QES QUICK ERECT SCAFFOLDsafety rules and instructions #910r5

2General Safety Rules

1. Itshallbetheresponsibilityofalluserstoreadandcomplywiththefollowingruleswhicharedesignedtopromotesafetyintheerectingandthedismantlingofscaffoldingsystems.Theserulesdonotpurporttobeallinclusivenortosupplantorreplaceotheradditionalsafetyandprecautionarymeasurestocoverusualorunusualconditions.Iftheserulesconflictinanywaywithstate,local,provincialorfederalstatuteorregulationsaidstatuteorregulation,shallsupersedetheserulesanditshallbetheresponsibilityoftheuserstocomplytherewith.

2. Asurveyshallbemadeofthejobsiteforhazards,includingbutnotlimitedto,untampedearthfills, ditches,debris,tensionwires,unguardedopeningsorhazardousconditionscreatedbyothertrades.

3. Onlyanexperiencedandqualifiedsupervisorshallbeutilizedintheerectinganddismantlingofsteel scaffolding.

4. Donotclimbrunners,bearers,ordiagonalbraces.

5. Usecautionwhenerectingfree-standingtowers.Preventtippingbyguyingorbracing.Referto installationinstructionsforproperuseofcomponents.

6. Useplywood,planking,walkways,orladdersduringtheerectionofscaffoldingequipment.Plankmust conformtoOSHAspecifications.

7. Erectinganddismantlingofscaffoldingshallbeaccomplishedbyausertrainedinthistypeof constructionoperationandawareofthehazardsconnectedwitherectinganddismantling.

8. Useshockabsorbinglanyards.

9. Atcustomers'request,HarscoInfrastructureAmericaswilldiscussanyaccessoriesnotavailabledirectlyfromHarscoInfrastructureAmericas.

10.Donotmakeunauthorizedchangesorsubstitutionsofequipment.AlwaysconsultwithHarscoInfrastructureAmericaspriortomakingchangesnecessitatedbyjobsiteconditions.

11.DonotmakeunauthorizedmodificationstoanyequipmentsuppliedbyHarscoInfrastructureAmericas.

INTHEEVENTOFACONFLICTBETWEENTHESEGENERALSAFETYRULESANDTHECONTRACTENGINEERINGDRAWINGS,THECONTRACTENGINEERINGDRAWINGSSHALLTAKEPRECEDENCE.

31. Serious injury may result from improper erection oruseof scaffoldingequipment.ErectorsandusersmustbefamiliarwithandfollowSafePracticeandthe InstructionsandSafetyRules containedherein.

2. Follow OSHA and all other governmental regulations, codesandordinancespertaining toscaffolding.

3. Inspect all equipment before using. Neveruseanyequipmentthatisdamaged,hasbeenaltered ordeterioratedinanyway.

4. Keep all equipment in good repair.Donotuseheavilyrusted equipmentasitsstrengthis unknown.

5. Inspect erected scaffolds regularlytobesurethatthey aremaintainedinsafecondition andthatscaffoldconnectionshave notloosened.

6. Consult your scaffolding supplier when in doubt. Never take chances.

7. Assurethatthesurfaceon whichthescaffoldistobeplaced isadequatetosafelysupportthe intendedloads.

8. Provideadequatesillsforscaffold postsanduseadjustablebases tolevelthescaffold. Useadjustableswivelbases wheresupportingsurfaceorsill issloping.

9. Plumb,levelandsquarethe scaffoldATTHEBASECOLLAR LEVEL,thenproceedwiththe erectionmaintainingthescaffold plumbandsquareasitisbuilt-up.

10.Fastenallwedgeandother connectionssecurely.

11.Thetieingofthescaffoldtothe structureisofgreatimportanceto thestabilityandsafetyofthe scaffold.Assurethatthestructure towhichthescaffoldisanchored iscapableofsafelysupportingall loadsimposedbythescaffold.

12.Wallscaffoldsmustbebutted andtiedtoadequateanchors securedtothestructureateach endofthescaffoldandatleast every30'horizontally.To assurethestabilityofthescaffold duringerectionanddismantling, placethefirstleveloftiesand buttsattheclosesthorizontal membertoaheightfour(4)times thewidthofthescaffold.Tiesand buttsaretoberepeatedvertically every20'orlessforscaffolds 3'wideorlessandevery26' orlessforscaffoldsgreater than3'wide.Also,installties andbuttsattopsofscaffolds, whichextendmorethanonelift abovetheprevioustieposition.

13.Stepunittowersmustbetied, andbuttedatleastevery13' vertically.

14.Free-standingscaffoldsother thanwallscaffoldsshouldbetied andbuttedsimilarly,orotherwise stabilizedasappropriatetothe conditionsthatpertainthereto, recognizingthatthestabilityofthe scaffoldisessentialtothesafety ofthescaffold.

15.Whenscaffoldsaretobepartially orfullyenclosed,specific precautionsmustbetakento ensurefrequencyandadequacy oftiesandbuttsattachingthe scaffoldtothestructuredue toincreasedloadingconditions

resultingfromtheeffectsof windandweather.Ensurethat thescaffoldingcomponentsto whichthetiesandbuttsare attachedarecapableofsafely sustainingtheadditionalloads resultingtherefrom.

