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《ASTM D7931-18 Standard Guide for Specifying Drainage Geocomposites英文版》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、ThisinternationalstandardwasdevelopedinaccordancewithinternationallyrecognizedprinciplesonstandardizationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecommendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.Des
2、ignation:D7931−18StandardGuidefor1SpecifyingDrainageGeocompositesThisstandardisissuedunderthefixeddesignationD7931;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreap
3、proval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scopeservicemustbejudged,norshouldthisguidebeappliedwithoutconsiderationofaproject’smanyuniqueaspects.The1.1Thisguidepresentsaguidelinespecifyingadrainageword‘standard’inthetitleofthisguidemea
4、nsonlythatthegeocompositeproduct;itspecificallyprovidesrecommenda-guidehasbeenapprovedthroughtheASTMInternationaltionstodeterminetheallowableflowrateofacandidateconsensusprocess.drainagegeocomposite.Theresultingvalueisthencomparedtoarequired(ordesign)flowrateforaproduct-specificand1.8T
5、hisstandarddoesnotpurporttoaddressallofthesite-specificfactorofsafety.safetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-1.2Thisguideisintendedtoaiddesigners,purchasers,priatesafety,health,andenvironmentalpracticesanddeter-installe
6、rs,contractors,owners,operators,andagenciesinminetheapplicabilityofregulatorylimitationspriortouse.establishingminimumguidelinesfordrainagegeocomposite1.9Thisinternationalstandardwasdevelopedinaccor-materials.Thisguideisnottobeusedformanufacturer’sdancewithinternationallyrecognized
7、principlesonstandard-qualitycontrolpurposes,noraconstructionqualityassuranceizationestablishedintheDecisiononPrinciplesforthespecification.DevelopmentofInternationalStandards,GuidesandRecom-1.3Thisguidedoesnotaddresstherequired(ordesign)mendationsissuedbytheWorldTradeOrganizationTec
8、hnicalflowratevalue,northes
