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] Find out more
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Inclusive cities and transport
ICE responds to a transport consultation advising the government to make decisions enabling more inclusive cities.
BRE and Loughborough University complete first phase refurbishment of demonstration home.
How the risk of collapse of fibrous plaster ceilings is being addressed in theatres.
We’re looking for a full-time Editor
If you’re a great writer and have practical experience of the construction industry, it could be you.
Frustrated by long documents or technical jargon? Put off by sign-up forms or costs? Take this 5 min survey to help improve construction knowledge.
These are attached to land that is the subject of a planning permission, and used to compensate for negative impacts.
State of the nation - Scotland
ICE Scotland launch its new report for a long-term, holistic approach to infrastructure planning and funding.
Building surveys provide a detailed evaluation of a property's condition and involve an extensive inspection.
Government announces additional £2m funding for councils to tackle rogue landlords.
Maintenance is the process of ensuring that buildings retain a good appearance and operate at optimum efficiency.
Andrew Wyllie CBE, the CEO of Costain, becomes the 154th ICE President.