热门站点| 世界资料网 | 专利资料网 | 世界资料网论坛
收藏本站| 设为首页| 首页

ASTM B746/B746M-2002(2007) 现场螺栓安装管,管拱用瓦楞铝合金结构标准规范

作者:标准资料网 时间:2024-05-17 23:57:21  浏览:8021   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardSpecificationforCorrugatedAluminumAlloyStructuralPlateforField-BoltedPipe,Pipe-Arches,andArches
【原文标准名称】:现场螺栓安装管,管拱用瓦楞铝合金结构标准规范
【标准号】:ASTMB746/B746M-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:B07.08
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:aluminumstructuralplate;arches;culverts;fieldboltedstructures;pipe;pipearches
【摘要】:1.1Thisspecificationcoverscorrugatedaluminumalloystructuralplateusedintheconstructionofpipe,pipe-arches,arches,underpasses,boxculverts,andspecialshapesforfieldassembly.Appropriatefastenersarealsodescribed.Thepipe,arches,andothershapesaregenerallyusedfordrainagepurposes,pedestrianandvehicularunderpasses,andutilitytunnels.AluminumboxculvertshapesarecoveredinSpecificationB864/B864M.1.2Thisspecificationdoesnotincluderequirementsforbedding,backfill,ortherelationshipbetweenearthcoverloadandplatethicknessofthepipe.Experiencehasshownthatthesuccessfulperformanceofthisproductdependsupontheproperselectionofplatethickness,typeofbeddingandbackfill,controlledmanufactureintheplant,andcareintheinstallation.Thepurchasermustcorrelatetheabovefactorsandalsothecorrosionandabrasionrequirementsofthefieldinstallationwiththeplatethickness.ThestructuraldesignofcorrugatedaluminumstructuralplatepipeandtheproperinstallationproceduresaregiveninPracticesB790/B790MandB789/B789M,respectively.Aprocedureforusinglife-cyclecostanalysistechniquestoevaluatealternatedrainagesystemdesignsusingcorrugatedmetalpipeisgiveninPracticeA930.1.3Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.
【中国标准分类号】:P26
【国际标准分类号】:77_150_10
【页数】:5P.;A4
【正文语种】:


下载地址: 点击此处下载
【英文标准名称】:Informationtechnology-Codingofaudio-visualobjects-Part24:Audioandsystemsinteraction
【原文标准名称】:信息技术.视听对象的编码.第24部分:音频与系统交互作用
【标准号】:ISO/IECTR14496-24-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-01
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:声信号;视听的;视听资料;比特率;代码表示;编码(数据转换);配置;数据交换;数据格式;数据处理;译码器;编码器;编码;文档结构;文档;(数据)格式;信息交换;信息技术;多媒体;音乐;信号
【英文主题词】:Acousticsignals;Audiovisual;Audiovisualmaterials;Bitrates;Codedrepresentation;Coding(dataconversion);Configuration;Dataexchange;Dataformats;Dataprocessing;Decoders;Encoders;Encoding;Filestructure;Files;Formats;Informationinterchange;Informationtechnology;Multimedia;Music;Signals
【摘要】:ThispartofISO/IECTR14496describesthedesiredjointbehaviorofMPEG-4Systems(MPEG-4FileFormat)andMPEG-4Audiocodecs.ItisdesiredthatMPEG-4Audioencodersanddecoderspermitfinitelengthsignalstobeencodedtoafile(particularlyMPEG-4files)anddecodedagaintoobtaintheidenticalsignal,subjecttocodecdistortions.Thiswillallowtheuseofaudioinsystemsimplementations(particularlyMPEG-4Systems),perhapswithothermediasuchasvideo,inadeterministicfashion.Mostimportantly,thedecodedsignalwillhavenothing“extra”atthebeginningor“missing”attheend.Thispermits:a)anexact‘roundtrip’fromrawaudiotoencodedfilebacktorawaudio(exceptingencodingartifacts);b)predictablesynchronizationbetweenaudioandothermediasuchasvideo;c)correctbehaviorwhenperformingrandomaccessaswellaswhenstartingatthebeginningofastream;d)identicalbehaviorwheneditsareappliedintherawdomainandtheencodeddomain(again,exceptingencodingartifacts).Itisalsorequiredthattherebepredictableinteroperabilitybetweenencoders(asrepresentedbyfiles)anddecoders.Therearetwokindsofaudio‘offsets’(or‘delay’inthecontextoftransmission):thosethatresultfromtheencodingprocess,andthosethatresultfromthedecodingprocess.Thisdocumentisprimarilyconcernedwiththelatter.Theseissuesareresolvedbythefollowing:?Thehandlingofcompositiontimestampsforaudiocompositionunitsisspecified.Specialcareistakeninthecaseofcompresseddata,likeHE-AACcodedaudio,thatcanbedecodedinabackwardcompatiblefashionaswellasinanenhancedfashion.?ExamplesaregiventhatshowhowfinitelengthsignalscanbeencodedtoanMPEG-4fileanddecodedagaintoobtaintheidenticalsignal,exceptingcodecdistortions.Mostimportantly,thedecodedsignalhasnothing“extra”atthebeginningor“missing”attheend.
【中国标准分类号】:L71
【国际标准分类号】:35_040
【页数】:8P;A4
【正文语种】:英语


【英文标准名称】:Metallicindustrialpiping-Part1:General;GermanversionEN13480-1:2012
【原文标准名称】:金属工业用管道.第1部分.总则.德文版本EN13480-1-2012
【标准号】:DINEN13480-1-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:分类;分类系统;定义;设计;总论;工业的;工业管道系统;工业;敷设;材料;金属管道;金属材料;金属;使用条件;操作安全性;管联接器;管道;管;管系统;生产;规范(验收);钢管;试验
【英文主题词】:Classification;Classificationsystems;Definitions;Design;Generalsection;Industrial;Industrialpipeworksystems;Industries;Laying;Materials;Metalpipes;Metallicmaterials;Metals;Operatingconditions;Operationalsafety;Pipecouplings;Pipelines;Pipes;Pipingsystem;Production;Specification(approval);Steelpipes;Testing
【摘要】:
【中国标准分类号】:
【国际标准分类号】:23_040_01
【页数】:19P;A4
【正文语种】:德语



版权声明:所有资料均为作者提供或网友推荐收集整理而来,仅供爱好者学习和研究使用,版权归原作者所有。
如本站内容有侵犯您的合法权益,请和我们取得联系,我们将立即改正或删除。
京ICP备14017250号-1