16.Ifatieorbuttmustberemoved foranyreason,alternateor substitutetiesandbuttsorother methodsmustbeusedtoensure thecontinuedstabilityofthe scaffold.

17.Ateverytielevel,installcontinuous horizontaldiagonalbracingforthe fulllengthofthescaffold.

18.Installdiagonalbracingasshown intheaccompanyingInstructions inbothlongitudinalandtransverse directionsofthescaffold,andon allfacesoffreestandingscaffolds.

19.Installguardrails,midrails,and toeboardsatallopenings,open sidesandendsofeveryworking platform.Assurethatguardrails, midrails,andtoeboardsarein placewheneverascaffoldlevelis planked.Guardrailpostsmustbe securedtobracketsorposts belowbypinningorbolting.

20.Allscaffoldsmustbeequippedwith suitableclimbingladdersorstep unitstoprovidesafeandproper accesstoworkinglevels.Use cautionandassurethatplacement oftheladderswillnotresultin tippingoverofthescaffoldwhen beingclimbed.Wheneverpossible, placesuchladdersontheinsideof freestandingandrollingscaffolds. Donotclimbrings.

21.Neveruseladdersormakeshift devicesontopofscaffoldsto increasetheirheight.

QES Scaffolding Safety Rules #910R5

4QES Scaffolding Safety Rules #910R5(continued)

22.Powerlinesnearscaffoldsare dangerous.Useextremecautionandconsultthepowerservice companytohavethelines de-energized,insulatedor otherwiserenderedsafe.Never allowanyinstallationoruseof scaffoldsuntilthisisdone.

23.Whereupliftduetowindorother externalforcesmayoccur,scaffoldpostsshallbepinnedorbolted togethervertically.

24.Whenerectedscaffoldsaretobe movedbycraneassurethat:

a. Allverticaljointsofthescaffold areattachedandsecuredbybolts andnutsorotherfastening devicesofadequatestrength;

b. Allotherconnectionsofthe scaffoldaretightandsecure;

c. Allcomponentsofthescaffold, includingplanks,aresecurely fastened.

25.Propercareandprecautionsmust betakentopreventtippingofthe scaffoldwhenanycantileversare used.

26.QESsidewallbracketsare designedtoprovide1',2and3 widecantileversfromthefaceof thescaffold.Bracketsareforlight dutyuseonlyandmustbeusedonlytosupportmenandplanking. Theymustnotbeusedtosupportmaterials.BracketsmustbeproperlyguardrailedinaccordancewithSafetyRuleNo.19above.AlsoseeRuleNo.25above.

27.Nevercantileverahorizontal memberwithonlyoneendsecured foruseinlieuofabracket,unlessitisalsosecurelybracedwithtubeandcouplersdiagonallyfromthe

endofthecantileverbacktothe scaffoldpost.

28.For rolling scaffolds follow these additional safety rules:

a. Neverriderollingscaffolds.

b. Removeallmaterialsand equipmentfromthescaffold beforemoving.

c. Lockcasterbrakesatalltimes whenthescaffoldisnotbeing

moved.

d. Allpostsandguardrailpostsmust besecurelypinnedorboltedto eachother.Castersmustbe securedtopostsoradjustable bases.

e. Donotattempttomoverollingscaffoldswithoutsufficient help.Watchoutforholesor floorobstructionsandfor overheadobstructions,including powerlines,energizedcraneways andotherhazards.

f. Themaximumplatformheightofarollingscaffoldmustnotexceedfour(4)timesthenarrowestbasedimension.Checklocal/StateOSHAregulationsforotherheight/baselimitationssuchas3:1inCalifornia.Complywiththeseregulationsbyappropriatelywideningand/orlengtheningthescaffoldatthelowerlevelssothattheaboveproportionsarenotexceeded.Ifthebasedimensionscannotbeincreased,extremecaremustbetakentosecurethescaffoldfromtipping;itmustbeguyed,ortiedtoasolidstructureandmaintainedinastabilizedconditionatalltimessothatitcannottipoverwhilesupportingpersons,whilebeingmovedorwhilebeingerectedordismantled.

g. Ifrollingscaffoldsareusedoutdoors,caremustbetaken

toensurethattheycannotbecomeunstableduetowindorotherconditions.

h. Donotextendscrewlegsmore than12"onrollingscaffolds.

i. Installdiagonalbracingonallsides ofrollingtowersforthefullheight ofthetower.Installhorizontal diagonalbracesatthebase andatevery20'heightinterval measuredfromtherollingsurface.

23.Platform planking:a. Onlyuselumberthathasbeenproperlyinspectedandgraded asscaffoldplankorfabricated metalplank.

b. Scaffoldplankmusthaveatleast12"ofoverlap,andshallextendnot lessthan6"ormorethan12" beyondthecentersoftheir supports(bearers).

c. Single-spanplanksmustbecleatedatbothendstopreventplanksfromslidingofftheirsupports,or,mustbeofaprefabricatedtypehavingendhookstoseatoverbearersandrestraintheplanksfrommovement.

d. Secureplankingtoscaffoldwhennecessary.

e. Plankingmustbeplacedacrossthefullwidthofscaffoldplatforms.

