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【英文标准名称】:StandardPracticeforEstablishingStructuralGradesandRelatedAllowablePropertiesforVisuallyGradedLumber
【原文标准名称】:确立目测分等木材的结构等级及有关允许性能的标准规程
【标准号】:ASTMD245-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D07.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:分类系统;建筑;施工材料;特性;外观检查(试验);木材
【英文主题词】:lumber;solidsawnstructurallumber;structuralgrades;visuallygraded;wood
【摘要】:1.1Thispractice(1,2)coversthebasicprinciplesforestablishingrelatedunitstressesandstiffnessvaluesfordesignwithvisually-gradedsolidsawnstructurallumber.Thispracticestartswithpropertyvaluesfromclearwoodspecimensandincludesnecessaryproceduresfortheformulationofstructuralgradesofanydesiredstrengthratio.1.2Thegradingprovisionsusedasillustrationshereinarenotintendedtoestablishgradesforpurchase,butrathertoshowhowstress-gradingprinciplesareapplied.Detailedgradingrulesforcommercialstressgradeswhichserveaspurchasespecificationsareestablishedandpublishedbyagencieswhichformulateandmaintainsuchrulesandoperateinspectionfacilitiescoveringthevariousspecies.1.3Thematerialcoveredinthispracticeappearsinthefollowingorder:1.4Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q71
【国际标准分类号】:79_040
【页数】:16P.;A4
【正文语种】: