRZleGJe. In DGGLtion to sXEstances (such as

1. ComEXstibOH GXst coQFeQWrDWioQV mXVt be coQWrROled

3. CleaQLng with compressed air DQd blowing combustibledXVt may be dRQe oQOy when othHU methods

2. AccumXODWed DQd sHWtled combustible dusts must

- bRWtom pier hROe RU other  2. No sRXrce of iJQition is permitted indRRrs or oXWdoors
-fRRtLQg excDYDWiRQ sKDll wHDr a whHUe vapRU or JDs cRQcHQtrations may reasonably 
that has a lifHOine attenGHd by DQother employHH.

3. Employers neHG to be DZare tKDt most flammDEle 
be 
15 42 (c)(1)
well

well 
76Os.

forced DLr blRZHU or both fRU shafts 20 ft. RU less Fall Pro
employees enter DQd where KDzardRXs atmosphHUeexists RU reasonDEly expected to exist due to intHUnDO

T8 CCR iQFluGHs fDOl prRWHFtion stanGDrds in variRXs sHFtioQV RI the

A. TKH factors affecting the level of hazDUd inclXGe tKH

2. Level of KDzDUd DZarHQess and skill of the emSOoyHH
witKRut their knRZleGJe. In DGGLtion to sXEstances (such as

1. Fall hHLght

3. PhysicDO work enviroQPent (e.g., conditions affecting dynamite) that are desigQHd specifically fRU the SXrpose of creating explosiRQs, thHUe are sXEstaQFes thDW will cause an 
stDEility of the emSOoyee on the work

4. Duration of exSRsure to the fall

Note: Because factors 2, 3, and 4 listed above
DW 
or below 25% of the lowHU explosive limit (LEL) XQless
all igQLtion sRXrces are eliminated

1. GXDrdrDLls are requirHG to gXDrd the oSHn sides of all wor
suUIDFHV tKDt are 7 1/2 ft. RU highHU RU workers mXVt be
prevent flammDEle vapRU or JDs cRQcHQtrations 
excHHding 25% of tKH

2^{n}\times4^{n} connHFtors, DQd a bRGy bHOt RU hDUness. It may iQFlude 
lanyards, lifelines, and rRSe JUaEV desiJQed for that pXUpRVe.

3. A persRQDO fDOl DUrest (PFA) system is used to stRS an 
employHH GXring a fDOl from a wRUking level and to keHS

a. It must limit WKe maxiPXm arr

b. It mXVt EH rLJged s o tKDt an employee cDQ neitKHr free
fall more tKDn 6 ft. QRr contact any lower levHO,

c. AQFhRUDJe points must be aEOe to supSRrt 5,000 lbs. 
employee DWtached or:

1. MXVt EH dHVignHG, iQVtallHG, aQG XVHG DV
of a FRmpleWH PFA syVWem wiWK a VDfety IDcWRr of two; and

2. UnGHr the supHUvision RI a qualified

d. TKH PFA system lifeliQH must meet the follRZing
reqXLremHQts:

1. It mXVt be aEOe to suSSRUt 5,000

4. A horizoQWDO lifeline system must EH GHsigQHd, 
installed, and used uQGer the supervisiRQ of aqXDlified pHUson DQd maintai

posLWiRQing dHYLFHV sKDll lLPit the maximXP arrHVting foUFe 
lanyards, lifelines, and rRSe JUaEV desiJQed for that pXUpRVe.

Exception: During the construction of elevator shafts, two employees may be attached to a lifeline that is able to support 10,000 lbs.

5. SafHWy nHWs may be XVed in plDFe RI all RWhHU fall 
employHH GXring a fDOl from a wRUking level and to keHS 
or her from hittiQJ a lRZHU level RU

3. TKH lRZHU eQG of the vHUtical lifHOine must extHQd 
witKLn 4 ft. from the grouQG.

or her from hittiQJ a lRZHU level RU 
C. A PFP system cRPpliDQt ZLth s
gXDrdrDLl

1. A fDOl distance of mRUe tKDn 6 ft. whHQ placing RU tying 
rHLQfRUciQJ stHHO
an

lEV.
fall more tKDn 6 ft. QRr contact any lower levHO,
whHUe SUacticable, the ancKRr HQd of the lanyard shDOl besecXUed DW a levHO not lRZHU thDQ the employee’s wDLst.

2. A fall dLVtaQFe of 7 1/2 ft. RU JUeDWer during

a. WRUk from the pHUimeter of a structure, through SHU 
ways aQG opeQLngs.

b. WRUk SDrt anywhere RQ roofs with slopes JUHDter than
of a FRmpleWH PFA syVWem wiWK a VDfety IDcWRr of two; and 1670

c. Work frRP tKUXVt- RXts RU sLPiODr
pHUson.
1669(a)

e. WRUk from slRSes stHHpHU thDQ 40 degrees.

(b3.)(A fall distance of 15 ft. or greater dXUing the 4)

Exception: During the construction of elevator a. WRUk frRP buiOGinJV, EUidgHV, strXFtXUes on 
shafts, two employees may be attached to a

b. IrRQwork othHU thDQ connecting. to 
witKLn 4 ft. from the grouQG. 1504

for employee SUotection DQd not to hoist mDWerials. BodybHOts used LQ conjXQctLRn wLWh fall UHstUDLQt systems
4. An eave KHight RI 20 ft. or JUHDWHU, 
oSHratiRQs (see exceptions in 2a above aQG 6a and 
CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 65

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 65

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5. A fall dLVtaQFe of 30 ft. or JUHDter,

6. Any height during work:

a. On roofs sloped steHSer than 7:12
the pQHumDWic nailer shall EH secured at roof level

b. On roofs, wKLle DQ operator uses a felt
or other eTXipmeQW that reTXires the oSHrator to wDOkbDFkwDUds (see prohiELtions).

c. From boDWswDLn’s chDLrs.

e. From neHGle-beam VFaIIolds.

d. From IOoat scafIRlds.

f. From suspHQded scaffROds.

D. A fall protection plan (FPP) must be imSOHPented when a
fall protection (FP) system is reTXired EXt canQRt be

The fall protection plan must: 1671.1(a)(1)

2. Be devHORSed for a sSHcific site or devHOoSHd 
essHQtially identicDO

3. Be uSGatHG by the

4. DocXPeQW why a coQYHQtLRnal FP systHP caQQRW EH

Note: An up-to-date copy of the fall protection plan must be at the job site.

1. A cRQtrol line or its eTXivalent must contrRO access to

7. IGHQWify HPSOoyHHV allowed in the cRQWrROled DFcHVs zRQe (

5. Identify tKH competHQt pHUson to implemeQW aQG supHUvise the

66 CDO/OSHA PRFkHW GXLGH for tKH CRQstruction IQGXVtry | June 2019

whHQ iroQZorkers b. Be flagJHd or mDUkHG at QRt more than 6 ft. DUe 
connHFting structXUDO beams. 1710 (g)(1)

connHFting structXUDO beams. 1710 (g)(1)
c. Be riJJHG not fewer tKDn 39 in
45

6. Identify tKH controllHG access zRQe for each location wKHrea cRQvHQtioQDl FP system cDQnRW be

tKH air hose fRU d. HDYe a breDNLQg strHQgth RI 200 lEV. (min.). See
the pQHumDWic nailer shall EH secured at roof level
such a maQQer as to SUovide amSOe, but not excessive,

such a maQQer as to SUovide amSOe, but not excessive,
2. Signs must EH postHG to keep oXW XQauthRUized

3. A safHWy mRQitRUing system is reqXLred aQG must include 
-laying mDFhine 
or other eTXipmeQW that reTXires the oSHrator to wDOkbDFkwDUds (see prohiELtions).

a. 0RniWRr WKe VDIHty of oWKer

b. RecogQLze fDOl

c. Warn an emSOoyee whHQ it aSSeDUs that the employHH is
uQDware of a fDOl KDzDUd RU is actiQJ in DQ unsafe
)

d. Stay in sLJKW RI and in cRPmunLFDWiRQ with the

e. HDYe no RWher rHVSRQVibilLWiHV. 
fall protection (FP) system is reTXired EXt canQRt be

bHFaXVe the system crHDtes a Note: Only an employee covered by a fall protection plan

F. FDOl protection fRU production type resideQWial roofing
1731
in

1. FRU Roof Slopes 3:12 tKUoXJh 7:12, tKH followiQJ

fRU EmSOoyeHV sKDll be prRWHFted fURP falling 
oSHrDWions.

b. CatFK PlatIRrms.

c. ScaIIold PlaWIorPV.

Identify tKH controllHG access zRQe for each location wKHrea cRQvHQtioQDl FP system cDQnRW be d. Eave BaUULHUV.

pHUson.
2. FRU Roof SlopHV SteepHU tKDn 7:12, tKH fROlRZing
to-date copy of the fall protection plan must

e. StanGDrd Railings and ToeERards. 
CAZ).

CAZ
f. 5Rof Jack Systems. 1724
pHUson.

---

G. SHFtiRQ 1730 DSSOiHV WR aOO roRIiQJ ZRrk
SUoGXFtion-
1730(f)(6)

Fire Protection and Prevention

The HPpORyer is rHVSRQVible for HVtDElisKLng an HIfectLYe fLUe 
prevention program aQG HQsuring that it is follRZHG througKRut

A. Fire-figKWing HTuipmHQt

1. Freely DFcHVsible DW all tLPHV.

2. Placed in a conspicXRus locatiRQ.

3. WHOl-maiQWaiQHd.

B. A water suSSly thDW is adeTXate to opHUate fire
eTXipment must be made availaEOe as soon as combustiEOe

C. Fire extinguisKHr use must comply with the

2. At lHDst one fire extingXLshHU ratHG not less tKDn 2A 
be SURYided DW eDFh

3. At lHDst one fire extingXLshHU ratHG not less tKDn 2A 
be provided DGjacHQt to tKH stDLrway DW each floRU

When sprinklers are provided, they shall be installed in an approved manner as per the California Fire Code, CCR, Title 24 section 903.3.1933,6170

5. Fire extiQJuisKHrs m ust be kept within 75 ft. of 
protectHG arHD.

Exception: Fire extinguishers must be kept within 50 ft. of wherever more than 5 gal. of flammable or combustible liquid or 5 lbs. of flammable gas is being used. 1922(a)

QRt RQ QHZ
First Aid
rHVidHQWiDO

or JUHDter.
ReJXlatiRQs cRQcHUQLng first aid include the follRZing:

6. Training in tKH use RI fire extingXLshers must be

A. A fiUVt aid kLW mXVt be prRYiGHd by HDFh HPployHU RQ all 
prevention program aQG HQsuring that it is follRZHG througKRut

prevention program aQG HQsuring that it is follRZHG througKRut B. TrainHG persoQQel in SRssessiRQ of a cXUrent Red Cross First
all SKDVHV RI the cRQstrXFtion work. Aid cHUtificate or its HTXLvalent must be immeGLatHOy available

C. EDFh emSOoyer shall inform DOl of its HPployHHs of tKH
procedXUe to fROlow in case of injury RU illness.
(c)

(c)
D. EmHUgeQFy medLFal seUYLFHV, iQFluGLQg a written plan,

E. Exposure to EOoRGbRUQH SDthoJHns is coQVidered a job-figKWing 
eTXipment must be made availaEOe as soon as combustiEOe relatHG hazard fRU construction wRUkers wKR are assignHG
mDWerLDls DFcXPuODte.
following:
mRQtKOy, aQG serviced DQnuDOly. 1922 (a)

must 
be provided DGjacHQt to tKH stDLrway DW each floRU FlaggeUV must be XVed DW ORcatLRQV RQ a coQVtrXFtLRn sLWe 
soon
prRYLGHG 
sq. ft. of floor area or a fractiRQ

Flaggers

sq. ft. of floor area or a fractiRQ
A. FlaJJers must be placed in lRFatiRQs so as to JLve 
the 
1922 (a)

E. TKH employHU shall sHOect the SUoSHr tySH (class) of highvLVibilLWy sDIHWy DSpaUHl for a gLYen RFcupDWiRQal DFtLYLWy bycoQVuOW

---

107-2004, ASSenGLx B RU tKH American Traffic SDIety SHUvices
AssocLDtLRQ (ATSSA).

F. FlaJJers shDOl wear warniQJ garments manXIDFturHG in
accRUdDQce with tKH requirements of ANSI)/ISEA 107

G. During the hRXrs RI darkQHss:

• TKH flaJJer shall be clHDrly visiEOe to aSSrRDcKLng traffic 
aQG be outfitted with reflectorizHG garments maQXfactured

• The rHWrRUeflHFtLYe mDWerLDl shDOl be vLVible DW a mLQLPXPdistaQFe RI 1,000

• During snow RU fog cRQditions, RQly colored vests, jackets
aQG/or shirts with rHWroreflective matHUia

H. FlaJJers must be trDLQHd.

I. Training mXVt be GRcXPeQWed in DFcordaQFe with the
IIP

Flammable DQd combustible liquids iQFlude gasoline, paint 
WKinners, VRlYHnts, eWF.

E. Flammable liqXLGV must not EH usHG:

B. LHDkDJe RU spillage must be disSRsed of SUomptly aQG
1935

A. TKHse liquids mXVt EH kept in closHG contaiQHrs

in a spray ERoth or RXtdoors where there is no ignitiRQ 
1599(f)

F. Flammable liqXLds must be stored and transported in 
accRUdDQce with tKH requirements of ANSI)/ISEA 107 containers.
High Visibility SDIety ASSarel DQd HeDGwear.

High Visibility SDIety ASSarel DQd HeDGwear.

aQG be outfitted with reflectorizHG garments maQXfactured G. A hazard commXQication program is reTXired in accordance with the reqXLremeQWs

Forklifts
ft.

SDIety reJXlDWions concerning the use of fRUklifts DUe as follRZs:
,

A. IndusWUial WUucNV VXFK as IRrNOiIWs VKall be deVLgned,, constructed, and mDLntDLQHd in DFcorGDnce with the aSSlicable
aQG/or shirts with rHWroreflective matHUia l tKDt meHWs the 
ANSI/ISEA aQG the minLPXP GLstaQFe rHTuirHPHQts shallbe

B. The HPpORyer sKDll HVtDElLVh and eQIorce a systHP to 
1599 (g)

D. ElevatiQJ employees reqXLres the following:

1. TKH fRUklift must be eqXLpped with a SOatfRUm not less 
24" x 24" in
when

when 
a. TKH platfRUm must be propHUly secured to the forks RU 
VDIHly.

wKHre 
c. It mXVt KDYe QR spacHV or KRles lDUgHU thDQ 1
no RSen fODPHV RU sRXrces RI ignLWion exist (see spHFLIics in

24^{n}\times24^{n}

VDIHly.
b. TKH platfRUm must be eqXLSSed with 
wKHre

3. TKH opHUator must follow tKH opHUating rules as SHr 
for HOevating employee

---

Note: When guardrails are not possible due to clearance 
limits/nature of the work, personal fall protection is

5. WKHUe boRP type foUNlLIts are XVed to elHYDWe HPpORyeHV,

E. All foUNlLIts mXVt KDYe SDUNing brDNHV.

F. All foUNlLIts mXVt KDYe DQ RSerDEle KRrn.

G. WhHQ WKe RSHUDWRU is expRVHG
3657(d)

J. TKH employHU must post aQG enforce a set of opHUating

H. When SUovided by the inGXstriDO truck mDQufacturer, an 
operDWor rHVtraiQW systHP sXFh DV a seDW beOW sKDll be

1. OQOy trDLQHd aQG authorized GUivHUs may RSerate

2. Stunt driving and KRrseplay are

3. Employees must QRt riGH on tKH

5. The drLYHU mXVt iQVpHFt the vehLFle RQce dXUing a

10. ExtrHPe care mXVt EH tDNen when tiOWing elHYDWHG

8. TKH opHUator must lRZHU the forks, sKXt off tKH enJLne,
aQG set the EUakes (or EOock the wheels) EHfore leavingthe forklift XQattHQded (when tKH operator is RXt

7. ForNV must be FDrried as low as
8. TKH opHUator must lRZHU the forks, sKXt off tKH enJLne,

6. TKH opHUator must loRN in the GLrectiRQ of travHO aQG

11. TKH fRUklift must have opHUaEOe EUakes cDSaEOe RI 
stRSping it wKHn fXOly

K. An employHH must be prRSHUly trained (as cHUtified by 
limits/nature of the work, personal fall protection is 
required. 3657 (b

required. 3657 (b
1. An HYDOuDWion RI the RSerDWor’s peUIRUmDQce mXVt 
pHUsonDO fall restrDLnt or SRsitiRQing devices must be

pHUsonDO fall restrDLnt or SRsitiRQing devices must be 
2. RefresKHr trDLQLQJ in relevaQW topics must be SUovided to 
in adGLtion to tKH above
(b)

(b)
a. TKH opHUator is obsHUvHG operating the vHKicle in 
3661(c) uQVafe

b. TKH opHUator has EHen invROved in an accident or RI falOLQg
REMHFts, the forklift mXVt be HTXLSSed with ovHUKHDG mLVs LQcLGeQW.
protHFtiRQ (cDQRSy).

protHFtiRQ (cDQRSy).
c. TKH opHUator’s evDOXDtion reveals that he or she is 
operDWor rHVtraiQW systHP sXFh DV a seDW beOW sKDll be

operDWor rHVtraiQW systHP sXFh DV a seDW beOW sKDll be 
d. TKH opHUator is assignHG to drive a diffHUHQt tySH of
3650 (t)

e. ChDQges in wRUkplace conGLtions could affect 
operDWion RI tKH
eTXipment wKHre rollover protectiRQ is installed.