24.Duetodifferencesindesign andfit,donotintermingleQES componentswiththoseofother scaffoldsystems.

25.Equipscaffoldswithwiremeshorsimilarscreens,lighting,dangerlightsorbarricades,signsandgateswhenrequiredforsafepracticeandtocomplywiththerequirements oflaw,governmentalregulations andcodes.

5Allowable Loads for Typical Wall Scaffolds up to 125' High and OSHA and Maximum Permissable Spans for 2 x 10 Wood Scaffold Plank.

1. Thescaffoldloadingtableisbasedonworkinglevelsfullyplankedwithadditionalnon-workingplankedlevelsasindicated.

2. Allloadsonscaffoldsandplanksaretobeevenlydistributedandareshownaspoundspersquarefoot(PSF). Placeconcentratedmaterialloadscarefullysothattheplankandscaffoldarenotoverloaded.

3. Maximumpermissiblespansfor2x10woodplanks,belowisextractedfromOSHA Regulations.Whenusingsolidsawnplank,donotexceedtheseallowableplankloadsandspans.For nominalsizelaminatedplank,usethefullthicknessundressedtable.Whenfabricatedplanksorplatforms areused,consultwiththemanufacturerforallowableloads.

4. OSHArequiresthatscaffoldsover125highbedesignedbyaprofessionalengineer.

5. Forfurtherinformationrelativetospecificscaffoldinginstallationsthatdonotfallwithintheseguidelines, consultHarscoInfrastructureAmericas.

FullThicknessUndressedLumber

NominalThicknessLumber(1)

Workingload(PSF)

PermissibleSpan(Ft.)

255075

1086

2550

86

(1)Nominalthicknesslumbernotrecommendedforheavydutyuse.

MAXIMUM PERMISSABLE SPANS FOR 2x10 WOOD PLANKS

OSHARegulation1926SubpartLApp.A1.(b)(c)

DO NOT EXCEED THE ALLOWABLE LOADINGS SHOWN

6Allowable Scaffold Heights for Medium Duty Scaffolds (50psf) Based on Bearer Width

DO NOT EXCEED THE ALLOWABLE LOADINGS IN THE ABOVE TABLES

Thesescaffoldloadingtablesapplyonlytoscaffoldbutted,tiedandbracedasshownonPage10.

1. Thesescaffoldloadingtablesarebasedonworkinglevelsfullyplankedwithadditionalnon-workingplanked levelsasindicated.

2. Allloadsonscaffoldsandplanksaretobeevenlydistributed.Usedunnageand/orspreaderstodistributeanyandallconcentratedloads.

3. Plankedlevelsarecalculatedtoincludemidrailsandguardrails.

4. OSHArequiresthatscaffoldsinexcessof125'bespecificallydesignedforthejobbyaprofessional engineer.Incasesmarkedwith+,greaterheightsarepossible.ConsultHarscoInfrastructure'sEngineering Departmentforassistance.

5. Wheredeviationsfromtheabovearerequired,consultHarscoInfrastructure'sEngineeringDepartment.

6. Thischartdoesnottakeintoaccounttheuseofsidewallbrackets.Ifsidewallbracketsarerequired,consult HarscoInfrastructure'sEngineeringDepartment.

7. Thischartappliestowallscaffoldsonly,nottosinglescaffoldtowersorrollingtowers.ConsultHarscoInfrastructure'sEngineeringDepartmentfortheseapplications.

NUMBEROF

WORKINGLEVELS

NUMBEROFADDITIONALPLANKEDLEVELS

RUNNERLENGTHINFEET

1at50#/sq.ft.

1at50#/sq.ft.+1at

25#/sq.ft.

1at50#/sq.ft.

1at50#/sq.ft.+1at

25#/sq.ft.

6

0

ALL

ALL

125+

125+

125+

125+

125+

125+

125+

105.5

125+

125+

112

86

125+

125+

92.5

66.5

NUMBEROF

WORKINGLEVELS

NUMBEROFADDITIONALPLANKEDLEVELS

RUNNERLENGTHINFEET

56

1at50#/sq.ft.

1at50#/sq.ft.+1at

25#/sq.ft.

1at50#/sq.ft.

1at50#/sq.ft.+1at

25#/sq.ft.

6

0

ALL

ALL

125+

125+

125+

86

125+

125+

99

73

Bearer Width-3 Ft. Bearer Width-4 Ft.

5678

7Safe Allowable Loads for Bearers and Trusses

QES PART NUMBER

DESCRIPTION

MAXIMUM UNIFORM LOAD

(LBS./FT.)

ALLOWABLE CONCENTRATED

LOAD AT CENTER (LBS.)

ALLOWABLE BEARER DESIGN LOAD IN #/SQ. FT.

