Designation:E2238−12StandardGuideforEvacuationRouteDiagrams1ThisstandardisissuedunderthefixeddesignationE2238;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisstandardisintendedtoprovideminimumguide-linesforthedesignandplacementofevacuationroutedia-grams(ERDs)usedinbuildings.Itcoverstheevacuationofbuildingoccupantswhendirectedbyemergencyresponseauthoritiesinemergenciessuchasfire,earthquake,andbombthreat.NOTE1—Evacuationfromthefacilityisnotappropriateinallemer-gencies.Forexample,atornadoorareleaseofhazardousmaterialsmayrequireshelteringwithinthebuilding.Thisdiagramstandardisintendedtobeusedinconjunctionwithafacilityemergencyplanandinstructionsonappropriateactionsfrombuildingmanagement,oremergencyresponseauthorities,orboth.2.ReferencedDocuments2.1ASTMStandards:2E2072SpecificationforPhotoluminescent(Phosphorescent)SafetyMarkings2.2OtherStandards:NFPA101LifeSafetyCode®(SafetytoLifefromFireinBuildingsandStructures)3NFPA170StandardforFireSafetyandEmergencySym-bols3UL1994StandardforLuminousEgressPathMarkingSys-tems4ICC/ANSIA117.1StandardforAccessibleandUsableBuildingsandFacilities5FEMAGuideline:GuidanceonPlanningforIntegrationofFunctionalNeedsSupportServicesinGeneralPopulationSheltersNovember2010.3.Terminology3.1Definitions:3.1.1areaofrefuge—anareathatiseither(1)astoryinabuildingwherethebuildingisprotectedthroughoutbyanapproved,supervisedautomaticsprinklersystemandhasnotlessthantwoaccessibleroomsorspacesseparatedfromeachotherbysmoke-resistingpartitions;or(2)aspacelocatedinapathoftravelleadingtoapublicwaythatisprotectedfromtheeffectsoffire,eitherbymeansofseparationfromotherspacesinthesamebuildingorbyvirtueoflocation,therebypermit-tingadelayinegresstravelfromanylevel.NOTE2—Anareaofrefugeisintendedforusebyimpairedpersonsawaitingrescuebytrainedemergen...
