qes – quick erect scaffold · conform to osha specifications. 7. erecting and dismantling of...
TRANSCRIPT
QES® – QUICK ERECT SCAFFOLDsafety rules and instructions #910r5
2
General 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.
3
1. 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
4
QES® 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.QES®sidewallbracketsare designedtoprovide1',2’and3’ 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.
5
Allowable 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. OSHArequiresthatscaffoldsover125’highbedesignedbyaprofessionalengineer.
5. Forfurtherinformationrelativetospecificscaffoldinginstallationsthatdonotfallwithintheseguidelines, consultHarscoInfrastructureAmericas.
FullThicknessUndressed
Lumber
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
6
Allowable 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
NUMBEROFADDITIONAL
PLANKEDLEVELS
RUNNERLENGTHINFEET
1at50#/sq.ft.
1at50#/sq.ft.
+1at25#/sq.ft.
1at50#/sq.ft.
1at50#/sq.ft.
+1at25#/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
NUMBEROFADDITIONAL
PLANKEDLEVELS
RUNNERLENGTHINFEET
56
1at50#/sq.ft.
1at50#/sq.ft.
+1at25#/sq.ft.
1at50#/sq.ft.
1at50#/sq.ft.
+1at25#/sq.ft.
6
0
ALL
ALL
125+
125+
125+
86
125+
125+
99
73
Bearer Width-3 Ft. Bearer Width-4 Ft.
5678
7
Safe 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
8
Typical Installation Sequence
FIG. 1—LAYOUT ■ Setout4adjustablebases(1)attheirintendedpost
positions.■ Alwayscommenceathighestpointofgroundwithasmall
amountofscrewlegadjustment.■ Layoutthepartsshownalongsidethebasesforthefirst
scaffoldtowerorsection.■ Place4basecollars(2)overthescrewlegs;thesewillform
thebase.■ Orientthelockingringsof(2)sothatoneoftheslotsis
alignedinthebearerdirection.■ AlsoseeFig.3.
FIG. 2—BASE CONSTRUCTION■ Connect2bearers(3)and2runners(4)tothe4locking
ringsonthebasecollars.■ Slidethewedgesof(3)and(4)downintothealignedlocking
ringslots–DONOTTIGHTENWEDGESATTHISTIME.■ Placehorizontaldiagonalbrace(5)betweencornerpostsas
shown.DONOTCONNECTTHISBRACE–itisusedatthistimeONLYtosquarethebaserectangle.Alternativelyuseatemplatetosquarethebase.
■ Useaspiritlevelonthehorizontalsandlevelthemaccuratelybyadjustingthescrewlegs.Themorecarefullythisisdone,themoreeasilysubsequenterectionwillbeaccomplishedasthescaffoldisbuilt-up.
■ Nowtapwedgesintosecureengagementinthelockingrings;thewedgedesignmakesafirmandrigidright-angleconnection.Assurewedgeiscenteredinslot.
■ Removehorizontaldiagonalbrace(5)andretainforfutureuseatatielevel.
■ Byaddingsuccessivepairsofscrewlegs(1)andbasecollars(2)andrepeatingtheabovesteps,completethewholeofthebasebeforeextendingthescaffoldvertically.
■ Extendthescrewlegsprogressivelytoretainthebasehorizontalslevelwiththefirstsection.Screwlegshave20½”ofadjustment.Onprogressivelyslopingground,once19½”ofadjustmentisreachedsetthenextpairofbases19½”lower(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 feet
AdjustableBase(20”adjustment)
BaseCollar
Bearer(horizontal)&Guardrail
Runner(horizontal)&Guardrail
HorizontalDiagonalBraceGooser(scaffoldwidthxbaysize)
Side/EndDiagonalBrace(6’-6”HighxWidthorbaysize)
Post/GuardrailSupports(height,feet)
DoubleLockingCaster—attachesto(1)
QL20
QLC
QH___
QH___
QG___
QD___
QP___
QL10
1.
2.
3.
4.
5.
6.
8.
7.
ThispublicationcontainsstandardinstructionsforthebasicmethodsofinstallingtheQES®ScaffoldingSystems.TheseSafetyRulesandInstructionscovergeneralizedsituationsonlyanddonotpurporttobeall-inclusive,nortosupplantorreplaceotheradditionalsafetyandprecautionarymeasuresthatmaybenecessarytocoverthemanyusualandunusualconditionsthatmaybeencounteredduringitsinstallation,useandremoval.Theyarenotintendedtoconflictwith,orsupersedetherequirementsofOSHAoranyothergovernmentalregulations,codes,orordinances;referencetosuchspecificprovisionsoflawshouldbemadebytheuser.
