【英文标准名称】:StandardGuideforSelectionofWeirsandFlumesforOpen-ChannelFlowMeasurementofWater
【原文标准名称】:用于明渠水流量测量的溢流堰和斜槽的选择的标准指南
【标准号】:ASTMD5640-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:D19.07
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:flumes;open-channelflow;waterdischarge;weirs;Flowandflowrate--water;Flumes;Openchannelflow--wastewater;Openchannelflow--water;Selectionguides--testprocedures;Wastewatertesting/treatment;Waterdischarge/velocity;Weirs
【摘要】:Eachtypeofweirandflumepossessesadvantagesanddisadvantagesrelativetotheothertypeswhenitisconsideredforaspecificapplication;consequently,theselectionprocessofteninvolvesreachingacompromiseamongseveralfeatures.Thisguideisintendedtoassisttheuserinmakingaselectionthatishydraulically,structurally,andeconomicallyappropriateforthepurpose.Itisrecognizedthatnotallopen-channelsituationsareamenabletoflowmeasurementbyweirsandflumesandthatinsomecases,particularlyinlargestreams,dischargesmaybestbedeterminedbyothermeans.(See6.2.2.)1.1Thisguidecoversrecommendationsfortheselectionofweirsandflumesforthemeasurementofthevolumetricflowrateofwaterandwastewaterinopenchannelsunderavarietyoffieldconditions.1.2ThisguideemphasizestheweirsandflumesforwhichASTMstandardsareavailable,namely,thin-plateweirs,broad-crestedweirs,Parshallflumes,andPalmer-Bowlus(andotherlong-throated)flumes.However,referenceisalsomadetoothermeasurementdevicesandmethodsthatmaybeusefulinspecificsituations.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P12
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语