- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 12 Nov 2020
- Prevents the rapid spread of fire which could trap the occupants of a building.
- Reduces the likelihood of fires growing and creating a danger to occupants, fire and rescue services, and people in the vicinity of the building.
- Limits the damage caused to a building and its contents.
Compartment floors are required to provide a minimum degree of fire resistance as set out in Appendix A of Approved document B2 and Appendix A of Approved document B1 (for dwellinghouses). This fire resistance is generally expressed in terms of the number of minutes of resistance that must be provided. Methods for testing fire resistance are set out in BS 476 Fire tests.
Joints between compartment floors should be fire-stopped to maintain the continuity of resistance; and openings for timber beams, joists, purlins and rafters, and pipes, ducts, conduits or cables that pass through any part of a compartment floor should be kept as few in number as possible, kept as small as practicable; and should be fire-stopped. See Fire stopping for more information.
 Related articles on Designing Buildings Wiki
Featured articles and news
An introduction to the 5 core principles of lean.
Can the profession use its skills to save the world from climate change?
How faulty science resulted in sanitation reform.
Improving facilities, accessibility and overall appearance.
Free download of TG 12/2021 available.
TESP works with The Youth Group to form skill sharing network.
Big tech collaborates on platform for the built environment.
Letter signed by 21 organisations sent to MHCLG.
A look at the Government's strategic approach.
Steps to help reduce the spread of infection inside buildings.
This social media-centred hobby can be both dangerous and illegal.
Millwork wall treatment with a long and illustrious history.
HSE introduces cumulative exposure calculator.
The Edwardians and their houses.
Click the button to subscribe.