1、BRITISH STANDARD BS EN 12811-2:2004 Temporary works equipment Part 2: Information on materials The European Standard EN 12811-2:2004 has the status of a British Standard ICS 91.220 BS EN 12811-2:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committ
2、ee on 18 August 2004 BSI 18 August 2004 ISBN 0 580 44303 5 National foreword This British Standard is the official English language version of EN 12811-2:2004. The UK participation in its preparation was entrusted by Technical Committee B/514, Access and support equipment, to Subcommittee B/514/21,
3、Access and working scaffolds and their components (props, tubes and couplers), which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Additional information As stated in the Scope of EN 12811-2:2004, this standard “provi
4、des guidance on where to find information on materials often used in temporary works.“ It lists standards and provides information concerning the more commonly used steel, aluminium alloys, cast iron, timber and timber based materials. The Scope of EN 12811-2:2004 also states that the standard “draw
5、s attention to a number of points that a designer should take into account“. It does not purport to be exhaustive. Almost all the information given in this standard has been selected from the standards referenced. The information in these referenced standards may be amended or revised as circumstanc
6、es dictate. The latest versions of the referenced standards will themselves contain the full information, in context, to be used. 8.1 gives three classes of corrosion protection for ferrous metal products. The friction values of corrosion protection outside these classes may differ significantly fro
7、m one another, particularly in the case of more modern corrosion protection treatments, such as non-electrolytically applied zinc flake coatings. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalog
8、ue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its corre
9、ct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests info
10、rmed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright notice displayed in this document ind
11、icates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN128112 February2004 ICS91.220 Englishversion TemporaryworksequipmentPart2:Informationonmaterials EquipementstemporairesdechantiersPartie2: Informationc
12、oncernantlesmatriaux TemporreKonstruktionenfrBauwerkeTeil2: InformationenzudenWerkstoffen ThisEuropeanStandardwasapprovedbyCENon17December2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithout
13、anyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENm
14、emberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Nor
15、way,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENna
16、tionalMembers. Ref.No.EN128112:2004EEN128112:2004(E) 2 Contents page 1 Scope . 5 2 Normativereferences . 5 3 General. 6 3.1 Selectionofmaterials . 6 3.2 Characteristicvalues. . 6 3.3 Inspectiondocuments 6 3.4 Effectsoffabrication 6 4 Steel 6 4.1 General. 6 4.2 Dimensions,massandtolerance 6 4.3 Fract
17、uretoughness 7 4.4 SteelgradesinEN10142 . 7 5 Castiron. 7 5.1 General. 7 5.2 Prototypetesting . . 7 5.3 Inspectiondocument. . 7 6 Aluminiumalloys 8 6.1 General. 8 6.2 Dimensions,massandtolerance 8 6.3 Heataffectedzones . . 8 6.4 Inspectiondocument. . 8 7 Timberandtimberbasedmaterials . . 8 7.1 Gener
18、al. 8 7.2 Solidtimberandgluedlaminatedtimber . 9 7.2.1 General. 9 7.2.2 Characteristicvalues. . 9 7.2.3 Dimensions,massandtolerance 9 7.3 Woodbasedmaterials(plywood,particleboard,fibreboard). 9 7.3.1 General. 9 8 Protectionagainstcorrosionanddeterioration 9 8.1 Ferrousmetalproducts 9 8.2 Aluminiumal