6 RUNNER 7 RUNNER 8 RUNNER 10 RUNNER

30

53

19

45

31

24

38

19

18

13

67

24

56

39

30

48

25

22

16

38

76

27

64

45

35

55

28

25

18

43

88

32

75

52

41

64

33

30

22

50

800

480

1125

940

850

1500

980

1980

1334

600

533

192

450

312

243

384

196

177

130

300

QH3

QH5

QT5R

QT6R

QT7R

QT8P

QT10

QT16

QT20

QH4

3 Bearer

5 Bearer

5 Rod Truss

6 Rod Truss

7 Rod Truss

8 Pl. Truss

10 Pl. Truss

16 Truss

20 Truss

4 Bearer

DO NOT EXCEED THE ALLOWABLE LOADINGS SHOWN IN THE ABOVE TABLES

8Typical Installation Sequence

FIG. 1LAYOUT Setout4adjustablebases(1)attheirintendedpostpositions. Alwayscommenceathighestpointofgroundwithasmallamountofscrewlegadjustment. Layoutthepartsshownalongsidethebasesforthefirstscaffoldtowerorsection. Place4basecollars(2)overthescrewlegs;thesewillformthebase. Orientthelockingringsof(2)sothatoneoftheslotsisalignedinthebearerdirection. AlsoseeFig.3.

FIG. 2BASE CONSTRUCTION Connect2bearers(3)and2runners(4)tothe4lockingringsonthebasecollars. Slidethewedgesof(3)and(4)downintothealignedlockingringslotsDONOTTIGHTENWEDGESATTHISTIME. Placehorizontaldiagonalbrace(5)betweencornerpostsasshown.DONOTCONNECTTHISBRACEitisusedatthistimeONLYtosquarethebaserectangle.Alternativelyuseatemplatetosquarethebase. Useaspiritlevelonthehorizontalsandlevelthemaccuratelybyadjustingthescrewlegs.Themorecarefullythisisdone,themoreeasilysubsequenterectionwillbeaccomplishedasthescaffoldisbuilt-up. Nowtapwedgesintosecureengagementinthelockingrings;thewedgedesignmakesafirmandrigidright-angleconnection.Assurewedgeiscenteredinslot. Removehorizontaldiagonalbrace(5)andretainforfutureuseatatielevel. Byaddingsuccessivepairsofscrewlegs(1)andbasecollars(2)andrepeatingtheabovesteps,completethewholeofthebasebeforeextendingthescaffoldvertically. Extendthescrewlegsprogressivelytoretainthebasehorizontalslevelwiththefirstsection.Screwlegshave20ofadjustment.Onprogressivelyslopingground,once19ofadjustmentisreachedsetthenextpairofbases19lower(oneringspacing)thanthepreviousones. Thismethodhastheadvantageofcompletelylayingoutthebaseandtakingcareofunevenbaseproblemsbeforeinstallingtheuppermembersofthescaffold,whichwouldbemoredifficulttochangeatalatertime. SeeFig.5forlargebase-levelvariations

READ AND COMPLY WITH SAFETY RULES ON PAGES 2, 3.

KEY COMPONENT CODE Part No. followed by spacing/size in feetAdjustableBase(20adjustment)

BaseCollar

Bearer(horizontal)&Guardrail

Runner(horizontal)&Guardrail

HorizontalDiagonalBraceGooser(scaffoldwidthxbaysize)

Side/EndDiagonalBrace(6-6HighxWidthorbaysize)

Post/GuardrailSupports(height,feet)

DoubleLockingCasterattachesto(1)

QL20

QLC

QH___

QH___

QG___

QD___

QP___

QL10

1.

2.

3.

4.

5.

6.

8.

7.

ThispublicationcontainsstandardinstructionsforthebasicmethodsofinstallingtheQESScaffoldingSystems.TheseSafetyRulesandInstructionscovergeneralizedsituationsonlyanddonotpurporttobeall-inclusive,nortosupplantorreplaceotheradditionalsafetyandprecautionarymeasuresthatmaybenecessarytocoverthemanyusualandunusualconditionsthatmaybeencounteredduringitsinstallation,useandremoval.Theyarenotintendedtoconflictwith,orsupersedetherequirementsofOSHAoranyothergovernmentalregulations,codes,orordinances;referencetosuchspecificprovisionsoflawshouldbemadebytheuser.

Fig.2

Fig.1

9a B

cd

d

e

fi

FIG. 5 SCAFFOLD ON VARYING GRADE Whenthescaffoldhastoaccommodateasuddenchangeinlevelormorethanthe20normaladjustmentofascrewlegitisnecessarytomakeastep-downasshownabove.

Startleg(B)usinganadjustablebase(1)withminimumadjustment,abasecollar(2)andanewpost(7).Adjustthescrewlegsothatthepostslockingringsareapproximatelylevelwiththosetotheprecedingpost.Connectarunner4at(C). Accuratelylevelthisrunner,tightenthewedges,andrepeatthissequencefortheoppositefaceofthescaffold.Connectbearers(3)atpositions(D)andattachadiagonalbraceat(F).

Completealltheotheruppermembersattachingtopost(B)beforecontinuinginsimilarfashionalongthescaffoldfrompost(E)onwards.

