【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
基本信息
| 标准名称： | 机车、动车用电笛、风笛 第1部分：电笛 |
| 发布部门： | 中华人民共和国铁道部 |
| 发布日期： | 2009-11-11 |
| 实施日期： | 2010-05-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国铁道出版社 |
| 出版日期： | 2010-05-01 |
适用范围
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前言
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引用标准
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所属分类： 工程建设 工程结构 桥涵工程