Fig.2
Fig.1
9
a B
cd
d
e
fi
FIG. 5 – SCAFFOLD ON VARYING GRADE ■ Whenthescaffoldhastoaccommodateasuddenchangeinlevelormorethanthe20½”normaladjustmentofascrewlegitisnecessarytomakeastep-downasshownabove.
■ Startleg(B)usinganadjustablebase(1)withminimumadjustment,abasecollar(2)andanewpost(7).Adjustthescrewlegsothatthepost’slockingringsareapproximatelylevelwiththosetotheprecedingpost.Connectarunner4at(C).
■ Accuratelylevelthisrunner,tightenthewedges,andrepeatthissequencefortheoppositefaceofthescaffold.Connectbearers(3)atpositions(D)andattachadiagonalbraceat(F).
■ Completealltheotheruppermembersattachingtopost(B)beforecontinuinginsimilarfashionalongthescaffoldfrompost(E)onwards.
FIG. 4 – FIRST SECTION ■ Place4posts(7)either6’-6”or9’-9”long,verticallyintothebasecollars(2)andorienttheirlockingringsapproximatelythesameasthoseonthebasecollars.
■ Jointcouplingsonthepostsmustpointup.
■ Addthesecondlevelofhorizontals(3)and(4);thenormalverticalliftincrementis(4)19½”lockingringspaces(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. 3—LOCKING RINGIneachlockingringareeight(8)slots.Duringinitialassembly,alignthelockingringofbasecollarandthoseonthepostssothatoneoftheslotspointsintheintendedbearerdirection;twoslotsatrightanglestoitwillpointintherunnerdirectionautomatically.Theotherslotsarefortheconnectionofdiagonalbraces.Anyslotcanbeusedtostartthescaffold.
Fig.3
m
l
l
l
p
p
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
. fo
r 4’
Wid
e (
min
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ee s
afet
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(see safety rule #17)
(see safety rule #17)
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BetWeen Braced Panels o
MaXiMuM 3 Bays
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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 20’oftowerheightandalwaysdirectlybelowthetopworkingplatform.
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.Height“H”mustnotexceed:9'-0"for5'-0"wide extension,6'-10"for4'-0"wideextension,5'-6"for3'0"wideextension,3'-5"for2'-0"wideextension.
3. Height“T”mustneverexceed3timesthewidthofthebearersoftheupperportionofthetower,i.e.15' for5'bearers.
4. Tomaintainheights“H”and“T”above,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.
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15
Proper Methods of Installing Trusses
WARNING:DONOTPERMITCONCENTRATIONSOFMENAND/ORMATERIALSTOEXCEEDTHEABOVELOADSATANYLOCATION.DEDUCTWEIGHTS OF PLANKS AND USERS FROM UNIFORMLY DISTRIBUTED LOADS ABOVE TO DETERMINE MAXIMUM MATERIALWEIGHTS.CHECKTOASSURELOADSONTRUSSSUPPORTLEGSDONOTEXCEEDTHEIRALLOWABLELOAD.
1. Installguardrails,midrailsandtoeboardsontrussedplatformsatallplatformopeningsandatallopen endsandsides.
2. Assurethatallsecuringbolts,nuts,pins,wedgesandotherhardwareareproperlyandsafelyfastened.
3. Seetrussloadingdataabove.
General installation instructions for all trusses
*Allowableuniformlydistributedloadofplanks,menandmaterials.**Maximumloadofmenandmaterialsinanyspanconcentratedina25squarefeet(5’x5’)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. Singlelegsbearingonsupportbeammustbe“C”clampedtobeam.
3. Endsofsupportbeammayrequireshimsduetounevenboilertubes.
4. HeavyhorizontalsmustbepositionedasshownondrawingswithTUBELOX®butts,atendwalls.
5. Keepunauthorizedpersonneloutofboilerwhilescaffoldingisbeingerectedordismantled.
6. Washdownisrecommendedpriortodismantling–watchforloosedebris.
7. Provideasafe,stablemeansofaccesstoupperendofheavydiagonal.
BUTTS AGAINST END WALLS OMITTED FOR CLARITY.
