Good craftsmanship Guide Foundations

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good craftsmanship GuideFoundations, Substructures and Ground FloorsThis good craftsmanship Guidehighlights key problems withfoundations, substructures and groundfloors and gives guidance on how toavoid them. The problems are thosemost commonly identified during NHBC sinspection of homes under photographs are of defects and weretaken on real building Guide , based on the NHBCStandards, is intended for use by NHBC registered builders andinspection staff. NHBC 2004No reproduction without NHBC prior permission in (strip and trench fill)Foundation depth2Building near trees4Setting out (foundation)6Excavation8Heave precautions11Concreting13SubstructureSet ting out (substructure)16Position of DPC17Access and thresholds18Drains/service entries20Ground bearing floorsGround below fill22Fill supporting ground bearing slabs24Damp-proofing25Insulation27Suspen ded ground floors - blockand beam and precast planksDPC position28Heave precautions29Ventilation of underfloor voids30Bearings31Radon and other ground gases32Contents1Foundation depth2What to do: excavate foundation to design depth (refer toAppendix of NHBC Standards when building onclay soil near trees)Problem to avoid.

This Good Craftsmanship Guide highlights key problems with foundations, substructures and ground floors and gives guidance …

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