FIG. 4 FIRST SECTION Place4posts(7)either6-6or9-9long,verticallyintothebasecollars(2)andorienttheirlockingringsapproximatelythesameasthoseonthebasecollars.

Jointcouplingsonthepostsmustpointup.

Addthesecondlevelofhorizontals(3)and(4);thenormalverticalliftincrementis(4)19lockingringspaces(6-6).InsertthewedgesinthelockingringslotsbutDONOTTIGHTENYET.

Installasidediagonalbrace(6)inthefirstbayontheoutsidefaceofthescaffoldbetweenthesamelockingringsthatthetwolevelsofrunnersareattachedto. Continuetobuild-upthescaffold,adding2postsatatimeconnectedwithrunnersandbearersatthesamelevelsasthefirstsection,anddiagonalsidebracesatlongitudinalintervalsasspecifiedinFig.7B. Addsuccessivelevelsofposts,connectingthesewithhorizontalsanddiagonalsinthesamemannerasbefore.SeeFigs.7through9fortypicalmethodsofconstruction.

Typical Installation Sequence (continued)

FIG 6A STANDARD RUNNER METHODAlwaysinstallguardrails,midrailsandtoeboardsalongallopensidesandendsofplankedplatforms,usingbearers(3)andrunners(4)asguardrailing.

FIGS. 6 TYPICAL SCAFFOLD PLATFORMS

ACCESS EQUIPMENT HAS BEEN OMITTED FOR CLARITY. SEE PAGE 11, 12, 14, 15 AND 16 FOR DETAILS. READ AND COMPLY WITH SAFETY RULES ON PAGES 2, 3.

note: no runner Here

l

l

ll

l

l

p

p

p

p

m

m

m

m

m

o

o

FIG. 3LOCKING RINGIneachlockingringareeight(8)slots.Duringinitialassembly,alignthelockingringofbasecollarandthoseonthepostssothatoneoftheslotspointsintheintendedbearerdirection;twoslotsatrightanglestoitwillpointintherunnerdirectionautomatically.Theotherslotsarefortheconnectionofdiagonalbraces.Anyslotcanbeusedtostartthescaffold.

Fig.3

m

l

l

l

pp

p

pk

k

k

m

m

mo

o

Fig.4

Fig.5

Fig.6

Fig.6A

10

Wall Scaffolds

FOR OPEN SCAFFOLDS ONLY. CONSULT HARSCO INFRASTRUCTURE AMERICAS FOR ENCLOSED SCAFFOLDS.ACCESS EQUIPMENT HAS BEEN OMITTED FOR CLARITY.

SEE PAGE 11, 12, 14, 15 AND 16 FOR DETAILS. READ AND COMPLY WITH SAFETY RULES ON PAGES 2, 3.

FIG. 9 - PLAN VIEW - TYPICAL WALL SCAFFOLD

FIG. 7B - TYPICAL ELEVATION - STANDARD CONSTRUCTION SCAFFOLD

install HoriZontal diaGonal Braces and continuously at all ancHor leVels

tie/Butt tie/Butt tie/Butt

tie/Butt

i.e. 4 x 7 Bays or 3 x 8 Bays or 3 x 10 Bays

tie/Butt ancHoraGe Positions are MaXiMuM 30 aPart

Guardrail mMidrail m

tie/Butt leVeltyPtyP

tie/Butt leVel

tie/Butt

FIG. 7A - CROSS SECTION AT TIE/BUTT LOCATIONS STANDARD CONSTRUCTION

tHis BracinG aBoVe and BeloW ancHoraGe Positions only.

26 M

aX. for 4 W

ide (min.)

see safety rule

(see safety rule #17)

(see safety rule #17)

#12

20 M

aX. for 3 W

ide (min.)

install Guardrails,

Midrails and toeBoards

at in

terMediate HeiGHt

Pla

tfo

rM leVels

.

MaXiMuM 3 Bays

BetWeen Braced Panels o

MaXiMuM 3 Bays

BetWeen Braced Panels o

n n

m

m

m

m

m

mmm

m

n n n n n n n

o

oo

o

o

o

o

o

o

oo

11

FIG. 11 INDEPENDENT FREE STANDING SCAFFOLDThemethodofassemblyisgenerallythesameasforawallscaffold,withthefollowingimportantexceptions:a. Allbaysonallfoursidesandendsmusthavediagonal bracesinstalled(seeSafetyRuleNo.18).b. Iftopscaffoldplatformistobemorethan4timesthe normalscaffoldwidthof3feetor4feet,followSafetyRule No.28(f)andwidenthebase.(InCalifornia,heightisnot toexceed3timestheminimumbasewidth).c. FollowSafetyRulesNos.14and20andassurethatscaffold cannottipwhilebeingclimbedorused.

FIG. 10 TYPICAL QES ROLLING SCAFFOLDEnsurethatallSafetyRulesforrollingtowersarefollowedinadditiontoallotherpertinentSafetyRules.

