What is BS 476-21 - Fire resistance of loadbearing elements of construction about?
BS 476-21 is the 21st part of the multiple series that describes procedures for determining the fire resistance of loadbearing elements of building construction when subjected to the heating and pressure conditions specified in BS 476-20.
Note 1: The methods described are not applicable to suspended ceilings protecting steel beams which are described in BS 476-23 (see A.1). Owing to limitations imposed by both the furnaces and their method of control, structures employing water cooling techniques are not capable of being evaluated realistically by these procedures.
Note2: The methods described are not applicable to assemblies of elements, e.g., wall/floor combinations, although some guidance is provided in Appendix A for tests of this type (see A.1).
Who is BS 476-21 - Fire resistance of loadbearing elements of construction for?
BS 476-21 on fire resistance of loadbearing elements of construction is useful for:
- Construction industries
- Civil engineers
- Contractors
- Builders
- Testing laboratories for fire resistance
Why should you use BS 476-21 - Fire resistance of loadbearing elements of construction?
The period for which a passive fire protection system can endure a conventional fire resistance test is known as a fire-resistance rating.
BS 476-21 specifies requirements for specimen selection and/or its design and construction, loading and restraint conditions, equipment, procedures, and criteria as they apply to loadbearing specimens. The methods are applicable to beams, columns, floors, flat roofs, and walls.
Overall, BS 476-21 will help you to determine the fire resistance of beams with or without an applied fire protection insulation material and unventilated cavities.