Occupant capacity of a building or space
The building regulations Approved Document B2, ‘Fire safety: Buildings other than dwellinghouses’, defines the occupant capacity of a room, storey, building or part of a building as:
- The maximum number of persons it is designed to hold; or
- The number calculated by dividing the area of room or storey(s) (m²) by a floor space factor (m² per person) such as those given in Table C1 of the approved document for guidance.
Note: The area excludes stair enclosures, lifts, sanitary accommodation and any other fixed part of the building structure (but counters and display units, etc, should not be excluded).
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
CIOB photography competition is open for entries.
ECA Edmundson apprentice of the year award
Finalists announced.
Major new study exposes serious knowledge gaps.
Generating energy from internal light as well as sunshine.
ECA welcomes plans to strengthen subcontractor quality control.
Combining mid-career qualifications with experience broadens career opportunities.
Why being a mentor can help your career.
Channel 4 broadcaster to host 125th anniversary ceremony.
Listed structures on the rail network
Heritage interests and operational requirements must be balanced.
Historic England publishes research into embodied carbon when retrofitting traditional buildings.
New Prime Minister delivers on ECA call for cut in electricity costs.
CIOB reacts to the announcement of Andy Burnham as Prime Minister.


