Round Vessel Scaffolds

ACCESS EQUIPMENT HAS BEEN OMITTED FOR CLARITY. SEE PAGE 12, 13, 14, 16 AND 17 FOR DETAILS. READ AND COMPLY WITH SAFETY RULES ON REAR PAGES 2, 3.

Dependingonvesseldimensions,itmaybenecessarytouseTubeandCouplerstoclosethecircleinonebay

Forroundvesselsithelpstoconsiderscaffoldasaseriesoftowers,connectedtogetherbyrunners(4) acrossthebaysbetweenthetowers.Dependingonvesseldiameterandmethodused,someoftheserunners maybetubeandcouplertoobtainthenecessaryspacing.

see safety rule #28 (i)

FIG. 8A - PLAN VIEWTYPICAL CONSTRUCTION FOR ROUND VESSELS

FIG. 8B - PLAN VIEWALTERNATE CONSTRUCTION FOR ROUND VESSELS

12

Stationary Scaffolds

Notes:

1. Installandusestepunits(SeePage14),attachableclimbingladders(SeePage16)orotherappropriate laddersforaccesstoallplatforms.

2. Sidewallbracketsmustbeseatedproperlyandsecurelytopostsandlockingrings;assurebrackets donotbecomeunseatedwhenplanksareplacedonthem(SeeFig1).

3. Installguardrailprotectionatendsofsidewallbracketruns(SeeFig2).

4. InstallplankinginaccordancewithSafetyRule#29,(Page3).

5. Installguardrails,midrails,andtoeboardsalongallopensidesandendsofworkingplatformsasrequired byOSHAorlocalcodes.

6. Whenscaffoldsaretobepartiallyorfullyenclosed,additionalspecificprecautionsmustbetakentoassure frequencyandadequacyoftiesattachingthescaffoldingtothebuildingbecauseofincreasedloadconditions resultingfromeffectsofwindandweather.Thescaffoldingcomponentstowhichthetiesareattachedmust alsobecheckedforadditionallateralloadsimpartedthereto.

7. Bracingrecommendationsshownaboveapplytounenclosedscaffoldsonly.Enclosedscaffoldsmust bespecificallydesignedforeachapplicationbyaqualifiedperson.

8. Onwallscaffoldsgreaterthansixliftshigh(40'),itmaybenecessarytobracetwoplankandthreeplank sidewallbracketsbacktothescaffoldlegs.ConsultwithHarscoInfrastructure'sEngineeringDepartmentprior tousingthesidewallbracketsonthoseoccasions

sideWallBracKet

Guardrail(tyP.)

Middrail(tyP.)

toeBoards

ladder BracKet

cliMBinG ladder

tuBeloX Brace(see note 8)

tuBeloX Brace(see note 8)

tuBeloX Guardrail

tuBeloX Midrail

GuardrailPost

sWinGinGGate

cleatPlanK atladder

locations(tyP.)

FIG. 1

FIG. 2

13

Typical Rolling Scaffolds

1. Important:singlespanwoodplanksonrollingscaffoldsmustbecleatedtopreventplanksfromdislodging orslidingoffbearers.Prefabricatedtype(asshownabove)havehookstoseatoverthebearersandrestrain theplankfrommovement.

2. InstallallplankingincompliancewithSafetyRule#29,(Seepage3).

3. Installguardrails,midrailsandtoeboardsatthetopandatanyintermediateheightworkinglevels.

4. Installhorizontalbrace(goosers)aslowaspossibleatbasesofrollingtowers;repeatthematleastevery 20oftowerheightandalwaysdirectlybelowthetopworkingplatform.

5. Allcastersmustbesecurelyattachedtobaseplateofadjustableleg.Adjustablelegsmustnotextendmore than12.

6. Hingepinsmustbeinstalledattheverticalconnectionpointsbetweenposts,sprockets,guardrailsupports andbetweenpostsandcasters.

7. Alwaysinstallsideandendtoeboardsatplankedworkinglevels.Useclimbingladdersforaccessto platforms,(SeePage16).

8. Free-standingrollingscaffoldsmustbeguyed,tiedtoasolidstructureorthemaximumplatformheightmustnotexceed4timesthenarrowestbasedimension.RefertoPage14forhighrollingtowers.CheckifStateOSHARegulationshaveotherthan4:1height/baseratios.SeeadditionalrollingtowerSafetyRule#28onPage3.

General notes for all rolling towers:

Towers not higher than 4 times the narrowest base dimension.SEENOTETOPOFPAGE14REGARDINGGUYING&TIEING

14

Towers requiring extended base dimensions.NOTE: Free-standingrollingscaffoldsmustbeguyed,tiedtoasolidstructureor,themaximumplatformheightmustnotexceed4times*thenarrowestbasedimension.*SomestateOSHAregulationsmayhaveotherlimitingheight/baseratios,suchas3:1inCalifornia.Checkandcomplywithyourlocal/StateOSHARegulations.

High Rolling Scaffolds

1. Baseofrollingtowermaybeextendedbytheadditionofhorizontalsandposts.

2. The2"tubetowerbracesmustbeinstalledatapproximately60degreesbetweenthetowerandeach additionalpostwith2"x2"adjustablecouplers.HeightHmustnotexceed:9'-0"for5'-0"wide extension,6'-10"for4'-0"wideextension,5'-6"for3'0"wideextension,3'-5"for2'-0"wideextension.

