Scaffolding1926.450-Scope,Application•Coversallscaffoldsusedinworkplaces•Doesnotapplytocraneorderricksuspendedpersonnelplatforms,whicharecoveredby1926.550(g)•Aerialliftsarecoveredexclusivelyby1926.4531926.450–Purpose•Updatesexistingstandardtoincludetypesofscaffoldssuchascatenaryandsteptrestle•Allowsflexibilityintheuseoffallprotectionsystemstoprotectemployees•Simplifieslanguage,eliminatesduplicativeoutdatedprovisions,consolidatesoverlappingrequirements•AllowsemployerscomplianceflexibilityOrganizationofStandard•1926.450Scope,applicationanddefinitionsapplicabletothissubpart•1926.451Generalrequirements•1926.452Additionalrequirementsapplicabletospecifictypesofscaffolds•1926.453Aeriallifts•1926.454TrainingOrganizationofStandard(cont’d)•AppendixA–Scaffoldspecification•AppendixB–(Reserved)Criteriafordeterminingthefeasibilityofprovidingsafeaccessandfallprotectionforscaffolderectorsanddismantlers•AppendixC–ListofNationalConsensusStandards•AppendixD–ListofTrainingTropicsforScaffoldErectorsandDismantlers•AppendixE–DrawingandIllustrations1926.450–EffectiveDates•EffectiveonNovember29,1996,exceptfor1926.453(a)(2)•Paragraphs(e)(9)and(g)(2)for1926.451whichaddresssafeaccessandfallprotectionforemployeeserectinganddismantlingsupportedscaffoldsiseffectiveSeptember2,19971926.450–MajorPoints•10foottriggerheightforfallprotectiononscaffolds•36inchminimumguardrailheightwherefallarrestsystemsareprimaryfallprotection•38inchminimumguardrailheightwhereguardrailisprimaryfallprotection•Providesforuseofcross-bracingasguardrailundercertainconditions,inlieuofeitheramid-railoratop-rail•Requiresafter1year,thatcompetentpersondeterminesfeasibilityofprovidingfallprotectionforbuilt-upscaffolderectorsanddismantlersScaffoldDefinitionMeansanytemporaryelevatedplatform(supportedorsuspended)anditssupportingstructure(includingpointsofanchorage),usedforsupportingemployeesormaterialsorboth.Competentperson•Inspectscaffoldingandcomponentspriortoeachworkshift•Determinefeasibilityofprovidingfallprotectionandaccess•Evaluateconnectionstosupportloadandpreventswaying•Determinestructuralsoundnesswhenintermixingcomponentsmanufacturer•Trainerectorsanddismantlerstorecognizeworkhazards1926.451(a)Capacity•Non-Adjustable–Supportitsownweightand4xmaximumintendedload–Suspensionropeandconnectinghardwaresupport6xmaximumintendedload•Adjustable–Stallloadofscaffoldhoistnottoexceed3xratedload–Designedbyaqualifiedpersonandbuilttoloadeddesign1926.451(b)Platformconstruction•Fullyplankedanddecked–Nomorethan1”gapbetweenadjacentunitsandplatformanduprights–Maxopeningsbetweenplatformanduprights9-1/2”–Platformandwalkwaysatleast18”wide1926.451(b)Platformconstruction(cont’d)•Eachabuttedendshallrestonaseparatesupportsurface•Overlapplatformsnotbelessthan12”onlyoversupportsunlessrestrainedtopreventmovement•Ondirectionchanges,platformsthatrestsonabeareratanangleotherthanarightanglemustbelaidfirst•Platformsthatrestatrightanglesoverthesamebearerlaidsecond1926.451(b)Platformconstruction(cont’d)•Frontedgeofallplatforms–Nomorethan14”fromfaceofwork–3”fromfaceforoutriggerscaffolds–18”fromfaceforplasteringandlathingoperations•Platforms10’andlesstoextendatleast6”butnotmorethan12”pastsupport•Platformsgreaterthan10’normorethan18”pastsupportunless1926.451(b)Platformconstruction(cont’d)•Fullyplank...
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