JIS A5335-1987 离心浇注预应力混凝土桩
时间:2024-05-13 02:27:08 来源: 标准资料网 作者：标准资料网 阅读：8022
【英文标准名称】:Pretensionedspunconcretepiles
【原文标准名称】:离心浇注预应力混凝土桩
【标准号】:JISA5335-1987
【标准状态】:作废
【国别】:日本
【发布日期】:
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JISC)
【起草单位】:Architecture
【标准类型】:()
【标准水平】:()
【中文主题词】:桩;先张法预应力混凝土
【英文主题词】:piles
【摘要】:
【中国标准分类号】:Q72
【国际标准分类号】:
【页数】:18P;A4
【正文语种】:日语
【英文标准名称】:StandardPracticeforthePredictionofContaminantAdsorptionOnGACInAqueousSystemsUsingRapidSmall-ScaleColumnTests
【原文标准名称】:用快速小刻度柱测试法预测水系中粒状活性炭污染物吸附的标准方法
【标准号】:ASTMD6586-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D28.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:barriersystems;detentionandcorrectionalfacilities
【摘要】:Granularactivatedcarbon(GAC)iscommonlyusedtoremovecontaminantsfromwater.Howeverifnotusedproperly,GACcannotonlybeexpensivebutcanattimesbeineffective.Thedevelopmentofengineeringdataforthedesignoffull-scaleadsorbersoftenrequirestime-consumingandexpensivepilotplantstudies.Thisrapidstandardpracticehasbeendevelopedtopredictadsorptioninlarge-scaleadsorbersbaseduponresultsfromsmallcolumntesting.Incontrasttopilotplantstudies,thesmall-scalecolumntestpresentedinthispracticedoesnotallowforarunningevaluationoffactorsthatmayaffectGACperformanceovertime.Suchfactorsmayinclude,forexample,anincreasedremovaloftargetcompoundsbybacterialcolonizingGACorlongtermfoulingofGACcausedbyinorganiccompoundsorbackgroundorganicmatter.Nevertheless,thispracticeoffersmorerelevantoperationaldatathanisothermtestingwithouttheprincipaldrawbacksofpilotplantstudies,namelytimeandexpense;andunlikepilotplantstudies,smallscalestudiescanbeperformedinalaboratoryusingwatersampledfromaremotelocation.Thispracticeknownastherapidsmall-scalecolumntest(RSSCT)usesemptybedcontacttime(EBCT)andhydraulicloadingtodescribetheadsorptionprocess.MeancarbonparticlediameterisusedtoscaleRSSCTresultstopredicttheperformanceofafull-scaleadsorber.Thispracticecanbeusedtocomparetheeffectivenessofdifferentactivatedcarbonsfortheremovalofcontaminantsfromacommonwaterstream.1.1Thispracticecoversatestmethodfortheevaluationofgranularactivatedcarbon(GAC)fortheadsorptionofsolublepollutantsfromwater.Thispracticecanbeusedtoestimatetheoperatingcapacitiesofvirginandreactivatedgranularactivatedcarbons.Theresultsobtainedfromthesmall-scalecolumntestingcanbeusedtopredicttheadsorptionoftargetcompoundsonGACinalargecolumnorfullscaleadsorberapplication.1.2Thispracticecanbeappliedtoalltypesofwaterincludingsyntheticallycontaminatedwater(preparedbyspikinghighpuritywaterwithselectedcontaminants),potablewaters,industrialwastewaters,sanitarywastesandeffluentwaters.1.3Thispracticeisusefulforthedeterminationofbreakthroughcurvesforspecificcontaminantsinwater,thedeterminationofthelengthsoftheadsorbatesmasstransferzones(MTZ)andthepredictionofGACusageratesforlargerscaleadsorbers.1.4Thefollowingsafetycaveatappliestotheproceduresection,Section10,ofthispractice:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G13
【国际标准分类号】:91_090
【页数】:6P.;A4
【正文语种】:英语
【英文标准名称】:BroadbandTwistedPairCableAircore,PolyolefinInsulated,CopperConductor
【原文标准名称】:聚烯烃绝缘铜导体空心宽频双扭线电缆
【标准号】:ANSI/ICEAS-98-688-2006
【标准状态】:作废
【国别】:美国
【发布日期】:2007-01-04
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:NEMA(ASCC8)
【标准类型】:()
【标准水平】:()
【中文主题词】:宽带网络;同轴电缆;铜导线;绝缘电缆;电信
【英文主题词】:Broadbandnetwork;Coaxialcables;Copperconductors;Insulatedcables;Telecommunications
【摘要】:Coversmechanicalandelectricalrequirementsforaircorebroadbandtwistedpairtelecommunicationscablewithpolyolefininsulatedcopperconductors,intendedtosupplybroadbandservicesfromtheremoteswitchtothecustomerpremises.
【中国标准分类号】:K13
【国际标准分类号】:33_120_10
【页数】:
【正文语种】:英语