Approved Document A

About Approved Document A

Approved Document A gives guidance on the structural safety of buildings. It covers loading, ground movement and the risk of disproportionate collapse, with detailed sections for sizing structural elements in certain small residential and traditional buildings.

What it covers

• Loads on a building and the codes and standards used for structural design
• Ground movement caused by swelling, shrinkage or subsidence
• Resistance to disproportionate collapse
• Sizes of timber members in floors and roofs for dwellings
• Thickness and stability of walls in certain small buildings