JIS-A-8951-1985-ENG

JIS.~UDC69.057:624.014.27JAPANESEINDUSTRIALSTANDARDTubularSteelScaffolds@JISA895I-1985TranslatedandPublishedbyJapaneseStandardsAssociationPrintedinJapan21sCopyrightJapaneseStandardsAssociationProvidedbyIHSunderlicensewithJSALicensee=IHSEmployees/1111111001,User=Wing,BernieNotforResale,03/12/200723:27:48MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,`,,```,`,`,``,`,`,````,-`-`,,`,,`,`,,`---JISA*l!95I85m4933b080005270IPTranslationwithoutguaranteestandardinJapaneseistobeevidenceintheeventofanydoubtarising,theoriginalCopyrightJapaneseStandardsAssociationProvidedbyIHSunderlicensewithJSALicensee=IHSEmployees/1111111001,User=Wing,BernieNotforResale,03/12/200723:27:48MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,`,,```,`,`,``,`,`,````,-`-`,,`,,`,`,,`---UDC69.057:624.014.27JAPANESEINDUSTRIALSTANDARDJISTubularSteelScaffoldsA8951-19851.ScoDeThisJapaneseIndustrialStandardspecifiesthetubularsteelscaffoldsusedforbuildingworks.Remark:Theunitsandnumericalvaluesgivenin{1inthisstandardareinaccordancewiththeInternationalSystemofUnits(SI),andareappendedforreference.2.ClassificationThetubularsteelscaffoldsshallbeclassifiedintotubeandcouplerscaf-foldingandprefabricatedscaffolding.(1)TubeandCouplerScaffoldingItmeansthelocationscaffoldingwheresteelpipesareassembledusingclampsinabuildingsite.(2)PrefabricatedScaffoldingItmeansthelocationscaffoldingwhereverticalframesprefablicatedusingsteelpipesasprincipalmemberandothermembersareassembledinabuildingsite.3.NamesofRespectiveParts3.1TubeandCouplerScaffoldingThenamesofrespectivepartsoftubeandcouplerscaffoldingshallbeasfollows(refertoFig.1).UprightpostLedgerBracketRidgedirectionalbraceLateralbracingWallbindingmetalfittingsAccessorymetalsI,IApplicableStandardsandReferenceStandards:Seepage38.lCopyrightJapaneseStandardsAssociationProvidedbyIHSunderlicensewithJSALicensee=IHSEmployees/1111111001,User=Wing,BernieNotforResale,03/12/200723:27:48MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,`,,```,`,`,``,`,`,````,-`-`,,`,,`,`,,`---JISA*8951854933b08000527252A8951-1985(8)Decking(9)MAEBUMI(Japanese)(Inneruprightpostforexteriormainscaffolding)(10)ATOBUMI(Japanese)(Outeruprightpostforexteriormainscaffolding)Remark:Theaccessorymetalsshallbedividedasfollows:(1)TubeandCouplerJointonastraightline.Itisthejointforjointingtwotubes(2)ClampItisthefollowingaccessorymetalsusedfortighteningtubesintersectingthem.(a)CrossTypeMetalfittingsusedforcrossingoftubesatrightangles.(b)AdjustableTypeMetalfittingsusedforintersectingtubesatoptionalangles.(3)FixedTypeBaseMetalFittingsmittingtheloadofuprightposttogroundbyattachingthemtothelowerendofuprightposttubeandsoconstructedastoconsistoftenonandbaseplate.Theyaremetalfittingstrans-CopyrightJapaneseStandardsAssociationProvidedbyIHSunderlicensewithJSALicensee=IHSEmployees/1111111001,User=Wing,BernieNotforResale,03/12/200723:27:48MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,`,,```,`,`,``,`,`,````,-`-`,,`,,`,`,,`---O‘Ridgedirectionalbracing3.2PrefabricatedScaffoldingThenamesofmembersofprefabricatedscaffoldingshallbeasfollows(refertoFig.2):(1)VerticalFrame(2)LedgerFrameli(3)LedgerFramewithFloor(4)IntersectingBracell(5)CorbelledFrameCopyrightJapaneseStandardsAssociationProvidedbyIHSunderlicensewithJSALicensee=IHSEmployees/1111111001,User=Wing,BernieNotforResale,03/12/200723:27:48MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,`,,```,`,`,``,`,`,````,-`-`,,`,,`,`,,`---JISA*895L854933b88000527494A8951-1985(6)WallBindingMetalFittings(7)AccessoryMetalsTheaccessorymetalsshallbedividedasfollows:LegPostJointArmLockJackTypeBaseMetalFittingsClampFig.2Handrail,HandrailPostLeQgerframeor,ledgerframe\withfloorVertical(frameIntersecting,braceLedgerframeorledgerframe5withfloorJacktypebase,metalfittingsWallbinding/metalfittingsfloorCopyrightJapaneseStandardsAssociationProvidedbyIHSunderlicensewithJSALicensee=IHSEmployees/1111111001,User=Wing,BernieNotforResale,03/12/200723:27:48MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,`,,```,`,`,``,`,`,````,-`-`,,`,,`,`,,`---5A8951-19844.Quality(MaterialQuality,Dimensions,Strength,Construction,etc.)4.1TubeandCouplerScaffolding4.1.1SteelTubesforTubeandCouplerScaffoldingThequalityofsteeltubesfortubeandcouplerscaffoldingshallbeasfollows:(1)ThesteeltubesfortubeandcouplerscaffoldingshallconformtoSTK51specifiedinJISG3444andthedimensionsshallbe48.6mminouterdiameterand2.5mminthickness.(2)Thesteeltubesfortubeandcouplerscaffoldingshallbeprocessedwithcoutinghavingrustproofeffectasfollows:(a)Thesteeltubeshallbecoatedaftersufficientlycleaningitbysand-blastingorpickling.(b)ThequalityofcoatingsoftubeprocessedwithzinccoatingshallbeGrade1HDZAofJISH8641orthatsuperiorthereto,4.1.2AccessoryMetals(1)ThestrengthorthelikeoftubeandcouplerjointshallconformtoTable11Table1ItemDeflectionandbendingstrengthElongationandtensilestrengthCompressivestrengthSepecification1.Theamountofverticaldeflectionshallbe19mmMax.2.Themaximumloadshallbenotlessthanthefollowingvalues:MeanvalueMinimu