Designation:F645−15aStandardGuideforSelection,Design,andInstallationofThermoplasticWater-PressurePipingSystems1ThisstandardisissuedunderthefixeddesignationF645;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisguideisintendedforuseintheselection,design,andinstallationofthermoplasticwatersystemsforuseoutsidebuildings.Forspecificprojects,athoroughreviewofthisguideisrecommendedforthepurposeofselectingspecificmaterials,methodsofjoining,systemdesignfactor,andanyspecialproceduresdeemednecessarytoassureasatisfactorysystem.1.2Itisrecommendedthatgoverningcodesandprojectspecificationsbeconsultedpriortotheuseofthisguide.Nothinginthisguideshouldbeconstruedasrecommendingpracticesorsystemsatvariancewithgoverningcodesandprojectspecifications.1.3Units—ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.Thepipe,fittings,andjoiningmaterialsshallmeettherequirementsofoneormoreofthefollowingcomponentproductstandardslistedin1.3.1through1.3.4totheextentapplicable.Thosepipestandardsfollowedby(a)areoutsidediameter-controlledpipes.Thosefollowedby(b)areinsidediameter-controlledpipes.1.3.1Forpoly(vinylchloride)(PVC)plasticpipingcompo-nents:TitleofSpecificationASTMDesignationPoly(VinylChloride)(PVC)PlasticPipe,Schedules40,80and120(a)D1785Poly(VinylChloride)(PVC)PlasticPipe(SDR-PR)(a)D2241ThreadedPoly(VinylChloride)(PVC)PlasticPipeFittings,Schedule80D2464Poly(VinylChloride)(PVC)PlasticPipeFittings,Schedule40D2466Socket-TypePoly(VinylChloride)(PVC)PlasticPipeFittings,Schedule80D2467SolventCementsforPoly(VinylChloride)(PVC)PlasticPipeandFittingsD2564Bell-EndPoly(Viny...