L. TKH use, care, and mainteQDnce of slinJV used in lifting
rXOHV 
sXVpeQGed loDGs mXVt mHHt the reTXirHPeQWs RI AUWLFle 101 
that iQFlude the follRZing: 3650(s)
IRrNOifWV.

IRrNOifWV.
M. LRDds mXVt EH so bDODQced, braced, or sHFured as to preventtipping aQG fDOling. Only stable or sDIHOy arraQJed loads shall

IRrNV 
Forms, Falsework, and blocked).
VKift.
must

must 
By GHfiQLtion, concrete forms are consiGHrHG falsework. Falsework, 
nRW move the vehicle uQWil all SHrsons DUe clHDr of tKH vehicl e.
howeYHr, alVR inFOudes VXpport syVWems IRr IRrms,

CRQFrHWe fRUmwork DQd fDOsHZRUk mXVt be GHsigQHd,
a sXSSRUted,
foUNlLIt LV drLYen oQWo the tUXck 1717(a)(1) bed.

2. FDOsework design, detailHG calcXOatioQV, aQG ORaGV.
be signHG DQd apSUoved by an eQJineer (Ca PE) if
safely 
loaGHd.

aQG set the EUakes (or EOock the wheels) EHfore leavingthe forklift XQattHQded (when tKH operator is RXt

aQG set the EUakes (or EOock the wheels) EHfore leavingthe forklift XQattHQded (when tKH operator is RXt 
A. Design RI falsework

---

Note: For other falsework, approval may be provided by a 
manufacturer’s representative or a licensed contractor’s qualified representative. 1717

3. FDOsework plaQV must be avDLlaEOe at tKH

4. MinLPXP GHsLJn loaGV are DV follows:

a. TRWal combined live aQG deDG loDG: 100

b. Live loDG and formwRUk: 20

5. AGGitioQDl loads must be cRQsidHUed in the GHsign.

B. Erection of falsHZRUk

2. Shore clDPSV (metDO) must be installHG in accRUd

C. InVSeFWion

1. BHIore pRXring concrete on falsework reqXLring
aSSrovDO, an eQJiQHer (Ca PE) or the

Note: For other falsework, the inspection and certification may be provided by a manufacturer's representative or a licensed contractor's qualified representative. 1717(c) (2) (B), and (C)

2. A cRSy of the insSHction cHUtification must be availDEle

PHUiphHUy rails are reqXLred as soon as suSSorting members

1. JoLVts (5 1/2 inFK wiGH) at not more thDQ 36 in
may

Guardrails
manufacturer’s representative or a licensed contractor’s qualified representative. 1717

GXDrdrDLls must be installed at the open sides of all work 
jRE sLWe. 1717 (b)( 3) suUIDFHV tKDt are 7 1/2 ft. RU highHU DERYe the grRXnd, flRRr, RU level uQGHUnHDth, RU wRUkers must be protected by otKHr fall 
1717 (a)( 2)
SVf.

Note: The area under formwork is a restricted area and must be posted with perimeter warning signs. 1717(d)(6)(A)

SVf.
A. GXDrdrDLl specifications.

1. Railings shall be constructHG of woRG or in an HTually 
1717 (a) suEVtaQWial manQHr fURP RWhHU mDWHULDls, and shall

a. A wooGHn top rail that is 42 in
FDOsework must be erected RQ a stable, level, comSDctedbDVe aQG suSSortHG by aGHqXDte SDds, plates, or sills.1717 (b)( 4) aQG

b. A mLG-rail sKDll measure at least 1 in
aQG 
aQFe
maQXfactXUHr’s LQstUXctLRQs. 1717 (d)(2)

c. SFUeens, PHVK, interPHdiaWH YHrWLFDl PHPEers, VRlid
dHViJQ pDQels
aSSrovDO, an eQJiQHer (Ca PE) or the HQJLQHHU’s
repreVHnWDWLYH must inVSect IRr and FHrWLfy FRPSlianFH wiWK

repreVHnWDWLYH must inVSect IRr and FHrWLfy FRPSlianFH wiWK
1. ScreHQs aQG mesh shall extend from tKH tRS railto the floor DQd along tKH entire opHQing

2. TKH gap EHtwHHn the intermHGiate

3. OthHU LQteUPediDWe mHPEHrs sXFh DV soOLd 
DW 
(c)(3)

1717 (c)(3)
d. Wood pRVts shall be QRt lHVs thDQ 2 LQ
LQcKHs
chHV o.c.
used as walkways wKLle forms DUe SOaced.

Note: The area under formwork is a restricted area and must
3. Mid-rails, scrHHns, mesh, intermHGiate verticDO memEHrs,
solid pDQHOs, and HTuivDOent memEHrs shall EH caSDble

---

4. TKH top rail RU mid-rDLl on scaffROdiQJ platforms may EH
substitXWed by tKH X

5. TKH enGV of the rails shall nRW overhang tKH terminal
pRVts, excHSt whHUe such ovHUKDng dRHs nRW constitute

6. RailinJV sKDll be so suUIDFed DV to SUHYeQW iQMXUy to an

B. GXDrdrDLl apSOications

1. FloRU aQG roof oSHnings:

a. FORRr, roof, aQG skylight oSHnings in any wRUk

b. TKH covHU must EH able to sXSpRUt 400 lbs. or twice 
weigKW o

d. Employees within 6 ft. of any skylight shDOl be

1. GXDrdrDLls.

2. Skylight VFUeens.

• IQVtDOled aERYe the skylLJht.

- Installed below the skylight. 3212(e)(2)

4. CRYeUV iQVtalled RYer the skyliJKts

less thDQ 3 ft. above the working surface.

6. FDOl protection plan.

3. Elevators: GuDUGUails are reTXirHG for elevatRU shaft-brDFHV (sHH the ScDIfolGV section 
this guide). 1644 oSHninJV tKDt are not enclosed RU do not have cages. (a)(

5. Skylight neWV.

4. FDOsework: Guardrails DUe reqXLred as soon as falsework
pRVts, excHSt whHUe such ovHUKDng dRHs nRW constitute suppRUting memEHrs DUe in place.
projection KDzard.

projection KDzard.
5. Demolition: WDOl opHQings must 
gXDrdrDLls
emSOoyee fURP SXQFturHV or lDFerDWLRns aQG to 
snagJLQJ RI cORtKLng.

snagJLQJ RI cORtKLng. 
6. RoRIing operations: Provisions must be made during
roofing oSHrDWions to prevent workHUs from falling off

7. Skeleton steHO building: A siQJle 3/8
surfDFe 
of
must be JXardHG by railings DQd tRHbRDrds or by
FRYHrs.
the 
f tKH employees, eTXipmeQW, and material, DQd
be secXUHOy fasteQHd.

1-LQch
Hazard Communication Program 
—OPENING —DO 12T REM29E
SURWHFted (HAZCOM)
from falliQJ through the skyliJKt oSHning by any RQe of

from falliQJ through the skyliJKt oSHning by any RQe of
A hazardRXs chemical is any chemicDO 
the follRZing mHWhoGV:
physical KDzard or a hHDlth KDzard, a simSOe asphyxiant, 
3212 (e)( 1).
• Installed bHORZ the skylight. 3212
, including skyliJKts

eQJineHU certifies tKDt the surface will sXVtain all
a. TKH HazDUGRus SXEstances List.

b. TKH Code of FHGeral Regulations (CFR, Part
t. aQG the ERttom of tKH opHQing

t. aQG the ERttom of tKH opHQing 
c. TKUeshROd Limit ValXHs fRU ChemicDO Substances in 
CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 77

---

WRUk EnvLUoQPHQt (ACGIH) lDWHVt

d. ChHPicals identified DQd rHJulated uQGer Title
8, ArtiFOe 107, DuVWV, Fumes, MiVWs, Vapors

e. T22 CCR 12000 (ProSRsitiRQ

4. ProcHGXUes for safe haQGliQJ, use, stRUDJe, GLsposal, 
clHDn

2. LDEels aQG otKHr forms RI warning on containers 
hazardoXV cKHmicals.

3. 5Hadily aFFeVVible

Note: All hazardous liquids capable of physical injury on skin contact must be covered, insulated, or otherwise guarded against inadvertent contact. When the nature of the work makes covering or guarding impracticable, employer must provide personal protective equipment. 3302

5. TUDLQLQg on the hazardous chemicals thDW employees 
or coXOd be exposed to in the

6. TKH methods tKH employer will XVe to inform 
the hazards of non-

7. Clear and reasonDEle wDUQLQJs for exposures to hazardoXV cKHmicals shall be GLsplayed in the workSOace

eGLtion.
D. Employers must make sure thDW:

10. A plan for periRGically (e.g.
the

1. EDFh cRQtaiQHr of hazardoXV cKHmicDOs in the workSOace
8, ArtiFOe 107, DuVWV, Fumes, MiVWs, Vapors DQG
is labHOed, tDJgHG, or marked. InfRUmation cDQ EH 
GDVes, aQG Article 109, HazDUGRus SXEstaQFes DQd
RI

2. TKH labels on incoming contDLners of hazardous chemicals
suEVtaQFHV are nRW rHPRYed or

E. Employers are requirHG to:
DQG

XS to prRWHFt1. HDYe a emSOoyeHV. n SDS for each hazardous chHPical they

2. Use SDSs that are consistHQt with the GloEDlly Note: All hazardous liquids HarmoQLzHG System

3. MDNe the SD6V readLOy DFcHVsLEle GXring eDFh work

F. Employers must provide all rHTuirHG informatiRQ and trDLniQJ
as per 
are

routine tasks DQd tKH hazarGV 
3. ChHPical-spHFifLF iQIoUPDWiRQ associatHG with chemicals cRQtained in uQOaEHled pipes

or coXOd be exposed to in the 1. LDEeling, pictograms, symbols,wRUkplace.

Clear and reasonDEle wDUQLQJs for exposures to hazardoXV cKHmicals shall be GLsplayed in the workSOace 4. LRFation of hazDUGRus using wDUQLng signs DQd labHOs or provided throuJK

5. WKHUe tKH written HAZC20 prRJrDP is

6. Detection RI presence RU release RI hazDUGRXV

7. PPE DQd apSURSriDWe work
the information provided on the warning signs DQd

HeDW illQHss can be oQH or moemployers. re medical conGLtions incluGLng
hHDt 
effectiveQHss RI the program and for XSdDWing
the prRJrDP.
WR 
emSOoyeHV, their rHSrHVeQWDWLYHV, aQG Cal/OSHA.

Heat Illness Prevention-sLWe issXHs
incluGLQJ tKH metKRds used to iQIorm othHU

the information provided on the warning signs DQd 
8. EmergHQcy DQd first aid SURFeGXrHV.
must incluGH all of tKH reTXired texts DV per the

---

To KHlp employers GHvHOop, implemeQW, and moQLtor thHLr heat 
illness SUevention procedures, C

• EGXcDWioQDl resources incluGLng Employer’s TrainingKit (www.dir.ca.gov/DOSH/HeatIllneVVInIR.htPO

• H7oRO (htWS://www.dir.ca.gov/doVK/etools/08

• EmSOoyer’s SDPpOH PrRFedXUHV
( www.dir.ca.gov/dosh

EmSOoyer’s SDPpOH PrRFedXUHV
( www.dir.ca.gov/dosh

• “ProWHFW YourVHlf IUom Heat Illness” 
pXElicatiRQ ( www.GLr.ca.gov/dosh/dosh_SXblicatiRQs/

(www.dir.ca.gov/dosh/dosh_publications/ HeatIllnessEmployeeEngSpan.pdf)

• Can FRYHr larJH pDUts

• Looks lLNe a red clXVter of pLPSOHV or small

• Often on tKH neck, chest, groin, XQder the
breasts, RU in elbRZ

• NaXVea, vomiting, GLzziQHss,

illness SUevention procedures, C• BRGy temperature normal RU sliJKtlyal /26HA KDs pURYLGed a 
nXPber

• FDLQWing
EGXcDWioQDl resources incluGLng Employer’s TrainingKit (www.dir.ca.gov/DOSH/HeatIllneVVInIR.htPO

• ComplLFDWHG by iQIHFtioQV

Heat Cramps

• FHHls uncomfortaEOe, cDQ disrupt sleHS andwork pHUformance

Never give liquids to an unconscious person

Notes:

• PainIXl musFOe VSasms in WKe sWRPDFK,
arms, lHJs, and othHU

• Heavy swHDting, painful muscle cramps,
extreme weDNQHss DQd/or

• UnconsciRXsnHVs

EGXcDWioQDl resources incluGLng Employer’s TrainingKit (www.dir.ca.gov/DOSH/HeatIllneVVInIR.htPO
• PXOse fast aQG

• SXGdHQ d izziness,

• Clammy, SDle, coRO, aQG/RU moLVt
/dosh_SXblicatiRQs/HIP-Note: Heat exhaustion can occur because of high core body VDPSle

/dosh_SXblicatiRQs/HIP-Note: Heat exhaustion can occur because of high core body VDPSleprocedXUHV.SGf)

pXElicatiRQ ( www.GLr.ca.gov/dosh/dosh_SXblicatiRQs/

• 1RHeDWIllQHssEmployeeEngSSDn.pdf sweDWiQJ; the body cDQnot

• MeQWal coQIXVion, delLUiXP, coQYuOVLRQs, Signs and symptoms of heDW illness may inclXGe:

• Hot and dry skin (e.g., red, bluish, or
mottlHG)

• 0XsFOes may twiWFK

• PXOse can be raSLd DQd

• TKUoEEing hHDdache, sKDllow EUHDthiQJ,seizures/fiWV
creDVHV

• UnconsciRXsnHVs aQG

• BRGy temperature may rDQge from 102
104˚F RU higKHr witKLn 10

body pDUts ( PDy
occXU DIter ZRrk or DW nLJKW)
Fainting— General Symptoms:

C. HeDW illQHss prevention plan, DW a miQLmXP, must include:
Heat Exhaustion —General

Heat Exhaustion —General
1. ProcHGXUes for SUoviding sXIficient

2. ProcHGXUes for SUoviding access to fatiJXe

CDO/OSHA PRFkHW GXLde for tKH CRQVtrXFtion IQGXVtry | JXQH 2019 81

---

3. High-heat procedures

4. EmHUgeQFy rHVpoQVe

5. AcclimatizDWion methRGs aQG

D. TKH plan shDOl be in writiQJ in ERth EQJlish aQG the

E. ProcHGXUes for SUoviding sXIficient

1. SXIficient amounts of fresh, pXUe, and suitaEOy

2. ProviGH at least one quart SHr emSOoyee per hRXr for 
eQWire shift.

3. If individXDl water contDLQHrs are SUoviGHd, tKH coQWainHUs
mXVt EH clHDn,

Notes:

8. Remind wRUkers to drink wDWer RIten aQG QRt to wait

1. WKHn RXWGRRU temSHrature is 80˚F RU

Permits for public water systems are granted by the California State Water Resources Control Board (www.waterboards.ca.gov/drinking_water/certlic/ drinkingwater/Permits.shtml)

a. Have sKDde availDEle and SUovide shDGe or 
access to shaGH upRQ

9. PrRYide water at no cRVt to tKH

Licensing of bottled/vended water source is regulated by the California Department of Public Health (www.cdph.ca.gov/pubsforms/Pages/fdbBVWfaq.aspx)

7. Place wDWHU as close as SUDFticable
are working. FRU example, on a mXOti

82 CDO/OSHA PRFkHW GXLGH for tKH CRQstruction IQGXVtry | June 2019

6. During hot weathHU, the watHU must EH cRRlHU than 
amELeQW tHPSHrDWure.

b. It hHOSV to KDve the shade HUected if tKH weDWher is KRt lDQJXDJe 
tKH mDMorLWy RI tKH employees. eQRuJK tKDt the sKDde cDQ KHlp employees to coRO

33952. WKHn RXWGRRU temSHrature exceeGV 80˚F: (c)

a. Have oQH or more DUHDs with shade DW all timHV cool 
pRWable wDWHU shall be available at DOl WLPHs. employees are SUesent. If no RWKHr sKDde is rHDdily DYaiODble, erHFt shDGe strXFturHV LPmeGLately.
tKH

tKH 
b. It is a JRRG idea to sHW up the sKDde in advance
at
and a source of potable water must be

and a source of potable water must be
3. PHUform frequHQt cKHcks of the tempHUDWure at the reaGLly DYaiODble. worNVLWH 
- WHVWHd ZDter 
used.
Notes:

Notes:
4. Place tKH shDGe structXUe as clRVe as SUacticDEle to 
Permits for public water systems are gr

5. SKDde must be eithHU opHQ to the air RU providHG withCalifornia State Water Resources Control Board veQWilDWiRQ RU coROing, and mXVt be HDsy for HPSOoyeHV

6. PeUPit HPSOoyeHV to DFcHVs shaGH DW all

7. ProviGH enoXJh sKDde to accommodate all

Cal ifoUQia HeaOWh and SDIHWy CRGe s
b. w ho chRRse to remain in areas designated for
recovery and rest pHUiods dXUing thHLr mHDl

8. Erect aGGitionDO strXFtures on an as
the

to wKHre emSOoyees
10. Have water avDLlable in the rest area so tKDt
are working. FRU example, on a mXOti-VWory conVWruFWion 
are encoXUaJHd to GUink more
site, SODFe water in a sDIHOy accessible location on every

driQN.
12. MRQitor tKH employHH on cRRl
she is expHUienciQJ any symptoms 
3395 (d)

---

14. EQFoXUDJe tKH employHH on cRRl

G. High-heat procedures:

1. ImplHPHQt hiJK-heat procedures whHQ tKH

2. Train DOl emSOoyeHV to recRJnize the signs DQd symptoms of
hHDt illQHss DQd allow them to cDOl for emergHQcy

3. Train all HPpORyeHV to stay in coQWDFt, obseUYe eDFh

4. OEVerve aQG mRQitRU emSOoyees for DOHUtness and signs 
symptoms of heat illness by implemeQWing oQH or mRUe of

a. SXServisRU or GHsignHH observation of 20 or 
employees

b. MDQdatory buGGy

d. OthHU effHFtLYe mHDQV RI

H. EmergHQcy response procHGures:

c. ReJXlar commuQLcatiRQ with sole employee XVing

EmSOoyeUV are reqXLred to LPplHPeQW HIfHFtLYe HPHUgeQFy

2. Take LPmHGiDWe actiRQ LI any sLJQV or symSWRPs of 
sympWRm of heat illness, initiate first-aid prRFHGXUHV  illness in any employHH is REservHG or
witKRut dHOay.

5. CoQWact employHHs regulDUly.

witKRut dHOay.
3. ImplemeQW emHUgHQcy resSRnse procHGures if the sigQV 
- down rest to remain in symptoms indicDWe sevHUe hHDt
more minXWHV DV neHGed.

6. DesignDWe oQH or more emSOoye

7. RemiQG HPSOoyeHV tKUoXJKRXW

more minXWHV DV neHGed.
4. Do QRt leave the employee exhibiting siJQs or symptoms
of hHDt illness alone RU send 
tHPpHUDWure 
˚F.

˚F.
5. CoQWact emergeQFy meGLcal services aQG, if 
trDQsport emSOoyees to a place whHUe tKHy can be
hHDt illQHss DQd allow them to cDOl for emergHQcy 
VHrYLFHs wKHn

VHrYLFHs wKHn
6. In tKH HYHQt RI an HPerJHQFy, mDNe sure thDW cOHar 
RWKHr, 
aQG precise GLrections to the wRUksite are providHG 
aQG immHGiately rHSort any signs/symptoms of heat
or

or 
7. If yRX KDve mREile crews, proviGH the emerJHncy medicDO prRYider a map RI the 
symptoms of heat illness by implemeQWing oQH or mRUe of
the foll owing:

the foll owing:
I. AcclimatizDWion methRGs aQG prRFedures
feZHr

1. Make sXUe that all employees DUe REsHUved by 
supervisor or GHsigQHe during a heDW

radio

aXWhorizHG to call for emHUgHQcy meGLcal serviFHs.
3. Be extra-vigilant in emSOoyHH
shiIW WR drink waves DQd wKHn QHw employees DUe RQ the

EmSOoyeUV are reqXLred to LPplHPeQW HIfHFtLYe HPHUgeQFy 3. ProviGH training when DQ employee is hirHG. response procedures in the

procedXUHV and to remind employHHs to drink plHQty 
2. Make sXUe that employHHs aQG suSHrvisors water aQG tDNe a cRRl
tUDLQ
EmSOoyeUV are reqXLred to LPplHPeQW HIfHFtLYe HPHUgeQFyresponse procedures in the

may 
1. Training of employees DQd sXServisors in your heat acFOiPDWLzaWLon.
hHDt
procedXUHV and to remind employHHs to drink plHQty

4. PrRYide rHIrHVhHU traLQing DV

or Note: Training that is given close in time to the hotseason is more effective than training given during colder

---

5. Cover JHnHUDO and site/work

• All proceGXrHV in your heat illness
incluGLQJ prRFHGures for proviGLQJ water, shDGe DQd

• TKH different types of KHat illness DQd the common siJQs and s

• ProviGH the traiQLng in a laQJuDJe the employeesuQGerstaQG

• ASSropriate first aid and/RU emergHQcy resSRnse 
the

• MDLntain records RI tKH

K. Have a sXLtable number RI trDLnHG persoQV to reQGer first
Typical first aid methRGs fRU heat exhaustion aQG heat

1. Give first aid fRU heat exKDustion, lay the persRQ GRwn flat in a cool environment, loRVen

2. Give first aid fRU heDW stroke, immediDWely startaJJressive coROing of the persRQ and JHt

2. T iming the hHDYLHst work load for the coolest pDUt RI

1. MoQLtRUing the wHDthHU forecast aKHad of time and
plDQning accordinJOy.
2. T iming the hHDYLHst work load for the coolest pDUt RI

L. Ways to SUeveQW heDW illness also incluGH:

For more iQIRUmatLRn on HeDW IllQHss PrHYHQtLRn the 
prevention SOan,

cool-down rests, high KHat, emHUgHQcy resSRnse,
Heavy Construction Equipment

SDIety reTXiremen ts fRU heavy constrXFtiRQ eqXLpment DUe 
as follows:

ympWRms of heat A. GHQeral reSDirs must nRW be mDGe to SRwered eTXipment LOOQess
uQWil workers are prRWectHG from movHPent of the eTXipment
IRr

IRr
B.typHV BHIore repDLrs are mDGe, hRZ to workers muVW comply with loFN
RI hHDt LOlnHVs, DQG
blRFk

C. WKHUHYer mobile equLSPeQW oSHrDWLRn eQFrRDchHV on a
iQIoUPDWiRQ SURYided in the trDLning

iQIoUPDWiRQ SURYided in the trDLning
D. FlaJJers are rHTuirHG at DOl locations whHUe bDUricaGHs and
warning siJQs cannot coQWrol the movin
aid.
Typical first aid methRGs fRU heat exhaustion aQG heat
VWroNH:

VWroNH:
Give first aid fRU heat exKDustion, lay the persRQ GRwn flat in a cool environment, loRVen tKHir clothing, and 
plHQty of water to dULQk.
Give first aid fRU heDW stroke, immediDWely startaJJressive coROing of the persRQ and JHt thHP to a
hosSLtDO rLJKW DZay. Cooling can include plDFing cRRl

E. JoEVLWe vehLFlHV must be eqXLpped with tKH

1. OSHrable service, emHUgHQcy, and parking
1591

2. TZR oSHrable KHadlights aQG tailligKWs for 
1597
3. Windshield wipHUs DQd dHIoJJing eqXLpment DV

3. Windshield wipHUs DQd dHIoJJing eqXLpment DV
the 
1597

---

7. If an exhDXst rHWrRILW LV iQVtalled RQ a vehLFle, it shaOO

1. TKH fROlowing HTuipmeQW having a brake KRrseSRwHU

a. BXOldozer

b. Front- eQG lRDdHU

c. Motor grDGer

e. TractRU (excHSt side ERom pipe laying)

d. ScraSHr

f. Water wDJon SUime

2. TKH following eTXipmeQW:

a. Rollers and compactors weigKLQJ more

Exceptions: See 1596(a)(2)(B)

c. CUDwler tUDctRU.

7. Exposed scissor SRints on froQW be 
installed aQG mDLntained as pHU 1591 (m). gXDrded.

5. TKH brDNHV on a haXODJe vHKicle must meet the criteriaspHFLIied by tKH C62V.

8. EQJines must EH stRSped during rHIueliQJ. DW 
1597 (j)

3. All vehicles must be HTuippHG with a maQXally operated 
warning device.

1597 (j)
9. LiJKts DUe reqXLred for QLJKt oSHration. 
be

6. The coQWrol dHYLFHV on a hauODge vHKicle mXVt

2. All RWKHr vHKiclHV RSerDWiQJ when rHDr vLVion LV blRFkedmust be HTuippHG with an aXWomatic bDFkup alarm or

be 
10. VHKicles loaGHd by cranHV, shovels, loDGers, aQG similar 
devices must KDve DQ adeTXate cab or cDQopy for 
rDWLQg 
1596 (a)( 1)

1596 (a)( 1)
11. Dust control is rHTuirHG wKHn GXst seriously limits
1590

12. In dusty RSeratiRQs, eqXLpment operators shDOl 
aGHqXDte respiratRUy protection.

13. LRDds RQ veKLcles must EH secXUHG from
1593

14. If an exhDXst rHWrRILW LV iQVtalled, iQVtall DQd maiQWain DV

I. SDIety reTXirements for inGXstriDO trucks and tractors

than 1. PRVting and enf orcing by employers using iQGustrial 
(a)( 2)
Exceptions: See 1596(a)( 2)(B)

Exceptions: See 1596(a)( 2)(B)
2. PrRYiding RSerDWing iQVtrXFtioQV at tKH tLPe of inLWialassignment DQd at least aQQuDOly 
1596 ( a)(2)( A)

3. Using the lRFking dHYLFe where the GXmp ERdy RI a tUXck 
are

Hot Pipes and Hot Surfaces

4. PHUformiQJ reSDir work oQOy whHQ there is QR possibility of
sudGHn mRYHPeQWs RU RSerDWiRQ RI the HTuiSPHQt or LWs
mRUe must be HTuippHG with an DXtomatic EDckup 
that soXQds immediately on backiQJ.
All RWKHr vHKiclHV RSerDWiQJ when rHDr vLVion LV blRFkedmust be HTuippHG with an aXWomatic bDFkup alarm or

• 7 ft. mHDsXUHG verticDOly from flRRr or wRUkiQJ level

• 15 in cKHs 1591mHDsured KRrizoQWall (c)
or fixHG lDGders.

---

Note: This order does not apply to operations where the 
nature of the work or the size of the parts makes guarding or

B. ChHFk for leDNs from pipHOines DQd eQVure 
stRSped befRUe wRUkiQJ near them. TKH enHUgy within the

Housekeeping/Site Cleaning

HoXVekeHSing is a term used to describe the clHDning of tKH 
work site and surroXQding DUHDs of construction SUoject

It is important to remember that work sites subject to specific SOs may have additional housekeeping requirements with which to comply.

A. WRUk surfaces, passaJHways, DQd stairs shall be

B. Groun d areas within 6 ft. of buildings XQdHU construction 
be kept rHDsRQably free RI irregXOarities.

C. Storage areDV and wDOkways on cRQstructiRQ sites shDOl be
kept reasonDEly free of danJHrous dHSressiRQs,

Injury and Illness 
Prevention Program

An Injury and IllnHVs PrevHQtiRQ
all work sites. TKH SURJram is considHUHG effective if it

to their work site. FROlowing is a summary of the regulatory 
nature of the work or the size of the parts makes guarding or reqXLremHQts.
insulating impracticable. 3308

D. 3LOHG o r stDFked mDWerLDl shDOl be plDFed in stDEle stDFks to

E. MDWHUial RQ EDlcoQLHV RU in RWhHU
1549(h)

insulating impracticable. 3308
A. TKH IIPP must be in writing and must include 
the lHDks are
stRSped befRUe wRUkiQJ near them. TKH enHUgy within the

stRSped befRUe wRUkiQJ near them. TKH enHUgy within the
1. The HPpORyer’s assiJQPeQW of rHVSRQsibLOitLHs.
piSLng system must be cRQtrolled to SUevent an

2. A system for HQsuring emSOoyHH compliance with 
work pracWLFHs.

3. A sysWHm for WZo- way commXQication between employers
aQG employees DEout

4. ScKHdulHG LQspHFtLRQV DQd an HYalXDtion systHP 
work site and surroXQding DUHDs of construction SUoject
dHEris. TKH term also refHUs to tKH mDQaJLng and stRUing of materials tKDt are used on the project. Listed below are the gHQeral reTXiremHQts fRU housekeeSLng to which DOl wRUk sites are

dHEris. TKH term also refHUs to tKH mDQaJLng and stRUing of materials tKDt are used on the project. Listed below are the gHQeral reTXiremHQts fRU housekeeSLng to which DOl wRUk sites are
5. An DFciGHnt iQYHVtigDWiRQ SURFHVs.

