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Last edited 08 Sep 2021
Fire resistance of buildings
Approved Document B Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), defines fire resistance as:
- Resistance to collapse (loadbearing capacity), which applies to loadbearing elements only, denoted R in the European classification of the resistance to fire performance.
- Resistance to fire penetration (integrity), denoted E in the European classification of the resistance to fire performance.
- Resistance to the transfer of excessive heat (insulation), denoted I in the European classification of the resistance to fire performance.
- Table B3 gives the specific requirements for each element of structure.
- Table B4 sets out the minimum periods of fire resistance for elements of structure.
- Table B5 sets out limitations on the use of uninsulated fire resisting glazed elements.
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