【英文标准名称】:StandardTestMethodforFieldMeasurementofRaisedRetroreflectivePavementMarkersUsingaPortableRetroreflectometer
【原文标准名称】:使用便携式反射计现场测量凸起的反射路面标记的标准试验方法
【标准号】:ASTME1696-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E12.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:指示器;路面
【英文主题词】:portableretroreflectometers;raisedretroreflectivepavementmarkers;retroreflection
【摘要】:MeasurementsofRImadebythistestmethod,withthe0.2x00B0;observationangle,arerelatedtovisualobservationofraisedretroreflectivepavementmarkersatdistancesofapproximately220m(720ft)forcarsorapproximately440m(1440ft)fortruckswhenilluminatedbytungstenfilamentlightsourcessuchascarheadlights.Therearesomecastingsthatblockvehicleilluminationofaportionofthemarkermountedwithinit.Inthiscase,measuredRIcanbesignificantlylowerthanwhenthemarkerisphotometeredoutsidethecasting,butwillcorrespondtothevisualobservation.Thetestmethodisnotapplicabletoraisedpavementmarkersmountedindepressionscutintothepavement.Thecoefficientofluminousintensityofraisedretroreflectivepavementmarkersdegradeswithtrafficwearandrequiresperiodicmeasurementtoensurethatsufficientvisibilityisprovidedtothedriver.Thequalityofthepavementmarkersastomaterialsused,ageandwearpattern,willhaveaneffectonthecoefficientof(retroreflected)luminousintensity.Theseconditionsneedtobeobservedandnotedbytheuser.1.1Thistestmethodcoversthemeasurementoftheretroreflectivepropertiesofraisedretroreflectivepavementmarkersataprescribedgeometry,bymeansofaportableretroreflectometerthatcanbeusedinthefield.Themeasurementscanbecomparedtominimumrequirementstodeterminetheneedforreplacement.1.2TheobservationanglespecifiedforretroreflectometersinthistestmethodisthatcurrentlyspecifiedforraisedpavementmarkersintheUnitedStatesandmaydifferfromtheanglesusedelsewhere.Forotherjurisdictions,replacetheobservationsanglespecifiedhereinwiththeobservationanglespecifiedbythepertinentagency.1.3Thistestmethodisintendedtobeusedforfieldmeasurementofraisedretroreflectivepavementmarkersbutmayalsobeusedtomeasuretheperformanceofnewmarkersbeforetheyareplacedinthefield.1.4Thistestmethodcoversmeasurementsofraisedpavementmarkersmountedonaroadsurfaceormountedinsnow-plowablemetalcastings.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thestandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P66
【国际标准分类号】:93_080_20
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Laboratoryfumecupboards-Recommendationsforselection,useandmaintenance
【原文标准名称】:实验室排烟橱.选择、使用和维护推荐标准
【标准号】:BS7258-3-1994
【标准状态】:作废
【国别】:英国
【发布日期】:1994-04-15
【实施或试行日期】:1994-04-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:通风柜橱;实验室设备;安全措施;实验室装备;维修;职业安全;卫生和安全要求;选择
【英文主题词】:Fumecupboards;Healthandsafetyrequirements;Laboratoryequipment;Laboratoryfurniture;Maintenance;Occupationalsafety;Safetymeasures;Selection
【摘要】:TobereadinconjunctionwithBS7258-1
【中国标准分类号】:N60
【国际标准分类号】:71_040_10
【页数】:16P.;A4
【正文语种】:英语