6. ProcHGXUes for correctiQJ XQsafe DQd unheDOthy
conGLtLRQV.

7. SDIety aQG health training.

8. RecordkeeSLng.

B. 2WKHr II33 UHquLUHmeQWs for constUXctLRn
kHSt

kHSt 
reasonDEly clear of scrap lumber DQd debris. 1. Employers must adopt DQd post a CoGH of Safe Practices 1513 at eDFh (a
shall 
be kept rHDsRQably free RI irregXOarities. 1513

aQG deEUis. 1513(c)
3. SXServisRUs must cRQdXFt tailgate or toolERx safety 
mHHtinJV at least every tHQ workiQJ days; however, 
prHYeQW LW fURP fallLQg, sliSSing, or cROOapsLQg.
HOHYDWHG locDWiRQV on

HOHYDWHG C. ReTXired safety training for emSOoyeHV locDWiRQV on 
RI bXLlGLQJV XQGHU FRnVWruction

a. The rHFRJnLWion RI job sLWe
P) LV reTXired DW

RI bXLlGLQJV XQGHU FRnVWruction
1. New workHUs shDOl EH instructed in safe wRUk practices, sHFured, RU pRVitivHOy EDrricDGed in RUGHr to SUHYeQW tKH job hazards, and safety SUecautions DQd shDOl be

all work sites. TKH SURJram is considHUHG effective if it b. ProcHGXUes for SUotecting
the regulatory rHTuirements of

the regulatory rHTuirements of 
c. First aLG prRFedXUHV LQ the HYeQW RI injury.

---

D. GHQeral safety reTXiremHQts are DV

1. No workHU sKDll be reqXLred RU permitted to wRUk in

2. BHIore startiQJ work, the emSOoyer sKDll sXUvey the

E. SpHFifLF reTXirHPHQts are DV fROlows:

If an employHU is subject to specific sDIety ordHUs, tKH

F. Employees KDve QXmerous rights unGHr the IIP

1. TKH rigKW to wRUk in a safe and KHalthfXO

2. TKH rigKW to inform the emSOoyHU of wRUkplace 
witKRut fear RI

3. TKH rigKW to recHLve training that is reaGLly

G. 7R ensXUe tKH HIfHFtLYHQHVs RI tKH IIPP:

1. SXServisRUs sKRuld be qualified in safety procHGures 
hHOd DFcountaEOe.

Ladders

H. Create your written IIPP using the fROlowing

2. TKH effectiveness of the safHWy SUoJUam sKRuld

an 
Falls are the mRVt cRPmon caXVe RI worker iQMXUy DVsRFiDWed 1511 ( a)
with laGGer XVe. Falls DUe mostly cDXsed by the (1) use RI
jRE sLWe
for KDzards and XVe QHcessDUy sDIHJuarGV to eQVXUe thDW
work is performHG safely.

1. 7Ke IIPP H7ool (www.dir.ca.gov/doVK/eWRols/09
031/iQGex.KWm

If an employHU is subject to specific sDIety ordHUs, tKH
reqXLremHQts of tKHse SOs must EH considered whendHYHOopiQJ the HPSOoyer’s IIP PrRJUDm. TKHse S2V ma

reqXLremHQts of tKHse SOs must EH considered whendHYHOopiQJ the HPSOoyer’s IIP PrRJUDm. TKHse S2V ma
A. GHQeral reTXiremHQts for

1. PRUtable ladGHrs shall FRPSly with T8 CCR

2. Design aQG coQVtruction of portable lDGdHUs shall 
with T8 CCR
P,

P, 
3. FixHG lDGdHUs shall comply with T8 CCR 3203 ( a)
1675
wRUkplace

wRUkplace
4. Wood pDUts of fixed laGGers shDOl meet the reTXiremHQts 
hazDUGV 
reprisal

reprisal
5. ExtHQsion ladGHrs shDOl comSOy with
uQGerstanGDEOe

uQGerstanGDEOe
6. PRUtable metal laGGers sKDll comply with

7. PRUtable wood lDGdHUs shall comply 
DQd

DQd 
8. PRUtable reinforced plastic ladGHrs shall comply
3276
be

be 
9. 6LQJOH± rail laddHUs shall QRt be

B. PRUtable ladGHrs are JHnHUDOly designed for one rHVRXUFes:
to meet tKH reTXiremHQts of the pHUson, tKH task, and the
-
) at Cal/OSHA’s wHEsite is providHG to
hHOp you develop RU improve yoXU IIPP.

| Ladder Type | Maximum Length(Feet) |
| --- | --- |
| Step ladder | 20 |
| Two-section extension ladder(wood) | 60 |
| Two-section extension ladder(metal) | 48 |
| Three-section extension ladder(metal) | 60 |

WRUNplace IQMXUy DQd 
D. Maximum lHQgths of SRrtDEle laGGHUs shall not exceed 
IOOQess 3UHventLRn 3URJram” LV avDLOaEOH oQOLQH at
www.dir.ca.gov/GRsh/doshBSuEOicDWioQV/iipp.pGI

---

Two-sHFtiRQ extension laddHU (UHLQfoUFHG 
3DLQter’s

E. MinLPXP RYHUlap in two-sHFtion portaEOe extensiRQ

| Ladder Size (Feet) |
| --- |
| Up to and including 32 |
| Over 32, up to and including 36 |
| Over 36, up to and including 48 |
| Over 48, up to and including 60 |

| Minimum Overlap(Inches) |
| --- |
| 36 |
| 46 |
| 58 |
| 70 |

)3RUWDEOHODGGHUVVKDOOEHXVHGDFFRUGLQJWRWKHIROORZLQJ

| Duty Rating | Ladder T |
| --- | --- |
| Special Duty | IAA |
| Extra Heavy-Duty | IA |
| Heavy-Duty | I |
| Medium-Duty | II |
| Light-Duty | III |

| Type | Working Load(Pounds) |
| --- | --- |
|  | 375 |
|  | 300 |
|  | 250 |
|  | 225 |
|  | 200 |

G. All SRrtable lDGdeUV XVed in oXWdoRU aGYHUtLViQJ strXFturHV
shall EH DW leDVt

plaVWic) 9. DoXEle- clHDt ladGHrs mXVt QRt excHHd 24 ft. in 72
ladGHr 12 1676
lDGGHr

8. 6LQgle-cleDW ladGHrs must QRt excHHd 30 ft. in
1676(e

2. CleaWV must be made from clHDU,

4. Cleats mXVt be EOockHG or QRtched into the side
1676

Cleat lDGGHr
I. PRUtable LaddHUs
SinJOe ladGHr

1. InsSHction aQG mDLQWenance rHTuirements are
ODGGHUs

shall nRW be less thDQ the followiQJ: a. LDGdHUs shall EH inspectHG by a QXDlifiHG Person for 3276 (e)( 16)(
vLVible dHIHFts

2YHUXSWRDQGLQFOXGLQJ b. LDGdHUs shall EH mDLntDLnHG in JRod conditiRQ at 
2YHUXSWRDQGLQFOXGLQJ
2YHUXSWRDQGLQFOXGLQJ

2YHUXSWRDQGLQFOXGLQJ
c. Metal lDGdHUs shall not be exposed to acid RU alkali
3RUWDEOHODGGHUVVKDOOEHXVHGDFFRUGLQJWRWKHIROORZLQJ materials tKDt are caSDble of corroGLQJ tKH lDGder

d. RemRYe laGGeUV tKDt hDYe dHYHOopHG dHIHFts
broken or PLsVLng sWHps, rungs, FOeats, VDIHty IHet, VLde rails, or otKHr GHfects from sHUvice, aQG tDJ or mark

coQVtrXFted in accRUdaQFe with T8 CCR 
2. ProKLELted uses of SRrtDEle laddHUs are given
rHTXLremHQts:

rHTXLremHQts:
a. LDGdHUs shall QRt be used as a EUace, skid, 
load. pROe, gDQg

- grained b. Do QRt place planks on tKH top cDS. lXPEHr 
must be XQifRUmly spaced 12 in cKHs apDUt vertically.

must be XQifRUmly spaced 12 in cKHs apDUt vertically.
c. Step laGGers shDOl not EH usHG as sinJOe lDGdHUs or in 
1676 (c)
or

or 
3. 7R 
1676safely XVe pRUtaEOe ladGHrs (j)
 UDLOs.

UDLOs.
a. All portaEOe laGGers usHG fRU wiQGow washing shall be
eTXippHG with noQVlip GHvices. MidGOe DQd tRS 
to 20 incKHV.

c. TKH base of laGGers shDOl be placed RQ a secure and RI 
1676 (b) level footing. LadGHrs shall QRt be SODFed on 
lenJWh.

---

d. LDGdHUs shall QRt be used RQ ice, snow, or slippHUy 
surfaces uQOess sliSSDJe is SUevented.

e. The top RI a QRn- seOI- suppRUting
with two rDLls supported HTually, unless a single 
f. Non sHOf- suSSRUting lDGGHUs sKDll, wKHUe SRVsible, be

f. Non sHOf- suSSRUting lDGGHUs sKDll, wKHUe SRVsible, be
usHG
3276(e)(9)

g. TKH laddHU shDOl be so SOaced as to prevent sliSSing, 
it shall be tied, blRFked, KHld, RU otherwise secured to

h. LDGdHUs sKDll QRt be usHG in a horizoQWDO position as
plDWforms, ruQZays, or scDIfROds unless designed

i. When two or more separate ladGHrs DUe used to 
an elevated work area, the ladGHrs shall EH

j. ExtHQd ladGHr side rails to at leDVt 3 ft. DEove tKH

q. Do QRt stDQd and work on the top thrHH rXQgs RI
surfaces uQOess sliSSDJe is SUevented. 3276 siQJle RU extHQsion laddHUs.

l. ExtHQsion ladGHrs shDOl be erHFted so that tKH top 
sHFtLRn is DERYe and rHVting on the ERttRP sHFtion

m. Do QRt place ladGHrs in passDJeways, doRUways,
driveways, or DQy lRFation whHUe they may be GLsplDFed

p. FDFe the lDGder while climbing DQd dHVcending, aQG
mDLntain contact with the ladder at three

laGGer shall be placed r. EmSOoyeHV sKDll not VLt, NQeel, VWHp
with two rDLls supported HTually, unless a single 
attachment is SUoviGHd aQG used.

WKe KRrizRQWal GLstDQce IUom WK
to the fRRW RI the laGGHU is RQe-

s. Do QRt use tKH X-brDFiQJ RQ the 
or a steSODGdHU for climbing uQOess tKH lDGdHU is
it shall be tied, blRFked, KHld, RU otherwise secured to
prHYeQW sliSSing.

t. LDGdHUs shall QRt be moved RU extended while
plDWforms, ruQZays, or scDIfROds unless designed occXSiHG, uQOess GHsigQHd and recommenGHd by 
sXFh XVe. 3276 (e)(

v. 1Rn- FRnduFWiYH lDGGHUs VKall
lDQGLng wKHUe
haQGhROGV are SURYided. 1629 (c)(3),
the laGGeUV are dHVigQHd fRU sXFh XVe and
ELECTRICAL EQUIPME17” RU eqXLvalent. 
eTXippHG with tKH necessary hardware fittinJV.

w. TKH arHD around the top and ERttom of a laGGer

the rung locks eQJagHG.
To safely use fixed laGGers, employeHV must also fROlRZ the
driveways, or DQy lRFation whHUe they may be GLsplDFed

driveways, or DQy lRFation whHUe they may be GLsplDFed
1. Do QRt carry eqXLpment or matHUiDOs 
uQOess SUotectHG by barricDGes RU guDUGV.
safe XVe of lDGders.

3. FDFe the ladGHr when ascenGLng and descHQding.

4. Always usiQJ ERth hands when climbing up RU dRZn 
thDW prHYeQW the sDIe XVe RI ODddHUs.
3276 (e)(15)( B)

---

1. Employees shall be trained in the safe use of

2. Supervisors of employees who routinely use ladders 
3. The training may be provided as part of the employer’s

3. The training may be provided as part of the employer’s
IIP

4. The training shall address the following topics, unless 
employer demonstrates that a topic is not applicable to

a. Importance of using ladders s
discussion of injuries due to falls from ladders.

b. Selection of ladders, including types, proper

c. Maintenance, inspection, and removal of

d. Erecting ladders, including footing support, top
support, securing, and angle of inclination.

e. Climbing and working on ladders
f. Causes of falls, including haste, sudden movement,

Laser Equipment

The primary hazard of using laser equipment is injury to the

g. Prohibited uses, including climbing on cross bracing,

C. Laser beams must never be pointed or directed at ladders 
1801

L. It is a good idea to make sure that the stepladder
properly set up and that the spreader is in the locked

D. Lasers must have a label indicating their maximum shall 
also be trained in lad der safety training. 1801

E. Employees who have potential exposure to direct or 
3203). laser light greater than 5 milliwatts shall be provided with 
the

employer demonstrates that a topic is not applicable to F. Warning signs and labels (in accordance with ANSI) must 
the workplace: posted in areas where lasers are used.

Occu pational exposures to lead can occur in construction length, 
maximum working loads, and electrical hazards.3276 (f)(2) activities, such as plumbing system retrofits; the spraying, 
damaged 
service. 3276 (f)( 3)

discussion of injuries due to falls from ladders.
Lead

service. 3276 (f)( 3)
support, securing, and angle of inclination. 3276 (f)(4
including user’s 
position and points of contact with the ladder.3276 (f)(5)

lack of attention, footwear, and user’s physicalcondition. 3276 (f)(6)
uses other than designed, exceeding maximum
lengths, and not meeting minimum overlap

lengths, and not meeting minimum overlap
A. Cal/OSHA enforces the “Lead in Construction Safety 
is

is
properly set up and that the spreader is in the locked 1. For each job site, the lead hazard must be
before use.

2. Where lead is present, the following is

a. Lead dust must be controlled by

---

PEL. The employer shall provide hygiene facilities
for changing, showering, eating, and hand washing.
1532.1(i)

c. Workers shall have access to labels on containers of
lead and safety data sheets, and must be trained as
per 5194 and 1532.1, 1532.1(l)(1)(A).

d. The employer shall implement a written compliance
program to control hazardous lead exposures.
1532.1(e)

e. The employer shall provide the worker with and require
the use of appropriate personal protective equipment.
1532.1(f), (g)

f. The employer shall ensure that all protective clothing
is removed at the completion of a work shift only in
change areas provided for that purpose. 1532.1(g)

B. The permissible exposure limits (PELs) for airborne lead are
0.05 milligrams per cubic meter of air (mg/m3) and an action 
level of 0.03 mg/m3, both as an 8-hour time-weighted average
(TWA). 1532.1(b)(c)

C. Trigger tasks are certain highly hazardous tasks that carry
the presumption of airborne exposure above the PEL. They
require special protective measures until it is determined that
worker airborne exposures to lead are below levels specified
in 1532.1.

Following are the three levels of trigger tasks (as provided in Cal/
OSHA’s “Lead in Construction” fact-sheet
[https://www.dir.ca.gov/dosh/dosh_publications/lead-fct-sheetrev.pdf]) involving lead-containing materials and their associated 
respirator requirements: 1532.1(d)(2)

2. Level 2 trigger tasks: Using lead-containing mortar;
burning lead; rivet busting; cleaning power tools without
a dust collection system; using dry, expendable abrasives
for clean-up procedures; moving or removing an abrasive
blasting enclosure.

• Minimum respirator requirement: a half-mask
respirator with N100, R100, or P100 filters

• Minimum respirator r equirement: A full
respirator with N100, R100, or P100 filters; a supplied-

3. Level 3 trigger tasks: Abrasive blasting, welding, cutting,

• Minimum respirator requirement: A half
air respirator operated in a positive pressure

D. Protective requirements for all trigger tasks and any other
task that may cause a lead exposure above the PEL

1. Respirators, protective equipment, and protective
1532.1

2. Clothing change areas and a shower.

3. Initial blood tests for lead and zinc protoporphyrin.

4. Basic lead hazard, respirator, and safety training.

5. The employer shall post the following warning signs in 
regulated area or work area where an employee’s exposure

LEAD WORK AREA

MAY DAMAGE FERTILITY OR THE UNBORN CHILD CAUSES DAMAGE TO THE CENTRAL NERVOUS SYSTEM

DO NOT EAT, DRINK OR SMOKE IN THIS AREA

Note: The above protective requirements must be enforced until worker airborne exposures are shown to be below levels specified in 1532.1.