19、loys 10 8.3 Plywoodforscaffolddecks . 10 9 Welding 10 AnnexA (informative) Informationtakenfromothermaterialanddesignstandards. 11 Bibliography . 17EN128112:2004(E) 3 Foreword Thisdocument(EN128112:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC 53“Temporre Baukonstruktionen”,thesecretariatofwhichish
20、eldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyAugust2004,andconflictingnationalstandardsshallbewithdrawnat thelatestbyAugust2004. ThisEuropeanStandardEN12811consistsofthefollowingpartsunderthegeneraltitle:Temp
21、oraryworks equipment: Part1:ScaffoldsPerformancerequirementsandgeneraldesign Part2:Informationonmaterials Part3:Loadtesting AnnexAisinformative. ThisdocumentincludesaBibliography. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplemen
22、tthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepublic, Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania, Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,Switzerland andUnitedKingdom.EN128112:2004(E) 4 Introduction Th
23、isEuropeanStandardrepresentsasupportingstandardforproductstandardsproducedbyCEN/TC53. IttakesintoaccountthematerialrelatedcommentsonthefollowingdraftsobtainedintheCENenquiry: prEN128101:1997 ,FaadescaffoldsmadeofprefabricatedcomponentsPart1:Productspecifications. prEN128102, Faadescaffoldsmadeofpref
24、abricatedcomponentsPart2:Particularmethodsofstructural design prEN12811:1997, ScaffoldsPerformancerequirementsandgeneraldesign. prEN12812:1997, FalseworkPerformancerequirementsandgeneraldesign. prEN12813:1997,LoadbearingtowersmadeofprefabricatedelementsMethodsofparticulardesignand assessment. prEN13
25、3311:1998, TrenchliningsystemsPart1:Productspecifications. prEN133312:1998, TrenchliningsystemsPart2:Assessmentbycalculationortest . prEN13377:1998, PrefabricatedtimberformworkbeamsRequirements,classificationandassessment. Thisstandardislimitedtotheselectionoftypesandgradesofmaterialfromstandards,wh
26、ichareeither internationalorEuropeanstandards.However,inthefieldoftemporaryworksequipmenttheuseofother materialscanbeindicatedorevenimperative. Theuseofnonstandardised(new)materialscangiveadvantageforparticularcomponents.Butthisuse preventsthemarkingoftheproductconforminginotherrespectstotheproducts
27、tandardwiththenumberof therespectiveproductstandard. Thecomponentsoftemporaryworksequipmentareusedformanyyears.Therearecomponentsinthestores oftheusersandonbuildingsiteswhicharemadeofmaterialscorrespondingtoformernationalstandards. Thisstandarddoesnotintendtopreventneithertheuseofnonstandardised(new
28、)materialsnortheuseof componentsmadeofoldmaterials. ItisbeyondthescopeandthecompetenceofCEN/TC53toformulateregulationsfornonstandardizednew materialsandforoldmaterialsformerstandardizednationally. IntheabsenceofaEuropeanproductdirectivefortemporaryworksequipment,suchregulationsandtheir mutualacknowl
29、edgementarereservedtothesingleEuropeancountry. ForclosingthegapuntilaEuropeanregulationisavailable,thefollowingrecommendationsaregiven: 1. Thesinglecountrycouldaddanationalforewordtothisstandard,whichregulatesthefurtheruseof components,madeofoldmaterialsforitsjurisdiction. 2. TheWorkingGroupsofCEN/T
30、C53couldincludearequirementintheirproductstandardsthatalso productsmadepartiallyofmaterialsnotcoveredbyISOorENstandardsmayhavethenumberofthe productstandard,iftheyaremarkedwithanasteriskadditionallyandifthefactisrecordedintheproduct manual.EN128112:2004(E) 5 1Scope ThisEuropeanStandardprovidesguidan
31、ceonwheretofindinformationonmaterialsoftenusedintemporary works.Itdrawsattentiontoanumberofpointsthatadesignershouldtakeintoaccount. Theinformationgivenislimitedtocommonlyusedsteel,aluminiumalloys,castiron,timberandtimberbased materials. Requirementsarealsogivenforwelding,forlimitingcorrosionandothe