3. HeightTmustneverexceed3timesthewidthofthebearersoftheupperportionofthetower,i.e.15' for5'bearers.

4. TomaintainheightsHandTabove,itmaybenecessarytobuild-uptheextensionstoasuitableheight usingposts.Alladditionalpostsmustbeconnectedtoeachotherwithdiagonals,horizontalsandbecoupledtothetowerinthesamemannershownforthebaselevelwith(two)2"x2"adjustablecouplers.

5. ConsultwithHarscoInfrastructureAmericasfortheproperequipmentfortherequiredheight,foranyunusualconditionsandhighrollingtowersover30'.

6. RefertoandcomplywithallSafetyRulesonPages2and3.

additional notes for High rolling scaffolds

IMPORTANT LOADING DATA

for special conditions and for rolling towers wider than one bay consult Harsco infrastructure americas for loading data. remove all users and materials from rolling towers before moving.

sWinG Gate

1/4 of HeiGHt MiniMuM 1/4 of HeiGHt MiniMuM

HeiGHt "t"

see note 3

HeiGHt "H"

see note 2

ladder012cl7012cl4

2" tuBe toWerBrace attacHWitH 2"X2" adJ.

couPlers

anGle 60MaX

15

Proper Methods of Installing Trusses

WARNING:DONOTPERMITCONCENTRATIONSOFMENAND/ORMATERIALSTOEXCEEDTHEABOVELOADSATANYLOCATION.DEDUCTWEIGHTS OF PLANKS AND USERS FROM UNIFORMLY DISTRIBUTED LOADS ABOVE TO DETERMINE MAXIMUMMATERIALWEIGHTS.CHECKTOASSURELOADSONTRUSSSUPPORTLEGSDONOTEXCEEDTHEIRALLOWABLELOAD.

1. Installguardrails,midrailsandtoeboardsontrussedplatformsatallplatformopeningsandatallopen endsandsides.

2. Assurethatallsecuringbolts,nuts,pins,wedgesandotherhardwareareproperlyandsafelyfastened.

3. Seetrussloadingdataabove.

General installation instructions for all trusses

*Allowableuniformlydistributedloadofplanks,menandmaterials.**Maximumloadofmenandmaterialsinanyspanconcentratedina25squarefeet(5x5)areadirectlyover onetrussorbetweentwotrusses.

TRUSSSIZE

MAXIMUMSPAN

ALLOWABLE LOADS*UNIFORMLY DISTRIBUTED

MAXIMUM** CONCENTRATED LOADS

20 20 130#/FT. 1334#16 16 177#/FT. 1980#

Truss Loading DataNeverexceedtheseuniformlydistributedloads

GuardrailPost

Guardrail

PlanK

truss

truss saddle

truss saddle

truss

3/8" Bolt& nut

location ofQes HoriZontals(3) Per 20' truss(2) Per 16' truss

location ofQes HoriZontals(3) Per 20' truss(2) Per 16' truss

MidrailtoeBoard

1616

Step Unit Access Towers

Notes: 1. Maximumallowabletowerheightis60'.Forgreaterheights,consultHarscoInfrastructure'sEngineeringDepartment.

2. Allstep/stairunitsmustbeinstalledwithdiagonalhandrailsunitsasshown.

3. Guardrails,midrailsandtoeboardsmustbeinstalledasillustratedabove.

4. Thetoplevelmustbeequippedwithfullguardrails,midrailsandtoeboardstoprotectallopeningsand opensides.Intheaboveillustration,guardrails,midrails,andtoeboardswouldberemovedataccess locations.

5. Thetowermustbeproperlytiedorguyedevery13'vertically.

6. Totalpersonnelloadingmustberestrictedtoamaximumoftenusersupto60'andamaximumofeightusersupto124'.Neverallowuserstocongregateinexcessivenumbersatlandings,exits,orentrances.

17

Climbing and Access Components

Notes: 1. Allscaffoldsmustbeequippedwithclimbingladdersorequivalentsafemeansofaccesstoscaffoldplatforms.

2. ClimbingladdersshownonthispageandthestepunitsshownonPage16areavailablefromHarscoInfrastructureAmericasuponrequest.

3. Alternatively,properlyinstalledportablewoodormetalladders,orjob-builtladderscanbeusedandinstalled bytheuserorerector.

4. Appropriateguardrailingorgrabrailsmustbeprovidedatladderexitlocations.Landingplatformsorrest platformsmustbeprovidedat30'intervalsofcontinuousladderruns.

5. NEVERpositionladderssothattheirusewilltipthescaffold.

6. NEVERallowclimbingofdiagonalbracesorringsofposts.

18

Typical Assembly Boiler Accessories

Notes: 1. Supportbeamshouldbeinstalledlevel.

