This publication addresses the design of houses and residential buildings in the context of the Building Regulations in England and Wales. It presents means of satisfying the Regulations when using light steel framing and gives appropriate design tables and details. It is not an Approved Document to the Building Regulations but gives best practice in this developing technology. The publication is supplemented by other SCI publications in the series listed in Section 11. Sections 2 and 3 present general principles and the later sections demonstrate details which satisfy these principles.