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1、2009NATIONALSTANDARDPLUMBINGCODEPublishedByPLUMBING-HEATING-COOLINGCONTRACTORS—NATIONALASSOCIATIONAllinquiriesorquestionsrelatingtointerpretationshouldbeforwardedtoCodeSecretariat180S.WashingtonSt.,P.O.Box6808FallsChurch,VA22046-11481-800-813-7061©2009Plumbing-Heating-CoolingCo
2、ntractors–NationalAssociationToorderadditionalbookscall1-800-533-7694(ifcallingfromNewJerseycall1-800-652-7422)ThirdPrinting–January2010NATIONALSTANDARDPLUMBINGCODETitle:NationalStandardPlumbingCodeScope:Thedevelopmentofarecommendedcodeofplumbingpractice,design,andinstallation,
3、includingtheestablishmentofperformancecriteriapredicatedontheneedforprotectionofhealthandsafetythroughproperdesign,installation,andmaintenanceofplumbingsystems.Thisscopeexcludesthedevelopmentofspecicstandardsrelatedtothecomposition,dimensions,and/ormechanicalandphysicalpropert
4、iesofmaterials,xtures,devices,andequipmentusedorinstalledinplumbingsystems.Purpose:Toprovidepracticesandperformancecriteriafortheprotectionofhealthandsafetythroughproperdesignandinstallationofplumbingsystems.Exceptions:Incaseofpracticaldifculty,unnecessaryhardshipornewdevelop
5、ments,exceptionstotheliteralrequirementsmaybegrantedbytheAuthorityHavingJurisdictiontopermittheuseofotherdevicesormethods,butonlywhenitisclearlyevidentthatequivalentprotectionistherebysecured.Disclaimer:PHCCisnotresponsibleorliableforanypersonalinjury,property,orotherdamagesofa
6、nynaturewhatsoeverdirectlyorindirectlyresultingfromthepublication,useof,orrelianceontheNationalStandardPlumbingCodeoritsSupplements.PHCCalsomakesnoguar-anteeorwarrantyastotheaccuracyorcompletenessofanyinformationpublishedherein.iiiFOREWORDSinceitsfoundingastheNationalAssociatio
7、nofMasterPlumbersin1883,theNationalAssociationofPlumbing-Heating-CoolingContractorshasmaintainedaseriousinterestinplumbingstandards,codesandgoodplumbingdesignpractices.TheAssociationpublishedtheNAMP"StandardPlumbingCode"in1933andfurnishedrevisededitionsuntil1942.NAPHCCparticipa
8、tedinthedevelopmentofspecialstandardsforwartimeplumbin