19
1. ItshouldbetheresponsibilityofuserstoreadandcomplywiththefollowingguidelineswhicharedesignedtopromotesafetyinthedismantlingofQES®scaffolding.Theseguidelinesdonotpurporttobeallinclusivenorsupplantorreplaceotheradditionalsafetyandprecautionarymeasuresthatmaybenecessarytocoverusualorunusualconditions.
2. ChecktoseeiftheQES®scaffoldinghasbeenstructurallyalteredinanywaywhichwouldmakeitunsafe;and,ifso,reconstructwherenecessary,inaccordancewiththesesafetyrules,beforecommencingwiththedismantlingprocedures.
3. DismantletheQES®scaffoldingfromthetopdown.Beginbyremovingallaccessoriesfromtheliftbeingdismantledatthetime.
4. Alwaysworkfromaminimumoftwoplanksplacedonthebearersbelowtheliftbeingremoved.Moveplankingdownasdismantlingprogresses.
5. Donotremovetiesandbracesuntildismantlinghasreachedthelifttowhichtheyareattached.
6. AlwaysstaywithintheinsideoftheQES®scaffolding.Donotclimbontheoutsideforanyreasonwhendismantling.Donotclimbonties,bracesorunbracedcomponents.Useonlyappropriateclimbingandaccesscomponentstomovebetweenlevels.
7. Onlyremovehingepins,butts/ties,andanyaddedbracingfromthelevelbeingdismantled.
8. Besurethatareabelowisclearofusersnotinvolvedinthedismantlingandissecuredagainstunauthorizedaccess.
9. LowerQES®scaffoldingcomponentsinasafemannerastheyaredismantled.Avoiddroppingorthrowingthecomponentsasthiscouldresultininjurytousersbelow,ordamagetotheequipment.
10.Useenergyabsorbinglanyardsandfullbodyharnessesasrequired.Securetoproperlydesignedanchorpointsorstructure.
11.Donotclimbrings.
THEWORKOFDISMANTLINGQES®–QUICKERECTSCAFFOLDSHOULDBEUNDERTHESUPERVISIONOFANINDIVIDUALWITHPROPEREXPERIENCEANDAPTITUDE.THEFOLLOWINGSHOULDBEOBSERVEDWHILEDISMANTLING.
Dismantling Notes AsadaptedfromtheSCAFFOLDING,SHORING&FORMINGINSTITUTE(SSFI)
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Harsco Infrastructure Americas650FromRoadParamus,NJ07652
TEL:1-800-969-5600FAX:201-261-5544E-MAIL:[email protected]:www.harsco-i.com
WARNINGSeriousinjurymayresultifyoufailtousesafepracticeintheerecting,dismantlingoruseofmastclimbing,workplatforms,scaffolding,shoringand/orformingequipment.Erectors,dismantlersandusersmustbefamiliarwithandfollowcurrentlawsandregulations,safepracticeandtheSafetyRulesandInstructions.Individualsusingthisequipmentmustbeinstructedintheserequirements.SafetyRulesandInstructionspertainingtotheproductsshownhereinareprovideduponsaleorrentalofequipment.Additionalcopiesorfurtherinformationshallbeprovideduponthecustomer’srequestandareonlineatwww.harsco-i.us/safety_rules.php.
ItisimportanttonotethatcurrentOSHAregulationsrequiretheuseofguardrailsystemsand/orfall-protectiondevicesatallworkinglevels,opensides,andatallotheropeningsonplatformsandworkareasabovecertainheights,asspecifiedbyOSHA.Inallcases,whereaworkerisexposedtoafallhazardintheuseofthisequipment,guardrailsystems,whereappropriate,orotherpersonalfall-protectiondevices,mustbeutilized.Meansofaccessmustbemadeavailablebythecustomertoalllocationswherepeopleareexpectedtowork.Materialsfortheprovisionofsuchmeansofaccessmaybejob-builtbythecustomeror,atthecustomer’soption,beobtainedthroughHarscoInfrastructureAmericasorothersuppliers.HarscoInfrastructureAmericaswill,atthecustomer’srequest,consultonanalternativemeansofaccess.
Photosanddiagramsareillustrativeonly.Allproductsandequipmentshallbeusedorofferedforsaleonlywherepermittedbylaworgovernmentalregulations,codesorordinancesandshallbeusedinstrictconformitytherewithandforthepurposesandinthemannerasmaybeprescribedthereinandinconformitywithsafepractice.Specificationsofproductsandequipmentshownhereinaresubjecttochangewithoutnotice.