Fire collar
A fire collar is a type of fire resistant fitting that maintains the integrity and fire insulating rating of a building element which has been penetrated by building services. This might be required, for example, when walls or floors are penetrated by cables, ducts, pipework, and so on. In this situation, the fire rating of the wall or floor can be reduced as the penetration can provide a path that allows fire to spread beyond the compartmentation intended to contain it.
Typically, fire collars comprise a retaining ring which contains an intumescent material that expands when heated rapidly. The strong compressive force exerted by the expanded material forms a fire-resistant seal, closing off the service component, and creating an insulating barrier.
There are different types of fire collar for different applications (for plastic pipes, copper pipes, general building services, electrical cables, and so on), and they can be cast-in-place or attached to the wall or floor. Other considerations include the fire collar size, ease of installation, aesthetics and so on.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Report examines lack of detail in the Government's vision.
Our director Gregor Harvie hosts 4 webinars at the IHBC marketplace on Friday.
Look up construction terms on any website direct from your browser.
The revival of the public sphere in Toronto.
The story behind the copycat architecture craze.
Construction product availability
Insight into construction materials supply and demand issues.
IHBC has announced winners of the 2020 honours.
Cement and concrete industry introduces measures to go beyond net zero.
UKGBC has introduced a resource to help with sustainability challenges.
Is it time to embrace EVs at last?
Plaster, glue and dye produce a highly decorative effect.
BSRIA predicts winners and losers for 2021 and beyond.
Net zero promises by September 2021
Firms must commit to net zero to secure major public work.
The resurgence of the British country house. Book review.