E. Blood lead monitoring is especially important 
work

---

F. Employer shall notify an employee whose blood lead level
is at or above 40 μg

Note: Many physicians are now choosing to place employees on medical removal protection at blood lead levels above 20 $ \mu\mathrm{g}/\mathrm{d l} $ , rather than 50 $ \mu\mathrm{g}/\mathrm{d l} $ . Thus, employers should target for the 20 $ \mu\mathrm{g}/\mathrm{d l} $ level as they evaluate the BLL results.

G. Feasible engineering and work practice controls must beimplemented to maintain employee exposures to lead

H. A written compliance program that details how 
exposures will be controlled is required.

I. On jobs at residential and public
whose exposures to lead measure above the PELs and

J. Records of air monitoring, blood lead testing, and

K. Employers who conduct lead work listed in 
notify the Division, in writing, at least 24 hours before the

Table 2 | Minimum Illumination Intensities 
/dl that medical removal protection

L. The “LEAD- WORK PRE-JOB NOTIFICATION” form with

Lighting

| Foot Candles | Area of Operation |
| --- | --- |
| 3 | General construction area lighting low activity |
| 5 | Outdoor active construction areas, concrete placement, excavation and waste areas, access ways, active storage areas, loading platforms, refueling, and field maintenance areas |
| 5 | Indoors: Warehouses, corridors, hallways, stairways,and exit-ways |
| 10 | General construction plant and shops(e.g.,batch plants,screening plants, mechanical and electrical equipment rooms,carpenter shops,rigging lofts and active storerooms,barracks or living quarters,locker or dressing rooms,mess halls,indoor toilets,and workrooms) |
| 10 | Nighttime highway construction work |
| 30 | First aid stations,infirmaries,and offices |

A. For cleaning, repairing, servicing, setup
operations the following applies: GISO

Construction areas, ramps, corridors, offices, shops, and Lock- out/Block- out 
storage areas, etc., shall be lighted to not less than the a. Machinery or equipment capable of movement 
be

b. Moveable parts shall be mechanically blocked 
locked out.

c. If the equipment must move during cleaning, servicing 
or adjusting operations, the employer shall provide

2. Repair work or setup operations.

a. Equipment that has lockable control

b. For equipment not equipped with lockable controls or
readily adaptable to lockable controls, positive means

3. Accident prevention signs or tags shall be placed on 
controls of equipment,

6. Specific hazardous energy control procedures must beutilized during shift or personnel changes to ensure the

4. A written hazardous energy control procedure shall 
developed and used by the employer.

the machine or equipment, or the release of stored energy. shall 
stopped, and the power source shall be de
energized or disengaged.

5. When servicing and/or maintenance is performed by a 
crew, craft
6. Specific hazardous energy control procedures must beutilized during shift or personnel changes to ensure the

energized or disengaged.
7. The employer is required to conduct a periodic inspection 
or of the energy control procedures(s) at least annually toevaluate their continued effectiveness and determine

or adjusting operations, the employer shall provide 8. Energy control procedures for controlling energy sour
require the use of in electrical power generation installations and related

9. De-energizing procedures of transmission
lines and equipment for the purpose of protecting
s or that is readily

adaptable to lockable controls shall be locked out or B. For heavy construction equipment positively sealed in the off

readily adaptable to lockable controls, positive means C. An authorized person shall be responsible for the following must be taken, such as de
before working on de-

1. Notifying all involved personnel.
the

the 
2. Locking the disconnecting means in the “open” position
machines, and prime movers.
with the use of lockable devices, such as padlocks
3314 (c), ( d)
be 
developed and used by the employer. 3314 (g)
procedural steps for the safe lockout/tagout of each

a. Where tagging procedures are used as specified
, department, or other group, they shall 2320.4
procedure which affords the employees a level ofprotection equivalent to that provided by the utilization

4. Effectively blocking the operation or dissipating the

D. For more helpful information see:

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 105 booklet from Cal/OSHA

English:

www.dir.ca.gov/dosh/dosh_publications/lockout.pdf

www.dir.ca.gov/dosh/dosh_publications/lockout_sp.pdf

Spanish:

2. Cal/OSHA’s Lockout/Tagout for Employers

Machine Guarding

Machine guarding is required on all moving machine parts when 
the operation of a machine or accidental contact with the parts could injure the operator or other workers. The following are some

• Gears, sprockets, and chain drives.

• Belt and pulley drives.

• Belt conveyor head and tail pulleys.

• Screw conveyors.

• Exposed shafts and shaft ends

• Hazardous revolving or reciprocating parts.

A. Exposing Employer is an employer whose employees were exposed to the violative condition at the work site regardless of whether that employer created the violative condition.

Multi-employer work sites are work locations where more than 
one employer and his or her employees work, usually but not necessarily at the same time. Most construction sites are multi

106 Cal/OSHA Pocket Guide for the Construction Industry | June 2019

Multi- Employer Worksites

106 Cal/OSHA Pocket Guide for the Construction Industry | June 2019

C. Controlling Employer is an employer who is responsible,

www.dir.ca.gov/dosh/dosh_publications/lockout_sp.pdf
eTool at

.ca.gov/dosh/etools/08- 003/index.htm
Personal Protective Equipment

When a hazard cannot be eliminated or controlled 
engineering
the operation of a machine or accidental contact with the parts could injure the operator or other workers. The following are some
(a)
(b)

A.4051Eye (a)and face protection is required when

4002 (a)
or penetrating actions. 
protection is also required

entangled. 1522(b)

2. Workers must not wear
idizing
agents. 1522(c)

---

E. Hearing protection (HP) is required because the noise levels
*Notes: The following helpf ul resources are available from* of many construction operations frequently exceed 90 dBA.When employees are subjected to sound levels listed in *Cal/OSHA:* Table 3 ( **5096** (b)), feasible administrative or engineering controls *The health and safety fact sheet “Respirator y must be used. If these controls fail to reduce sound levels to Protec tion”* *( www.dir.ca.gov/dosh/dosh_publications/respiratory* an acceptable range, workers must wear hearing protection-protection- fs.pdf*)* and be trained to properly use the HP devices. *A guide titled “The Guide to Respiratory Protection* *in the Workplace”*

Table 3 | **Allowable Exposure Levels to Sound** *( www.dir.ca.gov/dosh/dosh_publications/respiratory.pdf)*

H. Personal flotation devices are required to be worn when
**Sound Level (dBA) Time Per Day (Hours)** working over or near water. **1602**

90 8 I. Some of the SOs require specialized personal protective equipment not mentioned here. Employers and employeesshould refer to the specific SOs applicable to the type o f work 95 4 they perform to determine additional PPE requirements (for example, the Electrical Safety Orders **2299** – **2874**). 100 2

105 1 J. Work on exposed energized parts of equipment or systems is 110 1/2 allowed when suitable personal protective equipment andsafeguards (i.e., approved insulated gloves or insulated are provided and used, and other conditions as listed in tools)

**2320.2** (a) are met. **2320.2**.
F. Head protection requirements include the following:
1. Head protection is required for employees who are
exposed to flying or falling objects or to electric shocks

# Pile Driving

and burns. **3381** (a)

2. When required, the employer shall provide each employee Regulations concerning pile driving are as follows:
with head protection that meets the requirements of3381 (b).

A. A supervised danger zone must be established around the
operating hammer if employees are cutting, chipping, or

3. These employees must wear approved head protection. welding. **1600** (a)
Hair must be confined if there is a risk of injury fromentangl ement in moving parts, combustibles, or toxic

B. A blocking device or other effective means capable of safely supporting the weight of the hammer shall be provided to
contaminants. **3381** secure the hammer in the leads and shall be used at all

(e)
times when any employee is working under the hammer. **1600** (b)

4. Everyone at a construction site should wear hard hats with
bills in the forward position.

C. All pressurized lines and hoses must be secured by 1/4-
G. Respiratory protection is required when engineering or inch alloy steel chain (3,250 lb. rated capacity) or wire rope
administrative controls are not feasible or adequate for of equivalent strength. **1600** (c)(1) limiting harmful exposure to airborne contaminants.

D. When used, work platforms must meet the specific
requirements of In these circumstances **1600** (d, ). exposed employees must wear respirators approved by the National Institute for

E. Leads shall be provided with a continuous ladder or horizontal
Occupational Safety and Health (NIOSH). (a) bracing that is uniformly spaced at intervals no greater than 18 in ches, and the leads shall be equipped with adequate For all respirator use, a written respiratory protection program anchorages for use with a personal fall protectio n system. The must be in place, covering employee training, respirator operator of the equipment will apply all brakes and necessary selection, medical evaluation, fit testing, use, cleaning, sanitizing, inspection, and maintenance. (a), ( **c)**

**108 Cal/OSHA Pocket Guide for the Construction Industry | June 2019** Cal/OSHA Pocket Guide for the Construction Industry | June 2019 109 safety switches to prevent uncontrolled motion of the 
equipment before an employee may access the leads.

F. Fall protection must be provided when workers are
to unguarded platforms or walkways exceeding 7 1/2 ft. inheight.

G. Walkways that are at least 20 in

I. Where a drop hammer is used for driving piling, other than
sheet piling, a driving head or bonnet shall be provided to

The pile hammer, clamp, power unit, and supply hoses shall be inspected in accordance with their manufacturer's recommendations. 1600(i)

J. Adequate and accessible flotation gear (

K. The engine or winch operator shall receive signals only from 
designated signaler.

Exception: When an employee is aloft in the leads, the hammer shall not be moved except on the signal of the employee aloft.

L. A hammer stop block is required.

Q. Barges or floats used in pile driving shall meet

P. The rated capacity of the hammer’s suspension shall 
be exceeded. The manufacturer’s recommendations for extracting piling shall be observed at all times.

Pressurized Worksites
equipment before an employee may access the leads.

M. Two steam (or compressed air) shutoff valves are required; 
one must be a quick

N. Rigs must be stabili zed with guys or outriggers when

O. Piles shall be unloaded and stored in a controlled
1601

Pressurized worksites (also known as compressed exposed 
to unguarded platforms or walkways exceeding 7 1/2 ft. inheight. 1670 (a) are sites where employees perform duties in a pressurized 
wide must be 
access to all work areas. 1600 (h)
or 
Sheet piling shall be firmly stabilized before 
workers are permitted to work on them.
sheet piling, a driving head or bonnet shall be provided to 
the head of the pile and hold it true

e.g., ring buoys, a

boat) must be provided to protect workers who A. Cal/OSHA must receive written notification at least seven 
are exposed to a drowning hazard.

1. Following the guidelines for proper compression Exception: When an employee is aloft in the leads, the
employees as per

2. Not subjecting employees to pressure exceeding 
pounds per square 
3. Not allowing employees working in compressed air to

needed. 
Hammers shall be lowered to the bottom of the leads while
the pile driver is being moved (traveling).

the pile driver is being moved (traveling).
4. Controlling decompression of employees as discussed
manner.

the

---

6. Temperature, illumination, sanitation, and ventilation as
per

7. Providing forced ventilation during decompression

8. Taking one or both of the following steps 
an oxygen breathing gas system is used

a. The oxygen breathing gas system shall capture the
oxygen that is not consumed by the user and directlyexhaust it to a well

b. An oxygen meter shall be used to continuously monitor the oxygen concentration inside the

9. R etaining a supervising physician who shall be
available at all times while pressurized work

10. Following fire prevention and oxygen safety

Ramps and Runways
. Ventilation in the locks and chambers,

C. Employees who are exposed to or control the exposure of
others to hyperbaric conditions shall be trained in hyperbaric

Qualified Person

exception of the medical chamber, shall be such 
Regulations concerning ramps and runways are as follows:

1. Ramps must be properly designed to provide a 
to means of access for foot or vehicle
air. 6100 (f)

A. General requirements

when 2. Open sides of ramps that are 7 1/2 ft. or more 
an oxygen breathing gas system is used during

B. Foot ramps decompression, to ensure that the concentration of

1. Foot ramps must be at least 20 inches
be secured and supported to avoid deflection or
oxygen that is not consumed by the user and directlyexhaust it to a well

oxygen that is not consumed by the user and directlyexhaust it to a well
2. If the ramp slope exceeds 2 ft. of rise for every 10 ft. 
run, cleats must be 8 inches
An oxygen meter shall be used to continuously monitor the oxygen concentration inside the chamber

An oxygen meter shall be used to continuously monitor the oxygen concentration inside the 
C. Wheelbarrow ramps and runways or lock.

1. Wheelbarrow ramps and runways must be firmly 
available at all times while pressurized work is in

available at all times while pressurized work is 
2. Ramps more than 3 ft. high must be 30 in
progress in order to provide medical supervision o
and

3. Falsework design loads must be increased by 10 psf 
requirements 
6115.

who by reason of training, experience, or instruction has 
demonstrated the ability to perform safely all assigned duties;

others to hyperbaric conditions shall be trained in hyperbaric Roofing Operationsrelated

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 113 associated with the roofing industry:

A. Specific fall protection methods are used for:

• Different roof heights and

• Different types of roofing o perations including custom

• Re-roofing operations

• Roofing replacements or additions on existing residential
dwelling

• Roofing operations (including new productionresidential

1. For single-unit roofs with slopes of 0:12 through 4:12 
more than 20 ft. in height.3.

a. Warning lines and headers

b. Personal fall protection systems

c. Catch platforms with guardrails

e. Eave barriers

a. Parapets that are 24 in ches

f. Parapets that are 24 in ches

e. Eave barriers

g. Standard railings and toeboards. Article

Exceptions: 1730(b)

f.1730 Standard railings and toeboards. Article

b. Personal fall protection systems

of height.

d. Scaffold platforms

Exception:

114 Cal/OSHA Pocket Guide for the Construction Industry | June 2019

-Provisions in

» Has been designed for use on roofs having slopes greater than 4:12 and

» Is used where a parapet is:

i.type At least 36 in ches high at roof edges

ii. Perpendicular to the direction in which the with slopes less than
and equipment is
1730 (b)

more than 20 ft. in height.3. 1730 (b)
For single-unit roofs with slopes exceeding 4:12, no
equipment that is pulled by an operator walking backwardsshall be
1724 (f)

1724 (f)
4. For multi- unit roofs with slopes 0:12 through 5:12 and more
than 20 ft. in height, employees shall be protected from

a. A roof jack system as provided in s

b. (A minimum of b) 24-in

16c. Other methods affording equivalent

)5. For multi-unit roofs with slopes exceeding 5:12 and more
than 20 ft. in height, employees shall be protected from 
Whenever any equipment is pulled by an operator
who walks backwards, one or a combination ofthe

b. Personal fall protection systems

c. Catch platforms
by an operator who walks backwards or anoperator rides motorized equipment
d. Scaffold platforms

by an operator who walks backwards or anoperator rides motorized equipment
d. Scaffold platforms

f. Roof jack systems (safety lines are required when

B. New production- type residential construction with 
more 
than 20 ft. in height: 1730(c)
1730 (c)

---

1. For New Production-Type Residential Construction with
slopes 3:12 through 7:12 and the eave height exceeds

a. Personal Fall Protection

b. Catch Platforms

c. Scaffold Platforms

d. Eave Barriers

e. Standard Railings and

f. Roof Jack Systems

2. For New Production-Type Residential Construction with
slopes greater than 7:12 regardless of height, employees

1. Work on or near gable

2. Slipping hazards

2. An attendant must be stationed within 100 ft. of any

D. Hot operations are subject to the following

3. Liquefied petroleum gas cylinders must not be

3. Roof holes and openings

5. Work on ladders and

7. Placement and location of materials on the

6. Access to the

9. Care and use of fall protection

15 ft. above the grade or level below, employees shall
a. For a kettle with a capacity of less

4. A Class BC fire extinguisher shall be kept near each 
slopes 3:12 through 7:12 and the eave height exceeds
15 ft. above the grade or level below, employees shall

b. For a kettle with a capacity of 150 gal.

c. For a kettle with a capacity of more 
350 gal. = 20:BC

5. The fuel tanks of compressedbe equipped with a relief valve set for a pressure not 
16

6. Coal tar pitch operations are subject to the following
requirements:
slopes greater than 7:12 regardless of height, employeesshall be protected from falling by methods prescribed in

slopes greater than 7:12 regardless of height, employeesshall be protected from falling by methods prescribed in 
a. Workers must use skin protection.

b. Washing or cleansing facilities must be
1728
training.

training.
c. Workers must use respirators and eye protection in-Type Residential Construction
include the following in addition to those required by

7. Hot pitch and asphalt bu ckets have the following
maximum capacities:

a. Carry buckets = 6 gal.

b. Mop buckets = 9 1/2 gal.

