In forceStructure & Site
Approved Document A: Structure
Loading, ground movement and disproportionate collapse
Sets out how buildings should be designed and constructed so that loads are safely carried, ground movement is accommodated and disproportionate collapse is avoided.
Also known as: AD A, Approved Document A
Key requirements
- Covers loading, ground movement and the structural behaviour of buildings.
- Gives guidance on disproportionate collapse for buildings of different occupancy and height.
- Structural designs are commonly verified against the Eurocodes and supporting British Standards.
- Applies to new buildings, extensions and structural alterations.
Performance at a glance
- Design basis
- Eurocodes + UK National Annexes
- Key risk
- Progressive / disproportionate collapse
Applies to
New buildings, extensions and structural alterations in England.
Related records
Reviewed 25 October 2026. This summary is an editorial reference, not legal advice. Check the current official text and confirm the approach with building control before relying on it. Browse all 35 records.