2. SinglelegsbearingonsupportbeammustbeCclampedtobeam.

3. Endsofsupportbeammayrequireshimsduetounevenboilertubes.

4. HeavyhorizontalsmustbepositionedasshownondrawingswithTUBELOXbutts,atendwalls.

5. Keepunauthorizedpersonneloutofboilerwhilescaffoldingisbeingerectedordismantled.

6. Washdownisrecommendedpriortodismantlingwatchforloosedebris.

7. Provideasafe,stablemeansofaccesstoupperendofheavydiagonal.

BUTTS AGAINST END WALLS OMITTED FOR CLARITY.

19

1. ItshouldbetheresponsibilityofuserstoreadandcomplywiththefollowingguidelineswhicharedesignedtopromotesafetyinthedismantlingofQESscaffolding.Theseguidelinesdonotpurporttobeallinclusivenorsupplantorreplaceotheradditionalsafetyandprecautionarymeasuresthatmaybenecessarytocoverusualorunusualconditions.

2. ChecktoseeiftheQESscaffoldinghasbeenstructurallyalteredinanywaywhichwouldmakeitunsafe;and,ifso,reconstructwherenecessary,inaccordancewiththesesafetyrules,beforecommencingwiththedismantlingprocedures.

3. DismantletheQESscaffoldingfromthetopdown.Beginbyremovingallaccessoriesfromtheliftbeingdismantledatthetime.

4. Alwaysworkfromaminimumoftwoplanksplacedonthebearersbelowtheliftbeingremoved.Moveplankingdownasdismantlingprogresses.

5. Donotremovetiesandbracesuntildismantlinghasreachedthelifttowhichtheyareattached.

6. AlwaysstaywithintheinsideoftheQESscaffolding.Donotclimbontheoutsideforanyreasonwhendismantling.Donotclimbonties,bracesorunbracedcomponents.Useonlyappropriateclimbingandaccesscomponentstomovebetweenlevels.

7. Onlyremovehingepins,butts/ties,andanyaddedbracingfromthelevelbeingdismantled.

8. Besurethatareabelowisclearofusersnotinvolvedinthedismantlingandissecuredagainstunauthorizedaccess.

9. LowerQESscaffoldingcomponentsinasafemannerastheyaredismantled.Avoiddroppingorthrowingthecomponentsasthiscouldresultininjurytousersbelow,ordamagetotheequipment.

10.Useenergyabsorbinglanyardsandfullbodyharnessesasrequired.Securetoproperlydesignedanchorpointsorstructure.

11.Donotclimbrings.

THEWORKOFDISMANTLINGQESQUICKERECTSCAFFOLDSHOULDBEUNDERTHESUPERVISIONOFANINDIVIDUALWITHPROPEREXPERIENCEANDAPTITUDE.THEFOLLOWINGSHOULDBEOBSERVEDWHILEDISMANTLING.

Dismantling Notes AsadaptedfromtheSCAFFOLDING,SHORING&FORMINGINSTITUTE(SSFI)

201

0HarscoInfrastructure.Allrig

htsreserved

.

Harsco Infrastructure Americas650FromRoadParamus,NJ07652

TEL:1-800-969-5600FAX:201-261-5544E-MAIL:info@harsco-i.usWEBSITE:www.harsco-i.com

WARNINGSeriousinjurymayresultifyoufailtousesafepracticeintheerecting,dismantlingoruseofmastclimbing,workplatforms,scaffolding,shoringand/orformingequipment.Erectors,dismantlersandusersmustbefamiliarwithandfollowcurrentlawsandregulations,safepracticeandtheSafetyRulesandInstructions.Individualsusingthisequipmentmustbeinstructedintheserequirements.SafetyRulesandInstructionspertainingtotheproductsshownhereinareprovideduponsaleorrentalofequipment.Additionalcopiesorfurtherinformationshallbeprovideduponthecustomersrequestandareonlineatwww.harsco-i.us/safety_rules.php.

ItisimportanttonotethatcurrentOSHAregulationsrequiretheuseofguardrailsystemsand/orfall-protectiondevicesatallworkinglevels,opensides,andatallotheropeningsonplatformsandworkareasabovecertainheights,asspecifiedbyOSHA.Inallcases,whereaworkerisexposedtoafallhazardintheuseofthisequipment,guardrailsystems,whereappropriate,orotherpersonalfall-protectiondevices,mustbeutilized.Meansofaccessmustbemadeavailablebythecustomertoalllocationswherepeopleareexpectedtowork.Materialsfortheprovisionofsuchmeansofaccessmaybejob-builtbythecustomeror,atthecustomersoption,beobtainedthroughHarscoInfrastructureAmericasorothersuppliers.HarscoInfrastructureAmericaswill,atthecustomersrequest,consultonanalternativemeansofaccess.

Photosanddiagramsareillustrativeonly.Allproductsandequipmentshallbeusedorofferedforsaleonlywherepermittedbylaworgovernmentalregulations,codesorordinancesandshallbeusedinstrictconformitytherewithandforthepurposesandinthemannerasmaybeprescribedthereinandinconformitywithsafepractice.Specificationsofproductsandequipmentshownhereinaresubjecttochangewithoutnotice.