E. Personal fall protection for roofing operations is regulated

1. Personal fall arrest systems, personal fall restraintsystems, and positioning devices must be installed 
roof
2. Safety lines must be securely attached to substantialanchorages on the roof.

2. Safety lines must be securely attached to substantialanchorages on the roof.
regulations:

regulations:
3. Roof openings must be railed or covered. Temporary 
up railing and toeboards shall meet the requirements of
(a)
kettle 
not equipped with a thermostat. 1725 (d)

---

5. An employee approaching within 6 ft. of any finished
skylight or skylight opening must be protected

Scaffolds

Work activities associated with scaffolds are subject to many 
hazards

A. General requirements

1. Scaffolds must be provided for work that cannot be 
safely by employees standing on ladders

Exception: A 12-inch wide plank on members that are on 24-inch (or closer) centers is permitted. 1637(a)

2. The design and construction of scaffolds must conform 
to applicable standards and requirements

3. Manufactured scaffolds shall be used in accordance

c. Heavy- duty scaffolds: 75 psf of work

b. Medium- duty scaffolds: 50 psf of work

Exception: Where specific requirements that address riding on a rolling scaffold in section 1646(i) and (j) may conflict with the manufacturer's recommendations, the provisions in section 1646(i) and (j) take precedence.

e. Engineered scaffolds: as determined by a California
skylight or skylight opening must be protected registered Civil Engineer with scaffold design
through the skylight or opening as specified in

4. Each scaffold must be designed to support its own

5. The erecting and dismantling of scaffolds are

a. Scaffold erection and dismantlement must 
however, falls are by far the number

however, falls are by far the number
b. Scaffolds must be erected and dismantled 
or death among construction workers. The following

c. A DOSH permit is required for erecting and dismantling
scaffolds that exceed three stories or 36 ft. in height.
done 
safely by employees standing on ladders

safely by employees standing on ladders 
6. Scaffold access: Ladders, horizontal members, and or on solid
construction that is at least 20 in
stairways
1637(n)

a. Ladders may be used
to applicable standards and requirements

2. Fixed ladders shall comply with T8 CCR

4. Ladders must extend 3 ft. above the platform, Exception: Where specific requirements that address

b. Manufactured hook-on and attachable ladders shall 
secur
weight

weight 
1. Shall be specifically designed for the type 
and 4 times the maximum load. Maximum working loads
scaffold used;
are as follows:

4. Shall be positioned so that their bottom rung is not 
determined by a qualified person or a California more than 24 inches (61 cm) above the scaffold
registered Civil Engineer with scaffold design
experience.

---

maximum vertical intervals. • Metal scaffolds: 10-in ch (max) horizontal. **1644** (a)(7)

c. Horizontal members built into the end frame of a 2. Space between the building (structure) and
scaffold may be used to access plat forms if: the platform **1637** ( n)

1. The horizontal members are parallel and level.• Wood scaffolds: 14-in ch (max). **1640** (b)(5)
2. The horizontal members make a continuous • Metal scaffolds: 16-in ch (max). **1644** (a)(7)
ladder, bottom to top, with the ladder sides of the

- Bricklayers’ scaffolds: 7 frames in a vertical line.
-in ch (max) to finished face of building. **1641** (g)(2)

3. The horizontal members provide sufficient clearancefor a good handhold and foot space. **1637** (n), **1644** (a)
c. Platform minimum widths are as follows:
d. Stairways must conform to the following: **1637** (n)( **2)**
01. Light duty: 20-in ch **1640** (b)(5)
1. Permanent stairways for scaffolds must comply with
02. Heavy trades: 4 ft. **1641** ( c)
GISO requirements (i.e. d. Platform slope must not exceed 2 ft. vertically to 10 , **3214**, and **3622**). ft.

2. Prefabricated scaffold steps or stairs must comply
horizontally. **1637** (o) with: e. Overhead protection is required when people are

- ANSI 10.8- 1988 or ANSI/ASSE 10.8-2001 if
working overhead. **1637** (q) manufactured on or before May 28, 2005 f. Slippery platform conditions are prohibited. **1637** (p)

- ANSI/ASSE 10.8-2001 if manufactured after g. All scaffold platforms shall meet the planking
May 28, 2005 requirements of s ection 1637. **3622** ( f )(5)

7. Scaffolds must be secured as follows: 9. Planking must conform as follows:
a. Scaffolds must be tied off with a double-looped No. a. All solid sawn planking, unless specified in other orders,
12 iron wire or a single-looped No. 10 iron wire or must be made of scaffold grade (structural the plank equivalent. A compression member should prevent scaffold movement toward the 2200 p si) lumber (see structure. **1504) with a nominal dimension** **1640**, **1641**, and **1644** of at least 2" x 10". **1637** ( f)(1) Prior to being placed into service, all solid sawn wood

b. Light duty wooden pole scaffolds must be tied off every scaffold planks shall be certified by, or bear the grade
20-ft. horizontally and vertically. **1640** (b) stamp of, a grading agency approved by the AmericanLumber Standards Committee. **163 7** (f)(5)

c. Heavy- trade wooden pole scaffolds must be tied off every
15-ft. horizontally and vertically. b. All Douglas Fir and Southern Pine planking sized **1641** (f) 2 x 10-inch (nominal) or 2 x 9-inch (rough) shall not

d. Metal scaffolds must be tied off as specified in **1644** (a)(5).
exceed a maximum span as follows: **1637** (f)(2)

8. Scaffold platforms must conform to the following:01.
Light trades @ 25 psf = 10 ft.

a. Platforms must be capable of supporting the intended
02. Medium trades @ 50 psf = 8 ft.
load. **1644** (a)(1), and **1637** ( m)

03. Heavy trades @ 75 psf = 7 ft.
b. Platforms must be planked solid (without gaps) and cover
the entire space between scaffold uprights. c. The maximum permissible spans allowed for other (b), wood

(g), (a), species of scaffold planking shall not exceed 10 ft. and and (e)
shall be determined by a licensed professional engineer. *Exception: In solid planking the following gaps are* (f)(3) *permissible:*

1. All manufactured scaffold planking, including
1. The opening under the back railing
engineered wood products, lamina ted veneer lumber,

- Wood scaffolds: 8-in ch (max) horizontal. (b)(5) metal, composite, and plastic planks shall be capable
**120 Cal/OSHA Pocket Guide for the Construction Industry | June 2019** Cal/OSHA Pocket Guide for the Construction Industry | June 2019 121 of supporting, without failure, its own weight and 4 
times the maximum intended working

2. Prior to being placed in service, all laminated 
veneer lumber scaffold planks  b.

3. Planks with spans in excess of 10 ft. shall 
labeled to indicate the maximum intended

4. Planks shall be used in accordance with 
manufacturer’s specifications.

d. All scaffold planks shall be visually inspected

e. Defective or damaged scaffold planks shall not be

f. Planking shall overhang the ledger or support 
follows:

02. A maximum of 18 inches 1637(g), 1645(b)

g. A single plank (up to 4 ft. high) is only permitted on

• X-braces that substitute for a top rail must 
intersect 42 in

12. Height limits for scaffolding are as
times the maximum intended working

11. Toeboards are required on all railed sides of work surfaces

10. Guardrails must be installed on open sides and ends 
platforms that are 7 1/2 ft. or higher.

times the maximum intended working
a. Wood (frame/post) = 60 ft.

Tube and coupler = 125 ft.
veneer lumber scaffold planks  b. manufactured after

c. Tubular (welded) = 125 ft. December 2, 2010,

Exception: The above limits do not apply when the

d. Horse (single) = 10

e. Horse be (tiered) = 10
labeled to indicate the maximum intended

labeled to indicate the maximum intended 
13. Prohibited scaffolds and supports:
working load.

b. Jack scaffolds (with brackets attached to single

c. Lean for  - to scaffolds
fore use each day.

fore use each 
d. Stilts

e. Nailed brackets
be removed

f. Brick or
as

g. Loose tile
A minimum of 6 inh.ches

14. Maximum scaffold working load must be posted or 02. A maximum of 18 in
provided to and available from the 
-trade wooden pole and horse scaffolds. 
1640( b) (5)(practices: A), 1647

A minimum of 6 inh.chesUnstable objects

15. Prohibited work 1640( b

a. Work 1/60  on or from scaffolds during storms or high 
of the span when loaded to the manufacturer’s 
recommended maximum load.

recommended maximum load.
1. A qualified person has determined that it is 
of and
platforms that are 7 1/2 ft. or higher. 1621 (a)

platforms that are 7 1/2 ft. or higher. 1621 (a)
2. Employees are protected by a personal fall 
Exception: 1644 (a)( 6)(Asystem or wind

to 30 in ches above the
platform

---

B. Scaffold-specific requirements

After reviewing the general requirements for scaffolds, refer

The requirements listed below are unique to each specific type of scaffold listed:

1. Tubular welded scaffold systems

a. Frames must nest with coupling or stacking pi
provide proper vertical alignment.

These scaffold systems are commercially fabricated and

2. Tower and rolling scaffolds

b. Frame panels must be vertically pinned if uplift

j. Trucks or vehicles that have scaffolds attached to 
them shall have a device in use whenever
to the regulations listed below (and any other 
SOs

b. A screw jack must extend 1/3 of its length into the 
tube and the exposed thread must not exceed

h. Ladders or other unstable objects shall not be 
on top of rolling scaffolds to gain greater height.

c. Two wheels or casters must swivel; all four must
1646

d. A fully planked platform is required.

e. All frame and center joints shall be locked together

i. When scaffolds are built on motor trucks or vehicles,
they must be rigidly attached

f. The scaffold must have horizontal diagonal

SOs
k. Employees may ride on a rolling scaffold moved by 
others below if the following conditions exist:

1. The floor or surface is within 3 degrees of

2. The minimum dimension of the scaffold base, 
when ready for rolling, is at least 1/2 of the 
These scaffold systems are commercially fabricated and
must meet the following requirements:

3. The wheels are equipped with rubber or ns to 
1644 (c)( 5) resilient tires. For towers 50 ft. or 
may

) 4. The manual force used to move the scaffold 
be applied as close to the base as practicable, 
The specifications for tower and rolling scaffolds are as 
follows:

follows:
5. Before a scaffold is moved, each employee on 
unless the

6. No employee shall be on any part of the 
leg 
tube and the exposed thread must not exceed
12 in ches. 1646 (b)(2)

12 in ches. 1646 (b)(2)
l. Employees may ride and move on a Self
lock. rolling scaffold while on the platform without ass
)
1. All of the provisions in 1646(ithat the scaffold need not be moved by others

)
1. All of the provisions in 1646(ithat the scaffold need not be moved by others 
by 
lock pins, bolts, or equivalent fastenings. 1646
bracing

more 
3. The working platform shall be no less than20 inches
1646 (b)
placed 
on top of rolling scaffolds to gain greater height.1646 (f)

on top of rolling scaffolds to gain greater height.1646 (f)
4. Wheels or casters of rolling scaffolds shall be
provided with an effective locking device 
to the truck or vehicle.
1646 (g)

---

scaffold when workers are climbing or working on 
the scaffold.

5. The use of power systems such as motor vehi
add

m. Employees who ride on rolling scaffolds and
employees who

Illustration 9 | Tower and Rolling Scaffold

3. Suspended Scaffolds

a. General requirements for suspended 
cles,
-on motors, or batter y-powered equipment to

y-powered equipment to
propel a rolling scaffold is
assist in moving employees riding

assist in moving employees riding 
1. Each wire is suspended from a separate outrigger
on a rolling scaffold shall be trained on the hazards 
beam or thrustout.

2. Multi- stage units or units with overhead protection
must be equipped

3. The scaffold must be inspected daily by a qualified 
person and tested frequently.

4. When a suspended scaffold is left unattended in
an elevated position, it shall be securely lashed to

5. All hoisting mechanisms and metal platforms

6. Outrigger beams must be secured in a saddle andanchored at one end to

7. The beam must be capable of supporting

8. Use of a ladder as a platform is prohibited even if

9. The load limit is one person per suspension
1660

12. Platform dimensions must be as

• Width = 14 in. to 36 in. 
= 24 in. to 36 in. if the platform is used by

---

• Span = 10 ft. (2" x 10" planks). 
= 12
• Bolster (ledger) = 2" x 4" cross section.

b. Specific requirements for suspended

1. Powered suspended scaffolds

The general rules for swing scaffolds apply except as

• The minimum platform width must be 20
1667

• Railings are required on open
and on all sides if the scaffold is suspended by

2. Interior hung suspended scaffolds

• Rope: 1-in ch diameter manila (min.).

• Personal fall protection and a separate lifeline:
1660 (e)
Required for each person.
(c)

(c)
4.1660Boatswain’s

• Load release units for fast descent areprohibited.

These scaffolds are of a wood or steel

• Suspension ropes must be wrapped twice
around supporting members and ledgers.

These scaffolds are intended for such work aswelding, riveting, and bolting.

• Pla tform size: 3 ft. x 6 ft. 3/4x - in ch plywood.
1663 (a)(1)

The general rules for swing scaffolds apply except as • Platform size: 10 in. x 24 in. x 2 in.
listed below:

The use of a boatswain’s chair requires training or

3. Float suspended scaffolds.

listed below:
• Rope: 5/8-in ch diameter manila (min.) and
 in ches 3/8 inch

• Personal fall protection and a sepa,
and on all sides if the scaffold is suspended by Required
one rope. 1667 (a)

one rope. 1667
• Area below: Barricaded.

-type  5.
Needle-beam scaffolds.

The specifications for needle

• Rope: 1 1/4-in ch diameter manila.

• Personal fall protection: Required in
-tube-and
accordance with Article 24 in the CSOs.
coupler type, and they are suspended from a ceiling

Note: See the hitches for holding needle beams in Illustration 10.

6. Outrigger scaffolds.

around supporting members and ledgers. Outrigger scaffolds are regulated as follows:
1665 (b)

1665 (b)
• Brackets or beams must be anchored or
braced against turning, twisting, or tipping.

• Beam length: Outboard of fulcrum must not 
exceed 6 ft; inboard must be 1 1/2 times the
(a)(4)

• Platform: at least two 2-in
1645
These scaffolds are intended for such work aswelding, riveting, and bolting.

• Beam size: 3 in ch es x 12

---

Illustration 10 | Hitches for Holding Needle Beams

Square knot

Bowline

Bowlin e

Eye splice

Running bowline

7. Bracket scaffolds (light trades).

Brackets must be bolted through
tanks,
1645(d)

• Platform: 20 in ch es

• Load limit: Carpenter’s type = two workers and
75 lbs. of equipment.

