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1、Highstrengthstructuralboltingassembliesfpreloading—Part1:GeneralrequirementsTheEuropeanStardEN143991:2005hasthestatusofaBritishStardICS21.060.01BRITISHSTANDARDBSEN143991:2005NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTED
2、BYCOPYRIGHTLAWBritishStandardsBSEN143991:2005NationalfewdThisBritishStardistheofficialEnglishlanguageversionofEN143991:2005.EN143391:2005isacidate“harmonized”EuropeanStardfullytakesintoaccounttherequirementsoftheEuropean
3、CommissionmateM120StructuralmetallicproductsancillariesgivenundertheEUConstructionProductsDirective(89106EEC)isintendedtoleadtoCEmarking.ThedateofapplicabilityofEN143991:2005asaharmonizedEuropeanStard,i.e.thedateafterwhi
4、chthisstardmaybeusedfCEmarkingpurposesissubjecttoanannouncementintheOfficialJournaloftheEuropeanCommunities.TheCommissioninconsultationwithMemberStateshasagreedatransitionperiodfthecoexistenceofharmonizedEuropeanStardsth
5、eircrespondingnationalstard(s).Itisintendedthatthisperiodwillcompriseaperiod,usuallyninemonths,afterthedateofavailabilityoftheEuropeanStard,duringwhichanyrequiredchangestonationalregulationsaretobemadefollowedbyafurtherp
6、eriodusuallyof12monthsftheimplementationofCEmarking.InthisinstanceanapplicationhasbeenmadetoCENfatwoyearextendedcoexistenceperiod,fromSeptember2005toSeptember2007Attheendofthecoexistenceperiodthenationalstard(s)willbedec
7、laredobsolescentwillbewithdrawnonpublicationofEurocode3.EN143991:2005isthesubjectoftransitionalarrangementsagreedundertheCommissionmateIntheUKthecrespondingnationalstardsare:—BS43951:1969Specificationfhighstrengthfrictio
8、ngripboltsassociatednutswashersfstructuralengineering—Part1:Generalgrade—BS43952:1969Specificationfhighstrengthfrictiongripboltsassociatednutswashersfstructuralengineering—Part2:Highergradeboltsnutsgeneraltradewashers2^b
9、asedontheappliedftransitionperioditisplannedthatBS43951:1969BS43952:1969willbedeclaredobsolescentinSeptember2007D,then,togetherwithBS449BS5950willbewithdrawnuponpublicationofEurocode3.BS43951:1969BS43952:1969currentlysup
10、ptBS449BS5950.NOTEThisdateisapproximate.UsersofthisstardshouldcontactBSICustomerServicesfconfirmationofwithdrawal.lCENTC185WG6hasappliedfatwoyearextendedcoexistenceperiodto“September200ア’,facrigendumtoamendthesecond“Sept
11、ember2005”dateintheFewdtoEN143991:2005to“September2007”.2TogetherwithBSEN143992:2005BSEN143993:2005BSEN143994:2005BSEN143995:2005BSEN143996:2005BSEN143991:2005supersedesBS43951:1969BS43952:1969.SummaryofpagesThisdocument
12、comprisesafrontcoverpagei,ablankpageaninsidefrontcovertheENtitlepagepages2to22aninsidebackcoverabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.TheUKparticipationinthepreparati
13、onofEN143991wasentrustedbyTechnicalCommitteeFME9NutsboltsaccessiesSteeringCommitteetoitsSubcommitteeFME91,Materialswhichhastheresponsibilityto:—aidenquirerstounderstthetext—presenttotheresponsibleinternationalEuropeancom
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