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BS 5268-2-2002 木材在建筑中的使用.第2部分:允许应力设计、材料和工艺的实施规程

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【英文标准名称】:Structuraluseoftimber-Codeofpracticeforpermissiblestressdesign,materialsandworkmanship
【原文标准名称】:木材在建筑中的使用.第2部分:允许应力设计、材料和工艺的实施规程
【标准号】:BS5268-2-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-03-14
【实施或试行日期】:2002-03-14
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:胶粘连接;支撑应力;螺栓连接件;木屑板;复合板材;连接器的连接件;设计;建筑用纤维板;等级(质量);硬质纤维板;连接件;叠层板材;钉固连接;碎料板;胶合板;螺钉连接件;剪应力;材料强度;应力;结构设计;建筑用木料;抗拉应力;木材;木制品;木质板材
【英文主题词】:Adhesive-bondedjoints;Bearingstress;Boltedjoints;Chipboards;Compositeboards;Connectoredjoints;Design;Fibrebuildingboard;Grades(quality);Hardboards;Joints;Laminates;Nailedjoints;Particleboards;Plywood;Screwedjoints;Shearstress;Strengthofmaterials;Stress;Structuraldesign;Structuraltimber;Tensilestress;Wood;Woodproducts;Woodbasedsheetmaterials
【摘要】:BS5268-2providesguidanceonthestructuraluseoftimber,gluedlaminatedtimber,plywoodandotherpanelproductsinload-bearingmembers.Itincludesrecommendationsonquality,gradestressesandmodificationfactorsapplicabletothesematerialswhenusedassimplemembers,oraspartsofbuilt-upcomponents,oraspartsofstructureincorporatingothermaterials.Italsogivesrecommendationsforthedesignofnailed,screwed,bolted,dowelled,connectoredandgluedjoints.Inaddition,itprovidesrecommendationsforamethodoftesttoassesstheadequacyofstructuralassemblies,anditincludesgeneraladviceonworkmanship,varioustreatmentswhichcanbeapplied,inspectionandmaintenance.Itdoesnot,anditisnotintendedto,dealcomprehensivelywithallaspectsoftimberconstruction.Inparticularitdoesnotcoverwelltriedandtraditionalmethodsoftimberconstructionwhichhavebeenemployedsuccessfullyoveralongperiodoftime.CompliancewiththestructuraladequacyaspectsoftheBuildingRegulationscanbeachievedbyfollowingtherecommendationsofthisstandardorviaNationalTechnicalApprovalsCertificates.
【中国标准分类号】:P23
【国际标准分类号】:91_080_20
【页数】:184P.;A4
【正文语种】:英语


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基本信息
标准名称:纺织用回转式水过滤器
发布部门:中华人民共和国工业和信息化部
发布日期:2012-12-28
实施日期:2013-06-01
首发日期:
作废日期:
出版社:中国标准出版社
出版日期:2013-06-01
适用范围

本标准规定了纺织用回转式水过滤器的术语和定义、分类和参数、要求、试验方法、检验规则及标志、包装、运输和贮存。
本标准适用于对纺织空调喷淋系统、制冷系统,进行纤尘物过滤的纺织用回转式水过滤器。

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所属分类: 能源 核技术 能源 核技术综合 技术管理 能源和热传导工程 能源和热传导工程综合
【英文标准名称】:Electromagneticcompatibility(EMC)-Part3-13:Limits-AssessmentofemissionlimitsfortheconnectionofunballancedinstallationstoMV,HVandEHVpowersystems
【原文标准名称】:电磁兼容性(EMC).第3-13部分:限值.不平衡装置对MV、HV和EHV动力系统的连接用排放限值的评估
【标准号】:IEC/TR61000-3-13-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-02
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC77A
【标准类型】:()
【标准水平】:()
【中文主题词】:评估;不对称的;定义;电气工程;电磁兼容性;EMC;闪光;低压电源;供电系统;非对称;电压波动
【英文主题词】:Assessment;Asymmetrical;Definitions;Electricalengineering;Electromagneticcompatibility;EMC;Flicker;Lowvoltagemains;Powersupplysystem;Unsymmetry;Voltagefluctuations
【摘要】:ThispartofIEC61000providesguidanceonprincipleswhichcanbeusedasthebasisfordeterminingtherequirementsfortheconnectionofunbalancedinstallations(i.e.three-phaseinstallationscausingvoltageunbalance)toMV,HVandEHVpublicpowersystems(LVinstallationsarecoveredinotherIECdocuments).Forthepurposesofthisreport,anunbalancedinstallationmeansathree-phaseinstallation(whichmaybealoadoragenerator)thatproducesvoltageunbalanceonthesystem.Theconnectionofsingle-phaseinstallationsisnotspecificallyaddressed,astheconnectionofsuchinstallationsisunderthecontrolofthesystemoperatororowner.Thegeneralprincipleshowevermaybeadaptedwhenconsideringtheconnectionofsingle-phaseinstallations.Theprimaryobjectiveistoprovideguidancetosystemoperatorsorownersonengineeringpractices,whichwillfacilitatetheprovisionofadequateservicequalityforallconnectedcustomers.Inaddressinginstallations,thisdocumentisnotintendedtoreplaceequipmentstandardsforemissionlimits.Thereportaddressestheallocationofthecapacityofthesystemtoabsorbdisturbances.Itdoesnotaddresshowtomitigatedisturbances,nordoesitaddresshowthecapacityofthesystemcanbeincreased.Sincetheguidelinesoutlinedinthisreportarenecessarilybasedoncertainsimplifyingassumptions,thereisnoguaranteethatthisapproachwillalwaysprovidetheoptimumsolutionforallunbalancedloadsituations.Therecommendedapproachshouldbeusedwithflexibilityandjudgmentasfarasengineeringisconcerned,whenapplyingthegivenassessmentproceduresinfullorinpart.Thesystemoperatororownerisresponsibleforspecifyingrequirementsfortheconnectionofinstallationswhichmaycauseunbalanceonthesystem.Thedisturbinginstallationistobeunderstoodasthecompletecustomer’sinstallation(i.e.includingbalancedandunbalancedparts).Problemsrelatedtounbalancefallintotwobasiccategories.?Unbalancedinstallationsthatdrawnegative-sequencecurrentswhichproducenegativesequencevoltagesonthesupplysystem.Examplesofsuchinstallationsincludearcfurnacesandtractionloads(typicallyconnectedtothepublicnetworkatHV),andthreephaseinstallationswheretheindividualloadsarenotbalanced(typicallyconnectedatMVandLV).Negative-sequencevoltagesuperimposedontotheterminalvoltageofrotatingmachinescanproduceadditionalheatlosses.Negative-sequencevoltagecanalsocausenon-characteristicharmonics(typicallypositive-sequence3rdharmonic)tobeproducedbypowerconverters.?Unbalancedinstallationsconnectedline-to-neutralcanalsodrawzero-sequencecurrentswhichcanbetransferredornotintothesupplysystemdependingonthetypeofconnectionofthecouplingtransformer.Theflowofzero-sequencecurrentsinagroundedneutralsystemcauseszero-sequenceunbalanceaffectingline-to-neutralvoltages.Thisisnotnormallycontrolledbysettingemissionlimits,butratherbysystemdesignandmaintenance.Ungrounded-neutralsystemsandphase-to-phaseconnectedinstallationsarenot,however,affectedbythiskindofvoltageunbalance.
【中国标准分类号】:L06
【国际标准分类号】:33_100_01
【页数】:44P.;A4
【正文语种】:英语