external masonry walls（nhbc）

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1、-.I~NATIONALHOUSE-BUILDINGCOUNCILINTRODUCTIONTHESTANDARDSCONTENTSClausePage0TheNHBCStandardsgive:DESIGNDesignstandardD110TechnicalRequirementsirStatutoryrequirementsD210PerformanceStandardsindarkblueStructuraldesignD310GuidanceinlightblueExposureD42forthedesignandconstructionofdwellingsMortarD54ac

2、ceptabletoNHBC.TheTechnicalRequirementsareDamp-proofcoursesandcavitytraysD65giveninChapter1.1andthesemustbemetbytheWalltiesD76builder.StonemasonryD86LintelsD96Diagramsmaycontaintextinred.ThisistohighlightThermalinsulationDlO-D118pointsbuthasnomandatorysignificance.FiresafetyD129SoundinsulationD139

3、TheStandardscomeintoeffectforeveryNHBCCladdingsD14registeredhomewhosefoundationsareconcretedonRenderingD15orafterthepublicationdateshownonthecoverofProvisionofinformationD16-Dl711eachChapterandapplythroughouttheUK,unlessotherwisestated.MATERIALSMaterialsstandardsM112COMPOSITIONOFTHESTANDARDSBricks

4、M212TheStandardsaredividedinto10Parts,eachBlocksM312coveringaparticularaspect.ThePartsfollowtheStonemasonryM413usualconstructionprocess.MortarandrenderingM513Ingeneral,eachChapterismadeupofsectionsDpcmaterialsM613dealingwithDesign,MaterialsandSitework.WalltiesM714Insomecasesoneormoreoftheseaspects

5、maynotLintelsM814beincluded.ThermalinsulationM914CladdingmaterialsM1014MovementjointsM1115SCOPESITEWORKThisChaptergivesguidanceonmeetingtheTechnicalRequirementsandrecommendationsforexternalSiteworkstandards8116masonrywalls.Constructions216Stonemasonry5319NHBCStandardsdonotcoveraspectsofhealthandDa

6、mp-proofcoursesandcavitytrays5419safetyrelatingtobuildingoperationsnortotheWallties5522handlinganduseofcertainbuildingmaterials.SuchLintels56mattersarecoveredbystatutoryrequirements.Thermalinsulation87;;26Rendering88Coldweatherworking8927FINDINGINFORMATIONHandlingandprotections1027Thefollowingexam

7、plegivesguidanceonhowtofindinformationonaparticularsubject:APPENDIX6.1-AStatutoryreferences29Forexample:6.1-S2(b)means:APPENDIX6.1-BSuitablewallconstructions306Part6Superstructure(excludingroofs)APPENDIX6.1-CArea