ANSI/ASTM D2774-2008 热塑压力管地下安装用实施规程

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【英文标准名称】:PracticeforUndergroundInstallationofThermoplasticPressurePiping
【原文标准名称】:热塑压力管地下安装用实施规程
【标准号】:ANSI/ASTMD2774-2008
【标准状态】:作废
【国别】:美国
【发布日期】:2008-03-25
【实施或试行日期】:2008-03-25
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:管;塑料;热塑性聚合物
【英文主题词】:Pipes;Plastics;Thermoplasticpolymers
【摘要】:ThispracticegovernsproceduresandreferencesASTMspecificationsforundergroundinstallationofthermoplasticpressurepiping,63-in.(1372-mm)nominalsizeandsmaller.Itisbeyondthescopeofthispracticetodescribetheseproceduresindetailsinceitisrecognizedthatsignificantdifferencesexistintheirimplementationdependingonkindandtypeofpipematerial,pipesizeandwallthickness,soilconditions,andthespecificenduse.Thispracticeassumesthatovertherangeofanticipatedoperatingconditions,includingmaximumexternalloadingandminimuminternalpressure,thesoil/pipesystemwilloffersufficientstructuralstabilitytoresistpossibleexcessivediametricaldeformation,orevencollapse.Incases,particularlywithlargediameterthinner-walledpipe,forwhichthevalidityofthisassumptionmaybeinquestion,theselectionofpipeandrecommendedinstallationconditionsshallbedeterminedbyaqualifiedengineer.Specificpipecharacteristicsandend-userequirementsshalldictateadditionto,ormodificationoftheproceduresstatedorreferencedherein.Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSections10and11.
【中国标准分类号】:P94
【国际标准分类号】:23_040_20
【页数】:
【正文语种】:英语