8. Horse scaffolds.

The specifications for horse scaffolds are as follows:

• Platform width:

i. Light trades = 20 in
inch

ii. Heavy trades = 4 ft. (min.).

iii. Width of base legs = 1/2 x height
1647

i. Collapsible horse = 6 ft. (max.)

• Height:

ii. Single horse = 10 ft. (max.).

iii. Two tiers (max.) = 10 ft. (max.).

9. Ladder jack scaffolds.

• Span = 16 ft. (max.)

• Height = 16 ft. (max.)

• Width = 14 in. (min.)

• Load = two workers (max.)

» Ladders must be Type I, IA, or IAA duty rated

Notes:

---

• The load limit is one person per
1654

• Fall protection or railings are required.

Silica Dust

Construction work that involves exposure to crystalline silica
containing materials can cause lung diseases. These silica

• Sand

• Rock

• Ceramic and terracotta

• Concrete and concrete

• Manufactured

• Roof tiles

• Bricks and

• Grouts and

• Some joint compounds

• Abrasive materials

Exposure to crystalline silica can cause a variety of lung

The 8-r permissible exposure limit (PEL) hou
3with an Action Level crystalline silica is 
3(see  of 0.025 mg/m Table AC-1 of 5155

scaffold. For additional information on the hazards and control of silica 
exposures see the

Hazards 1654 o(c) f Silica in C onstructio
( www.dir.ca.gov/dosh/etools/08

-
containing materials can cause lung diseases. These silica

containing materials can cause lung diseases. These silica
Before beginning work that could expose employees to 
containing materials include (but are not 
crystalline silica, employers must comply with the following requirements:

A. Know and understand T8 CCR 
1530.1.

1. Procedures to ensure that
maintain their effectiveness.

2. Additional training topics for employees and
supervisors.

B. Methods of exposure control or compliance.

C. Exposure assessments.

D. R espiratory protection

E. Ho usekeeping

Hazardous work activities include abrasive blasting with sand and Stairways are an acceptable method for gaining access to floors 
loading, dumping, chipping, hammering, cutting, and and working levels of buildings and scaffolds.

diseasesF. Restricted areas. , including silicosis, lung cancer, COPD (chronic

G. W ritten exp osure control plan.

H. M edical surveillance.

I. Communication of respirable crystalline silica hazards to 
employees.

established 
Stairways
 section 1532.3

A. In buildings of up to three stories or 36 ft. in height, at

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 133

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B. In buildings of more than three stories or 36 ft. in height,

C. A stairway to a second or higher floor must be installed

E. In concrete buildings, a st airway must be installed to the

F. Stairways shall be at least 24 in
be equipped with stair rails, handrails, treads, and

G. All guardrails, including their connections and
anchorage, shall be capable of withstanding a load

H. Handrails must be 34 in ches to 38 in

I. Wooden posts shall be not less than 2
section, spaced at 8 ft. or closer intervals. Wooden top

J. Railings and toeboards must be installed around
1626

1. Determining the conditions at the worksite.

K. The stairway shall have landings at each 
less than 30 in

A. Host employers have the primary responsibility for maintaining safe worksites. Temporary (temp) agencies

establish responsibilities in their two 
or more stairways are required. 1629

Temporary Agencies

L. Stair steps must be illuminated with at least 5 f
of

or more stairways are required. 1629 (a)(4)
C. In general, temp agencies are responsible for ensuring that
before employees have received proper training. Host employer isresponsible for the si
studs are raised to support the next higher 
leading

leading 
D. Both the temp agencies and the host employer need to floor. 1629(b)( 2)
all relevant California labor laws and 
airway must be installed to the floor 
that supports the vertical shoring system. 1629
in width and shall

in width and shall 
be equipped with stair rails, handrails, treads, and

be equipped with stair rails, handrails, treads, and
landings.
anchorage, shall be capable of withstanding a load

anchorage, shall be capable of withstanding a load as 
specified in 1620 ( c).
above the tread nosing.
by 4-in ch in cross

section, spaced at 8 ft. or closer intervals. Wooden top 
railings shall be smooth and of 2 1. Where temp agency exercises day

chE. by 4-in ch in cross
Injury and illness records should be kept
section, spaced at 8 ft. or closer intervals. Wooden top

stairwells.

floor or level of not
ches in the direction of travel and extend at
least 24 in ches

least 24 in ches
- candles

B. Specifications for toeboards are as
1. A toeboard must be securely fastened at a minimum

Specifications for toeboards are as
1. A toeboard must be securely fastened at a minimum 
inch
employer’s role,
recommends temp agency and host employer

Toeboards
Host employers have the primary responsibility for maintaining safe worksites. Temporary (temp) agencies may be made of any substantial 
with openings not more than 1

2. Where material is piled to such a height that a standard 
toeboard

Toilets/Washing Facilities/

A. Toilet fa cilities are required at the

Regulations concerning toilets, hand washing, and sanitation 
include the following:

B. A toilet is required for each 20 employees or fraction

Exception: Sites with fewer than five employees are not required to provide separate toilets for each sex; however, toilets must be lockable from the inside. 1526(a)

C. Toilets must be kept clean and supplied with toilet

D. Toilets are not required for mobile crews if transportation

E. One washing station must be provided for each 20 employees 
or fraction thereof.

I. If showering is required by the employer, the shower must 
specific requirements.

F. Washing stations must be clean and have an adequate

G. Washing station must have a sign indicating water is

H. Wash stations are to be located outside and not attached

material, either solid o drinking water: 
with openings not more than 1

J. An adequate supply of potable (drinkable) water must be provided at each

with openings not more than 1
1. Provide drinking fountains.

2. Supply single-

does not provide protection, paneling or 3. Supply sealed one-time use water
screening from floor to intermediate rail or top rail shall

screening from floor to intermediate rail or top rail shall 
4. Ensure re-usable, closable containers are available

Note: Additional requirements for the provision of drinking water in outdoor places of employment are contained in 3395.

Tools and Equipment

General r equirements for t ools and 
1526 (b)

1526 (b)
• Tools must be kept clean and in good repair.
thereof

thereof 
• Only trained or experienced employees may operate tools, 
of each sex; urinals may be substituted for half of the units.
machines, or equipment.
1526 (a)

• Power-operated tools must be grounded or of Exception: Sites with fewer than five employees are not  the double
insulated type. If double

• Power paper.- operated tools should be kept out of wet
2395.45

1. Utilization equipment used in hazardous (classified) locations 
1527 (a)

2. Hand-held supply motor- operated tools,
water, and single-use towels (or warm air blower). operated
1527 (a)

1527 (a)
3. Motor- operated tools and utilization equipment of the 
for following types: Drills, hedge clippers, lawn mowers, 
(a)( 1)(F)

4. Tools likely to be used in wet and conductive to 
1527 ( a)(1)( F)

Exception: Where there are less than five em

1527
Exception: Where there are less than five em

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 137 equipment protected by an approved 
double insulation. Where such a system is

» Double-insulated type power-operated tools are not required to be grounded.

B. Guards required b y the SOs must not be removed

1. Only trained workers holding a valid ope

2. Containers must be lockable and bear a label that says 
POWDER-ACTUATED TOOL

system of 3. The PAT must be provided with the
double insulation. Where such a system is 
a. An operating and service manual
employed, the equipment shall be distinctively marked.
b. A power load and fastener chart
c. An inspection and service record
d. Repair and servicing tools. 1687
or 
4. Limitations on the use of PATs 
3942
a. Workers must not leave the tool unattended.
the 
b. Workers must not use the tool:
1. In an explosive environment.- 
man) on-off switch: 3557 (a)
2. On hard or brittle material.
3. On easily penetrated or thin materials or materials 
of questionable 
4. Within a 1/2-in ch of the edge of steel.
5. Within 3 inches of the edge of masonry.
6. On thin concrete. 1690 (g)
7. On spalled areas. 1690 (h)
8. On existing holes. 1690 ( i )
5. Requirements for operating PATs
a. Eye or face protection is required for operators 
assistants.
b. Operators must inspect the tool before using
1691
c. Defective tools must not be used.
d. Tools must not be loaded until ready for use.
e. Tools must be unloaded if work is interrupted.
f. Operators must never point a loaded tool or an 
is tool at anyone.
(a)
g. The tool must be held in place for 30 seconds 
shall be approved for their misfire.
1505, or have California 
h. Different power loads must be kept in separate numbers. 1684 (a)(1
compartments. 
rator’s card may 
1685 i. Warning (a)(1) signs that say POWDER-
POWDER-ACTUATED TOOL on the outside.
j. Misfires and skipped power charges must be stored container must be kept under lock and

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 139 and disposed of properly.

E. Concrete-finishing tools must be equipped with a deadtype control. 
F. Airless spray guns must have an automatic or visible manual

F. Airless spray guns must have an automatic or visible manual 
release safety device or a diffuser nut and tip guard.

G. Circular power saws are regulated as

a. All saws shall be equipped with guards above and below the base plate or shoe.

b. Teeth on the upper half of t

Exception: The upper guard shall cover the saw to the depth of the teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts.

c. Teeth on the lower half of the saw blade must be
guarded with a telescopic or hinged guard

H. Miter (chop) saws are regulated as follows:

1. With the carriage in the full cut position, a guard must
enclose the upper half of the blade and at least 50

d. Saw guards must not be blocked open to

2.(a)With the carriage in the full retract (raised) position, 
man- 
1698 (d)

2. Self-feed Circular power saws:

b. The employer shall ensure that power feed devices

3. Employers shall instruct employees to keep hands and 
release safety device or a diffuser nut and tip guard.

follows:
I. Stump cutters are regulated as follows:

1. Stump cutters shall be equipped 
All saws shall be equipped with guards above and below the base plate or shoe. 4307 (a)

2. Each employee in the immediate area of stump grinding 
be 
operations shall wear PPE as required by Article 10 of the GISO.
4307 (a)
Exception: The upper guard shall cover the saw to

Exception: The upper guard shall cover the saw to 
J. Radial arm (horizontal pull) saws are regulated as
the depth of the teeth, except for the minimum arc

the depth of the teeth, except for the minimum arc 
1. The upper half of the saw blad
completely covered.

guarded with a telescopic or hinged guard 2. The sides of the lower exposed portion of the blade . The 
lower guard must automatically and instantly return

3. An anti-kickback device must be used during

4. Saws must return automatically to the table’s back 
released.

5. Saws must have a stop provided to prevent the saw 
from passing the front edge of the table.
prevent

prevent 
K. Table saws are regulated as 4307 (c)

1. A hood must cover the saw to at least the depth of 
4296,

4. Push sticks or push blocks shall 
4307.1 work

enclose the upper half of the blade and at least 50 
of the arbor end.

L. Band saws are regulated as follows:

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 141

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1. All portions of the band saw blade must be guarded 
except between the guide rolls and the table.

2. Band saw wheels must be enclosed.

M. Chain saws are regulated as follows:

1. Chain saws must be equipped with a constant
control that returns the saw

3. Chain saws must be started on the ground or where it
is otherwise firmly supported.

2. Chain saws must have a clutch adjusted to prevent

4. A chain saw shall not be running when it is being
carried up into a tree.

5. Chain saws weighing more than fifteen pounds used in
trees must be supported by a separate line or tool

N. Pneumatic tools are regulated as

1. Safety clips are required on pneumatic tools to prevent 
from being accidentally expelled from the barrel.

2. Pneumatic nailers and staplers must have a safety 
that prevents the tool from operating when the muzzle is

Exception: Light-Duty Nailers and Staplers

3. Pneumatic nailers and staplers must be disconnected from

6. Jackhammer operators must wear personal protective
equipment when required (see Personal Protective

4. The air hose of pneumatic nailers and staplers must be
secured at roof level to provide ample but not excessive
5. All pneumatic hoses exceeding 1/2

O. All portable pipe threading/cutting machines, portable 
except between the guide rolls and the table. 4310 driven
4310 (a)(2)

Traffic Control-pressure

control that returns the saw to idling speed when 
Regulations concerning traffic control are noted below:
3425 (a)(3)

A. Worksite traffic controls and placement of warning signs
the 
must conform to the requirements of the “California Manual
chain drive from engaging at idling speed. 3425
is otherwise firmly supported. 3425 ( a)(2)
3425(a)( 5)

B. Specifications for the size and design of signs, lights, anddevices used for traffic control shall be as described in the “Manual
trees must be supported by a separate line or tool
lanyard, except when working from an aerial

C. Employees (on foot), such as grade
others
dies 
from being accidentally expelled from the barrel.

from being accidentally expelled from the barrel.
device 
that prevents the tool from operating when the muzzle is
not in contact with the work surface.

D. Flaggers (see Flaggers section in this guide) are required
when

the air supply at the tool when performing any maintenance
or repair on the tool, or

equipment when required (see Personal ProtectiveEquipment section in this guide), including foot protection
Each year, serious and fatal injuries are caused by ineffective and 
inadequate training of employees. Employees who are newly

Training

A. Effective

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 143

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Effective training relates directly to the work being done by 
employees. It instructs employees on general safe work

1. Communicates information in a language and by methods 
understandable to all employees (including

4. Allows group hazard identification and problem solving 
means of demonstrations, asking questions, discussing

3. Is participatory and involves employees by drawing on

5. Provides opportunities to demonstrate newly learned 
work practices and the safe use of tools,

2. Helps establish a relationship with employees to 
trust and

7. Is repeated as often as

8. Encourages employees to express safety concerns and 
make suggestions

For help with your workplace training, see the Effective Workplace Training eTool (www.dir.ca.gov/dosh/etools/09-002/index.htm).

The specific Cal/OSHA training requirements that apply to each

4. They are exposed to known job
poisons, hazardous materials and gases, harmful plants

1. They are first hired.

The SOs require training employees when:

5. New substances, processes, procedures, or equipment 
employees. It instructs employees on general safe work 
practices and al so provides specific information on the hazards

6. The employer is made aware of a new or

7. Supervisors need to familiarize themselves with the safety
understandable to all employees (including those who do
and health hazards to which employees under 
speak English or have limited comprehension of
improve 
communication

communication
8. Tailgate or toolbox safety meeting
their 
own real life experiences

by 
means of demonstrations, asking questions, discussing

means of demonstrations, asking questions, discussing 
ideas, and providing observations and
safe 
work practices and the safe use of tools, equipment, and

work practices and the safe use of tools, equipment, and 
chemicals
is

performed
Tunnels and Tunneling

Employees working on tunneling operations are exposed to to 
numerous hazards, including:

For help with your workplace training 1. Tunnel collapses;

2. Hazardous atmospheres; and

The specific Cal/OSHA training requirements that apply to each 
Employees working on pressurized tunneling 
worksite depend on the work activities in which

3. Explosive atmospheres.
The specific Cal/OSHA training requirements that apply to each

• Pipe-jacking and

have 
• Drill and blast
not previously received training.

• Excavation
-site hazards, such as

---

• Repair and maintenance

• Tunnel renovations

Employees who are exposed to or control the exposure of

A. Classifications: The M&T Unit is required to classify the

The Mining and Tunneling (M&T) Unit of Cal/OSHA enforces the TSOs, which include:

2. Potentially gassy;

1. Nongassy;

3. Gassy; and

4. Extra hazardous.

B. Pre-job safety conference: Before underground excavation 
may begin, the M&T Unit must conduct an on

c. Hazardous underground gas conditions.

C. Certified persons: Cal/OSHA requires 
the duties of gas tester or safety representative to be certified

2. A certified safety representative must direct the 
146 Cal/OSHA Pocket Guide for the Construction Industry | June 2019

1. A certified gas tester is required for the following operations:

recognize hazards, and must have the authority to correct 
unsafe conditions and procedures subject to the TSOs.

others to hyperbaric conditions shall be trained D. Diesel engines: Diesel engines are the only type of internal 
related physics and physiology, recognition of pressure combustion engine acceptable for use during tunneling operations, provided that the following requirements are

1. Cal/OSHA must issue a permit for diesel engine operation.

2. Conditions of the permit must be observed.

gas 
hazards of each tunnel or shaft. These classifications are:

hazards of each tunnel or shaft. These classifications are:
8422 (a), ( b)
1. Nongassy;
2.