32、rdeterioration. Itislimitedtotheselectionoftypesandgradesofmaterialfromstandards,whichareeitherinternationalor EuropeanStandards. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesint
33、hetext,andthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies(includingamendments). EN301,Adhesi
34、ves,phenolicandaminoplastic,forloadbearingtimberstructuresClassificationand performancerequirements. EN336, StructuraltimberSizes,permitteddeviations. EN338, StructuraltimberStrengthclasses. EN390, GluedlaminatedtimberSizesPermissibledeviations. EN7291, QualityrequirementsforweldingFusionweldingofme
35、tallicmaterialsPart1:Guidelinesfor selectionanduse. EN1562, FoundingMalleablecastirons. EN1563, FoundingSpheroidalgraphitecastirons. EN10142, ContinuouslyhotdipzinccoatedlowcarbonsteelsstripandsheetforcoldformingTechnical deliveryconditions. EN10204, MetallicproductsTypesofinspectiondocuments. ENV19
36、9311, Eurocode3:DesignofsteelstructuresPart11:Generalrulesandrulesforbuildings. ENV199313, Eurocode3:DesignofsteelstructuresPart13:GeneralrulesSupplementaryrulesfor coldformedthingaugemembersandsheeting. ENV199511, Eurocode5:DesignoftimberstructuresPart11:Generalrulesandrulesforbuildings. ENV199911:
37、1998, Eurocode9:DesignofaluminiumstructuresPart11:GeneralrulesGeneralrules andrulesforbuildings. ENISO1461;HotdipgalvanizedcoatingsonfabricatedironandsteelarticlesSpecificationsandtest methods(ISO1461:1999). ENISO12944Parts1to8, PaintsandvarnishesCorrosionprotectionofsteelstructuresbyprotective pain
38、tsystems.EN128112:2004(E) 6 3General 3.1Selectionofmaterials Materialusedshallbesufficientlyrobustanddurabletowithstandnormalworkingconditions. Materialsshallbefreefromanyimpuritiesanddefects,whichmayaffecttheirsatisfactoryuse. MaterialsshallbeselectedfromEuropeanorInternationalStandards. NOTE Commo
39、nlyusedmaterialsarelistedinannexA. 3.2Characteristicvalues Theminimumvaluesforyieldstressorproofstressandforthetensilestrengthspecifiedinmaterialstandards shallbeusedascharacteristicvaluesindesigncalculations. 3.3Inspectiondocuments Materialsforcomponents,whichaffecttheloadbearingbehaviourand/orheal
40、thandsafetyaspects,shallbe deliveredwithaninspectiondocumentinaccordancewithEN10204.Theminimumlevelshallbe2.2. 3.4Effectsoffabrication Accountshallbetakenofformingorotherfabricationtechniquessuchasweldingwhichcanaffectthe materialproperties.Forexample,forsteeltheyieldstresscouldberaisedandtheductili
41、tycouldbereduced bytheseoperations. 4Steel 4.1General ThecommonlyusedmaterialsarelistedinTableA.1andTableA.2.Inaddition,requirementsaregivenin ENV199311andENV199313. SomematerialvaluesaregiveninTable1. Table1Materialvaluesforsteel Modulusofelasticity, E MPa Shearmodulus, G MPa Coefficientoflinear th
42、ermalexpansion a K 1 Density 3 m kg 210000 81000 5 10 2 , 1 - 7850 1MPa=1N/mm 2 4.2Dimensions,massandtolerance Dimensions,massandtolerancesshallbeinaccordancewiththematerialstandardspecified.EN128112:2004(E) 7 4.3Fracturetoughness Whenstructuresareusedattemperaturesbelow20C,impactresistantmaterialsh
43、allbeused.Foradvice andforreferencetemperaturerelatedtomaximumthicknessseeENV199311. 4.4SteelgradesinEN10142 Fordesignpurposes,thesteelgradesinEN10142shallbeconsideredtohaveayieldstressof140N/mm andatensilestrengthof270N/mm. 5 Castiron 5.1General MalleablecastironinaccordancewithEN1562orspheroidalgr
44、aphitecastironinaccordancewithEN1563 shallbeused. WhenweldingwhiteheartmalleablecastironENGJMW36012shouldbeused. Duetoductilityrequirementstheelongationforspheroidalgraphitecastironshallbelimitedto % 12 5 A ,for malleablecastironto % 7 4 , 3 A . SomematerialvaluesaregiveninTable2. Table2Materialvaluesforcastiron Castiron Modulusof elasticity, E MPa Poissonsratio Coefficientoflinear thermalexpansion a K 1 Density 3
