This document is the 2013 edition, based on the original 2004 edition and incorporating amendments made in 2010 and 2013. Main changes made by the 2013 amendments: references to British Standard design standards; guidance on disproportionate collapse; wind maps; guidance on strip footings; materials and workmanship. There have been no changes to Part A of Schedule 1 to the Building Regulations. This approved document gives guidance for compliance with the Building Regulations for building work carried out in England.