5. A written record must be kept of the above readings.

6. PELs of the above air contaminants or any other contaminants must not be exceeded.

7. A certified gas tester must conduct the testing (see additional requirements in 8470).

may begin, the M&T Unit must conduct an on
safety conference with the project

E. Materials, tools, and supplies being raised or lowered with a 
crane or hoist shall be secured or stacked to prevent the

F. Licensed blasters: All blasting at tunnel sites shall be 
the persons performing 
the duties of gas tester or safety representative to be certified

Each year, numerous deaths from explosions, electrocutions, 
used 
8406
A certified safety representative must direct the 
safety and health program and must be on

Welding, Cutting, 
and Other Hot Work and non-ionizing radiation formed or released during welding, 
cutting, b

1. No welding is permitted in an explosive environment.

2. A written “hot work” permit is recommended whenever 
combustible environment may exist.

3. All combustible materials in the work area must

4. Suitable fire extinguishers that meet 
Standards must be provided in the work area.

5. Welding blankets, curtains, and pads shall be approved
for their intended use in accordance with

6. Employers must instruct employees on hot work
4848

7. Welders must be required to wear:

b. Appropriate foot protection. 3385

a. Non-flammable gloves with gauntlets.

c. Aprons (leather) and shirts that have sleeves

d. Helmets, hoods, and face shields suitable for

e. Suitable eye protection.

5. Gas cylinders must be stored and used as
razing, and other hot work.

4. Oxygen from a system without a pressure

2. Couplings must not disconnect by means of a straight
pull motion.

B. Gas welding is regulated as

f. Respiratory protection (as required).

g. Screens must be provided to protect the eyes of nonwelders from flash burns and ultraviolet light

razing, and other hot work.
a. Cylinders must be protected from all heat
must be 1740

b. Cylinders containing oxygen, acetylene, or fuel
4848 shall not be taken into confined spaces.

c. Acetylene and a f uel gas cylinders, including but not
combustible environment may exist. 4848 limited to welding and cutting fuel gas cylinders, 
be

be 
4848
and ANSI 
Standards must be provided in the work area.

Standards must be provided in the work area.
d. All gas cylinders in service shall be securely held insubstantial fixed or portable racks, or placed so 
for their intended use in accordance with s ection 
4848 (b)

4848 (b)
e. Cylinders must be handled in suitable cradles withtheir valve caps installed; they must never be lifted 
safety.

f. Cylinders must not be placed where they might form 
part of any electric circuit.

g. Oxygen cylinders in storage shall be separated fromfuel
and 
head 
(a),Valv 3382 (a)

h.(a),Valv 3382e stem wrenches must be left in place (a)
cylinders are in use.

welders from flash burns and ultraviolet light j. Backflow protection is required. 
3382 (b)

1. Cables in poor condition must not be used; no cable 
from 
1742 (a)

17423. Electrodes and holders that are not in use shall be (g) protected so they cannot make electrical contact 
oxygen 
1743(c)

4.regulation Defective equipment must not be used.
1743 (e)

---

D. Ventilation regulations for welding, cutting,
operations require that workers

1. Outdoor operations

Respirators are required for any operation involving

2. Indoor operations

Respirators shall be used when local ex

E. In enclosed spaces supplied-air respirators shall be used
when local exhaust ventilation is not an effective means for

F. Employer needs to include all potentially hazardous materials
involved in welding and cutting such as fluxes, coatings,coverings, and filler metals in the HAZCOM program.Employer a

Wood Preservative Chemicals

Wood preservatives that contain creosote, pentachlorophenol, 
inorganic arsenic, and chromates are widely used.

and brazing
Work Over or Near Water
operations require that workers ’ exposures to

fumes, gases, and vapors be reduced below PELs. 
A. At locations where there is danger of drowning, employees
shall use the following safety devices unless protected by

1. Personal Flotation Devices
beryllium, cadmium, lead, or mercury. For other

3. Lifesaving

beryllium, cadmium, lead, or mercury. For other 
2. Ring b

B. Ramps used by vehicles to access

C. When employees can’t step safely from a wharf, float, 
haust or
mechanical ventilation is not feasible or able to prevent
exposures that exceed limits specified in

exposures that exceed limits specified in 
D. All means of access to wharves, floats, barges, and boats
-air respirators shall be used shall be adequately illuminated for their full length.
when local exhaust ventilation is not an effective means for

when local exhaust ventilation is not an effective means for 
E. Decks and other working surfaces of barges shall 
preventing potentiallymaintained in a safe condition

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List of Acronyms

ACCM: asbestos

ACGIH: American Conference of Industrial Hygienists

ACM: asbestos-containing material

AEGC program: assured equipment grounding conductor program

ANSI: American National Standards Institute

ASSE: American Society of Safety Engineers

ASTM: American Society for Testing and Materials

ATSSA: American Traffic Safety Services Association

$ ^{\circ} \mathrm{C} $ : Degree Celsius temperature scale

Cal/OSHA: California Occupational Safety and Health Administration

Ca PE: California Registered Professional Engineer

dBA: a unit of sound level as measured on the A-scale of a standard sound level meter

CARB: California Air Resources Board

CASOs: Compressed Air Safety Orders

˚F: Degree Fahrenheit temperature scale

CAZ: controlled access zone

152 Cal/OSHA Pocket Guide for the Construction Industry | June 2019

eTool: electronic educational products for safety and health

ESOs: Electrical Safety Orders

CCR: California Code of Regulations

FP: fall protection

- containing construction material

CSHIP: Construction Safety and Health Inspection Project

- containing construction material 
ACGIH:

cu. ft.: cubic feet

CO2: carbon dioxide

cu. yd.: cubic yard

CSOs: Construction Safety Orders

ACGIH: American Conference of Industrial Hygienists

GHS: Globally Harmonized System

GISOs: General Industry Safety Orders

HAZCOM program: hazard communication program

HEPA: high-efficiency particulate air

HP: hearing protection

IDLH: immediately dangerous to life or health

IIPP: Injury and Illness Prevention Program

MSHA: Mine Safety and Health Administration

NFPA: National Fire Protection Association

NIOSH: National Institute for Occupational Safety and Health

ISEA: International Safety Equipment Association

LAZ: limited access zone

NOx: Oxides of Nitrogen

in.: inches

psf: pounds per square foot, unit of pressure

OPU: order to prohibit use

PACM: presumed asbestos-containing material

PEL: permissible exposure limit

psi: pounds per square inch, unit of pressure

PAT: powder-actuated tool

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 153

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RMI: repetitive motion injury

SAR: supplied-air respirator

SDS: safety data sheet

SO: safety order

sq. ft.: square feet

T8 CCR: Title 8 of the California Code of Regulations

TSOs: Tunnel Safety Orders

TWA: time-weighted average

Index

V: volt, unit of electric voltage

The s ubject headings ar e provided i
safety data sheet

safety data sheet
SO: safety order
–101,13
sq. ft.: square feet

sq. ft.: square feet
Access, 5–6
aerial devices, cranes, 
elevators,

Administrative Requirements, 7-11 certification,7,11 licensing,10-11 notification,7,8,9 permitting,7,9,10 posting,7 recordkeeping,7-8 registration,7,9-10

Aerial Devices and Elevating Work Platform Equipment, 11-12 aerial devices,11 elevating work platform,11 fall protection,11

Airborne Contaminants and Dust,12-13 airborne contaminants,12-13 dust,12-13

Air Compressors,13 permit,13 warning signs,13 portable air compressors,13

Airless spray guns,134 Annual permit 8,38

Asbestos, 8-10, 12, 13-18 certification,15 monitoring,15-16 notification,9,15 permissible exposure limit,15 registration,15 respirator protection,16 training,15

Augers,143

---

Backup alarm, 88
Band saws, 141- 142
Barricades, 39, 41, 4
body protection, 1 8
Blasting (Explosives), 1 8– 20
license, 1 8, 20
storage, 19
156 Cal/OSHA Pocket Guide for the Construction Industry | June 2019

Circular saws, 138, 1 40, 1
Clean-up, 7
9, 8 7, 90, 9 6, 12 9, 1 43
Benching, 58, 59, 60, 61
Blasting (Abrasives/Sand), 1
transportation, 1 9
Boatswain’s chair, 66, 12
Body protection,
Covers (floor and roof openings), 50, 76, 117
Cal/OSHA Pocket Guide for the Construction Industry |

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Electrical,41-46 arc,42,43 general requirements,41-43 GFCI,44 grounding,42,43-45 high voltage,42-43 lock-out procedures,45 low voltage,41 minimum safe distances,45 protective equipment,41,42 warning signs,41,45 wiring methods,43 Elevating work platform,6,11

Elevators, Lifts, and Hoists, 4
c apacity, 4
1–32
general requirements, 30, 31
inspection, 32
operation,

---

Explosives, 1 8–
Eye protection, 99

Fire Protection and Prevention,68 equipment,68 extinguisher,68 training,68 water supply,68

Flaggers, 69-70 apparel,69-70 high visibility apparel,69-70 traffic control,69-70 training,70 warning signs,69

Flammable and Combustible Liquids,70-71 closed containers,70-71 HAZCOM,71 leakage,70 storage,70,71 transportation,71 usage,70-71

Flexible cords, 43
Float scaffolds, 6 6
Foot protection, 10
Fall Protection, 63 –68 
controlled access zone, 66 
fall distance, 
fall protection plan, 
lsework, and Vertical Shoring, 73
access, 
gn loads, 74 des
design, 73 –74
erection, 74
fall protection, 
ng, 10, 51, 65
Fumes, 12, 40, 48, 78
Gas, 
vator shaft openings, 77 
fall protection, 
floor/roof openings, 76
Guards, 42, 96, 138, 14 0–1 41
Hand protection,
Hand s
27
Cal/OSHA Pocket Guide for the Construction Industry | June 2019 161

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Haulage and earth-moving equipment, 88

Hazard Communication Program (HAZCOM), 7

Heat Illness Prevention,79-87 emergency response,81,84-86 fainting,79-80 heat cramps,79-80 heat exhaustion,79-81,86 heat rash,79,80 heat stress,86 heat stroke,79,81,86 high-heat procedure,84 shade,81,82-84,86 symptoms,80-81 training,85-86 water,81-84,86 written procedures,81-82

Housekeeping/Site Cleaning, 90 ground areas,90 storage areas,90

Heavy Construction Equipment, 87-89 flaggers, 87 haulage and earth-moving equipment, 88-89 safety requirements, 88-89 seat belts, 87-88 High voltage, 8,12,22,28,32,42,45-46 Highlift trucks, 8 Hitches, 129-130 Hoists, 6,46 Horn, 33,72 Horse scaffold, 122,131 Hot Pipes and Hot Surfaces, 89-90 Hot work 147-148

work surfaces, 90
Hazard Communication Program (HAZCOM), 7 Impalement, 22–25
labeling, 7 7–79
Industrial trucks, 
list of hazardous substances, 77

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Load weighing device,

Lock-out/Block

Machine Guarding,106 Masonry,12,22,139 Mists,40,78

Multi-Employer Worksites,106-107 controlling employer,107 correcting employer,107 exposing employer,106 creating employer,106

body protection, 107
eye protection, 10 7
hand/foot protection, 10

energy control procedure, 
8
hearing protection, 10 8
respiratory protection, 10

104 – 105
extension tools, 104
notifying, 105
tagging, 
8– 10 9
Pile Driving, 10 9–110
fall protection, 10

Cal/OSHA Pocket Guide for the Construction Industry | June 2019 165 dust, 18, 40
lead, 100 –101
program, 7, 16, 108 –109
silica, 133
welding, 40, 101, 148
Rollover protection, 87 –88
Roofing Operations, 1 13 –11
fall protection requirements, 1
Safety, 4–5, 10, 13, 21, 63, 64, 65, 67, 6992, 98, 101, 127, 143, –70, 87, 9
145, 146
apparel, 69– 70, 8 7, 1 43
conference/meeting, 10, 
factor,

plat forms, 11 8–1 29, 131

plat forms, 11

8–1 29, 131
prohibited scaffolds, 123

prohibited scaffolds, 123
welding, 40, 101, 148

0–
21, 91, 145, 146

21, 91, 145, 146
64
harness, 127
monitoring system, 6

monitoring system, 6 7
nets, 63, 65
precautions,

Stairways,133-134 illumination.134

Structural steel, 
Supplied

9, 4 9
Supplied-air respirators, 1

injury/liness records,135
responsibility,134-135
training,135

drinking fountain,
hower, 136
Cal/OSHA P ocket Guide  for the Construction Industry |

fountain, 13 7
toilet facility, 13
washing 
Cal/OSHA P ocket Guide  for the Construction Industry |

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Tools and Equipment, 13

Traffic Control,143 employees on foot,143 flagger,143 high visibility apparel,143

hot work permit, 14 8
respiratory protection, 14
–142
chain saw 142
Wells, 58, 61 –6 2
circular saw, 1 40, 1 41
Window j concrete a ck scaffold, 1- finishing tool, 131
in g method, 4 3 W
Wood P reservative C

Training,143-145 effective training,143-144 tailgate/toolbox meeting,145 training requirements,144-145

Trenching, 10, 48, 53-58

Tunnels and Tunneling,145-147 certified persons,146-147 classification of gas hazard,146 diesel engine,147 licensed blaster,147 pre-job safety conference,146 safety representative,146 ventilation,147 Vapors,12,40,62-63,78,150 Ventilation,17,28,40,48,62,70,112,117,147,150 Vertical shoring,10,22,52,73,134 Warning device,88 Warning signs,8,13,17,20,41,45,69,74,78,87,99,101,139,143 Water-drinking,81-84,86,136-137

Welding, Cutting and Other Hot Work, 147-150 arc welding,149 gas cylinder,149 gas welding,148-149

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Division of Occupational 
Safety and Health (DOSH) 
Headquarters

1515 Clay Street, Suite 1901, Oakland, CA 94612

Phone (510) 286-7 000

Internet www.dir.ca.gov/dosh/dosh1.html

CAL/OSHA ENFORCEMENT
To report workplace accidents and file complaints, contact 
the nearest Cal/OSHA Enforcement Office listed below:

Regional Offices

Santa Ana
(714) 558-4300

High Hazard Unit
Santa Ana: (714) 567-7100
Oakland: (510) 622-3009

District Offices

Long Beach
(562) 506-0810

American Canyon
(707) 649-3700

Fresno
(559) 445-5302

Fremont
(510) 794-2521

Los Angeles
(213) 576-7451

Sacramento
(916) 263-2800

San Diego
(619) 767-2280

San Bernardino
(909) 383-4321

Van Nuys
(818) 901-5403

Monrovia
(626) 239-0369

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Cal/OSHA 
Consultation Services Branch

toll free 1-800-963-9424

internet www.dir.ca.gov/dosh/consultation.html
 InfoCons@dir.ca.gov

email InfoCons@dir.ca.gov

1 Sacramento

Northern California 
(916) 263 - 0704

2 Oakland

San Francisco Bay Area 
(510) 622 - 2891

3 Fresno

Central Valley 
(559) 445 - 6800

4 Van Nuys 
San Fernando Valley 
(818) 901 - 5754

5 La Palma

La Palma, Los Angeles Metro Area,
Orange County
(714) 562 - 5525

6 San  BBerna rdino  Inyo and Riverside Counties

San ernardino,
(909) 383 - 4567

Worker Information Hotline For telephone numbers 
and website addresses to help workers with safety 
and health and other workplace concerns call DIR’s 
Toll Free number: 1-866-924-9757

7 S an Diego

Imperial and San Diego Counties 
(619) 767 - 2060
