MIL-HDBK-415A
时间:2024-05-12 10:15:10 来源: 标准资料网 作者：标准资料网 阅读：8412
MIL-HDBK-415A, MILITARY HANDBOOK DESIGN HANDBOOK FOR FIBER OPTIC COMMUNICATIONS SYSTEMS. The purpose of this handbook is to provide uniform Department of Defense (DoD) guidelines for communication engineers, and installation, operation, and maintenance personnel working with fiber optic communication systems.
【英文标准名称】:Soilquality-Determinationofhydraulicconductivityofsaturatedporousmaterialsusingarigid-wallpermeameter
【原文标准名称】:土质.用刚性壁渗透计测定饱和疏松材料的水渗透性
【标准号】:ISO17312-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-03
【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/TC190
【标准类型】:()
【标准水平】:()
【中文主题词】:水渗透性;渗透计;数学计算;疏松材料;水分保持值;含水量;土壤组分;土壤;土壤普查;土壤采样;容器;定义;测量;保持指数;试验
【英文主题词】:Compositionoftheground;Definitions;Mathematicalcalculations;Measurement;Permeameters;Porousmaterials;Reductionefficiencies;Retentionindex;Soilsampling;Soilsurveys;Soils;Testing;Waterconductivity;Watercontent;Waterretentionvalue
【摘要】:ThisInternationalStandardspecifiesthedeterminationofthehydraulicconductivityofgranularsoils(e.g.sandandgravel)usingaconstant-headmethodinvolvingarigid-wallpermeametertomeasurethelaminarflowofwater.Theprocedureestablishesrepresentativevaluesofthehydraulicconductivityofgranularsoilsthatcanoccurinnaturaldepositsasplacedinembankments,orwhenusedasbasecoursesunderpavements.Inordertolimitconsolidationinfluencesduringtesting,thisprocedureisapplicableonlytodisturbedgranularsoilscontainingnotmorethan10%soilpassinga75-μmsieve.Thisprocedureisapplicabletothemeasurementofhydraulicconductivityofcompactedsamplesofsandsandgravelscontaininglittleornosilt,whereflowalongtherigidwallofthepermeameterhasnopracticalimplicationsonthetestresults.ThisInternationalStandardisnotapplicabletosiltandclay,whereseepage/flowattheboundariesisnotacceptable.
【中国标准分类号】:Z18
【国际标准分类号】:13_080_40
【页数】:11P.;A4
【正文语种】:英语