基本信息
| 标准名称： | 钢质渔船鱼舱口 |
| 发布部门： | 中华人民共和国农业部 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 2000-02-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 提出单位： | 中国水产科学研究所 |
| 归口单位： | 中国水产科学研究所 |
| 起草单位： | 中国水产科学研究所 |
| 起草人： | 魏广东 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2000-02-01 |
| 页数： | /页数：/字数： |
适用范围
本标准规定了钢质渔船鱼舱口的分类、型式、尺寸、技术要求等。
本标准适用于船长不小于24m但小于90m，肋距为0.50m、0.55m、0.60m的钢质渔船鱼舱口的设计与施工。对于肋距不等于0.50m、0.55m、0.60m，或要求特殊鱼舱口的渔船，亦可参照本标准的结构型式决定所需舱口的尺寸。
前言
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目录
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引用标准
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所属分类： 农业 林业 农 林机械与设备 渔业机械与设备
【英文标准名称】:StandardTestMethodforDensityofSoilinPlacebytheDrive-CylinderMethod
【原文标准名称】:传动缸法测定现场土壤密度的标准试验方法
【标准号】:ASTMD2937-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D18.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compactioncontrol;densitytesting;drivecylinder;drivecylindertest;fielddensity;in-placedensity;plugsampler;qualitycontrol;subsurfacesampler;surfacesampler;unitweight;Backfill--testing;Subsurfaceinvestigation--soil/rock;S
【摘要】:Thistestmethodcanbeusedtodeterminethein-placedensityofsoilswhichdonotcontainsignificantamountsofparticlescoarserthan4.75mm(3/16in.),andwhichcanbereadilyretainedinthedrivecylinder.Thistestmethodmayalsobeusedtodeterminethein-placedensityofcompactedsoilsusedinconstructionofstructuralfill,highwayembankments,orearthdams.Whenthein-placedensityistobeusedasabasisforacceptance,thedrivecylindervolumesmustbeaslargeaspracticalandnotlessthan850cm3(0.030ft3).Thistestmethodisnotrecommendedforuseinorganicorfriablesoils.Thistestmethodmaynotbeapplicableforsoft,highlyplastic,noncohesive,saturatedorothersoilswhichareeasilydeformed,compressduringsampling,orwhichmaynotberetainedinthedrivecylinder.Theuseofthistestmethodinsoilscontainingparticlescoarserthan4.75mm(3/16in.)mayresultindamagetothedrivecylinderequipment.Soilscontainingparticlescoarserthan4.75mm(3/16in.)maynotyieldvalidresultsifvoidsarecreatedalongthewallofcylinderduringdriving,orifparticlesaredislodgedfromthesampleendsduringtrimming.Thegeneralprinciplesofthistestmethodhavebeensuccessfullyusedtoobtainsamplesofsomefieldcompactedfine-grainedsoilshavingamaximumparticlesizeof4.75mm(3/16in.)forpurposesotherthandensitydeterminations,suchasthetestingforengineeringproperties.Note18212;Notwithstandingthestatementsonprecisionandbiascontainedinthisstandard:Theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesused.AgencieswhichmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthismethodarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliabletesting.Reliabletestingdependsonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthedeterminationofin-placedensityofsoilbythedrive-cylindermethod.Thetestmethodinvolvesobtainingarelativelyintactsoilsamplebydrivingathin-walledcylinderandthesubsequentactivitiesforthedeterminationofin-placedensity.Whensamplingorin-placedensityisrequiredatdepth,TestMethodD1587shouldbeused.1.2Thistestmethodisnotappropriateforsamplingorganicsoilswhichcancompressuponsampling,veryhardnaturalsoilsandheavilycompactedsoilswhichcannotbeeasilypenetratedbythedrivesampler,soilsoflowplasticitywhichwillnotbereadilyretainedinthecylinder,orsoilswhichcontainappreciableamountsofgravel(particlescoarserthan4.75mm(3/16in.)).Thepresenceofparticlescoarserthan4.75mm(3/16in.)mayintroducesignificanterrorsindensitymeasurementsbycausingvoidsalongthewallofthecylinderduringdriving,andwhencoarsematerialshavetobedislodgedbythetrimmingofthesampleobtainedbythecylinder.1.3Thistestmethodislimitedtotheproceduresnecessaryforobtainingspecimenssuitablefordeterminingthein-placedensi......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:8P.;A4
【正文语种】:英语