【英文标准名称】:TestMethodforDeterminationofOrganicallyCombinedSulfuricAnhydridebyExtractionTitration,TestMethodB
【原文标准名称】:用萃取滴定法(试验方法B)测定有机结合的三氧化硫的试验方法
【标准号】:ASTMD5351-1993
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:三氧化硫;化学分析和试验;试验
【英文主题词】:testing;chemicalanalysisandtesting;sulphurtrioxide
【摘要】:
【中国标准分类号】:G04
【国际标准分类号】:71_080_50
【页数】:2P;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforStructuralDesignofThermoplasticCorrugatedWallStormwaterCollectionChambers
【原文标准名称】:热塑波纹壁雨水收集室结构设计的标准实施规程
【标准号】:ASTMF2787-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:F17.65
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:chamber;corrugated;creep;localbuckling;stormwater;structuraldesign;thermoplastic
【摘要】:Thispracticeprovidesarationalmethodforstructuraldesignofthermoplasticstormwaterchambers.Theloads,capacities,andlimitstatesarebasedonacceptedloadandresistancefactordesignforthermoplasticpipes;however,existingdesignspecificationsforthermoplasticpipesdonotadequatelyaddressthedesignofchambersdueto(1)open-bottomgeometry,(2)supportonintegralfoot,(3)varyingcircumferentialcorrugationgeometry,and(4)manufacturewithalternativethermoplasticresin.Thispracticestandardizesrecommendationsfordesignerstoadequatelyaddresstheseaspectsofchamberdesign.Thispracticeiswrittentoallowchambermanufacturerstoevaluatechambersmeetingexistingclassificationsandtodesignchambersfornewclassificationsastheyaredeveloped.1.1Thispracticestandardizesstructuraldesignofthermoplasticcorrugatedwallarch-shapedchambersusedforcollection,detention,andretentionofstormwaterrunoff.Thepracticeisforchambersinstalledinatrenchorbedandsubjectedtoearthandliveloads.Structuraldesignincludesthecompositesystemmadeupofthechamberarch,thechamberfoot,andthesoilenvelope.Relevantrecognizedpracticesincludedesignofthermoplasticculvertpipesanddesignoffoundations.1.2Thispracticestandardizesmethodsformanufacturersofburiedthermoplasticstructurestodesignforthetimedependentbehaviorofplasticsusingsoilsupportasanintegralpartofthestructuralsystem.Thispracticeisnotapplicabletothermoplasticstructuresthatdonotincludesoilsupportasacomponentofthestructuralsystem.1.3Thispracticeislimitedtostructuraldesignanddoesnotprovideguidanceonhydraulic,hydrologic,orenvironmentaldesignconsiderationsthatmayneedtobeaddressedforfunctionaluseofstormwatercollectionchambers.1.4Stormwaterchambersaremostcommonlyembeddedinopengraded,angularaggregatewhichprovidebothstructuralsupportandopenporosityforwaterstorage.Shouldsoilsotherthanopengraded,angularaggregatebespecifiedforembedment,otherinstallationandfunctionalconcernsmayneedtobeaddressedthatareoutsidethescopeofthispractice.1.5Chambersareproducedinarchshapestomeetclassificationsthatspecifychamberrise,chamberspan,minimumfootwidth,minimumwallthickness,andminimumarchstiffnessconstant.Chambersaremanufacturedwithintegralfootings.1.6PolypropylenechamberclassificationsarefoundinSpecificationF2418.SpecificationF2418alsospecifieschambermanufactureandqualification.1.7Thispracticeisapplicabletodesignininch-poundunits.TheSIunitsinparenthesisaregivenforinformationonly.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q81
【国际标准分类号】:83_140_99
【页数】:26P.;A4
【正文语种】:英语