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BS 476-21:1987

Current

Current

The latest, up-to-date edition.

Fire tests on building materials and structures Methods for determination of the fire resistance of loadbearing elements of construction

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-04-2014

Committees responsible
Foreword
1 Scope
2 Definitions
3 Test conditions
4 Apparatus
5 Determination of the fire resistance of beams
6 Determination of the fire resistance of columns
7 Determination of the fire resistance of floors and
  flat roofs
8 Determination of the fire resistance of walls
Appendix A - Guidance information
Publications referred to

Detailed test requirements for beams, columns, floors and flat roofs, and walls.

This Part of BS476 describes procedures for determining the fire resistance of loadbearing elements of building construction when subjected to the heating and pressure conditions specified in BS476‑20. This Part provides 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.

The methods described are not applicable to suspended ceilings protecting steel beams which are described in BS476‑23 (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.

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).

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

Committee
FSH/22
DevelopmentNote
Together with BS 476-20(1987), BS 476-22(1987), BS 476-23(1987) and BS 476-24(1987), it supersedes BS 476-8(1972). Supersedes 84/38798 DC. (07/2005) Reviewed and confirmed by BSI, December 2011. (11/2011) To be read in conjunction with BS 476-20(1987). (05/2014)
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Current
Supersedes

BS 5588-11:1997 Fire precautions in the design, construction and use of buildings Code of practice for shops, offices, industrial, storage and other similar buildings
PD 6512-3:1987 Use of elements of structural fire protection with particular reference to the recommendations given in BS 5588 \'Fire precautions in the design and construction of buildings\' Guide to the fire performance of glass
BS 5588-1:1990 Fire precautions in the design, construction and use of buildings Code of practice for residential buildings
11/30218915 DC : DRAFT JAN 2011 BS 6164 - CODE OF PRACTICE FOR HEALTH AND SAFETY IN TUNNELING IN THE CONSTRUCTION INDUSTRY
BS 5268-4.2(1990) : 1990 STRUCTURAL USE OF TIMBER - FIRE RESISTANCE OF TIMBER STRUCTURES - RECOMMENDATION FOR CALCULATING FIRE RESISTANCE OF TIMBER STUD WALLS AND JOISTED FLOOR CONSTRUCTIONS
BS 5950-8:1990 Structural use of steelwork in building Code of practice for fire resistant design
BS 5588-10:1991 Fire precautions in the design, construction and use of buildings Code of practice for shopping complexes
02/714116 DC : DRAFT DEC 2002 BS 6230:1991 - INSTALLATION OF GAS-FIRED FORCED CONVECTION AIR CONVECTION AIR HEATERS FOR COMMERCIAL AND INDUSTRIAL SPACE HEATING (2ND AND 3RD FAMILY GASES)
BS 5410-1:2014 Code of practice for oil firing Installations up to 45 kW output capacity for space heating and hot water supply purposes
BS 6229:2003 Flat roofs with continuously supported coverings. Code of practice
BS 6164:2011 Code of practice for health and safety in tunnelling in the construction industry
BS 6203:2003 Guide to fire characteristics and fire performance of expanded polystyrene materials (EPS and XPS) used in building applications
BS 6203:1991 Guide to fire characteristics and fire performance of expanded polystyrene materials used in building applications
BS 8202-1:1995 Coatings for fire protection of building elements Code of practice for the selection and installation of sprayed mineral coatings
11/30189447 DC : 0 BS 6266 - FIRE PROTECTION FOR ELECTRONIC EQUIPMENT INSTALLATIONS - CODE OF PRACTICE
BS 5588-6:1991 Fire precautions in the design, construction and use of buildings Code of practice for places of assembly
BS 5502-23:1990 Buildings and structures for agriculture Code of practice for fire precautions
07/30147204 DC : 0 BS 476-10 - FIRE TESTS ON BUILDING MATERIALS AND STRUCTURES - PART 10: GUIDE TO THE PRINCIPLES, SELECTION, ROLE AND APPLICATION OF FIRE TESTING AND THEIR OUTPUTS
BS 8212:1988 Code of practice for dry lining and partitioning using gypsum plasterboard
BS 8290-1:1991 Suspended ceilings Code of practice for design
11/30244843 DC : 0 BS 5306-4:2001+A1 - FIRE EXTINGUISHING INSTALLATIONS AND EQUIPMENT ON PREMISES - PART 4: SPECIFICATION FOR CARBON DIOXIDE SYSTEMS
BS 5588-2:1985 Fire precautions in the design, construction and use of buildings Code of practice for shops
04/30050096 DC : DRAFT NOV 2004 BS 5906 - WASTE MANAGEMENT IN BUILDINGS - CODE OF PRACTICE
BS 5588-7:1997 Fire precautions in the design, construction and use of buildings Code of practice for the incorporation of atria in buildings
DD ENV 1993-1.2 : DRAFT 2001 REPRINT EUROCODE 3: DESIGN OF STEEL STRUCTURES - PART 1.2: GENERAL RULES - STRUCTURAL FIRE DESIGN
BS 5306-4(2001) : 2001 FIRE EXTINGUISHING INSTALLATIONS AND EQUIPMENT ON PREMISES - PART 4: SPECIFICATION FOR CARBON DIOXIDE SYSTEMS
BS 5628-3:2001 Code of practice for use of masonry Materials and components, design and workmanship
BS 5502-23:2004 Buildings and structures for agriculture Fire precautions. Code of practice
BS 6230:2005 Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases)
BS 5588-8:1999 Fire precautions in the design, construction and use of buildings Code of practice for means of escape for disabled people
BS 8212:1995 Code of practice for dry lining and partitioning using gypsum plasterboard
PD 7974-3:2011 Application of fire safety engineering principles to the design of buildings Structural response and fire spread beyond the enclosure of origin
BS 6266:2011 Fire protection for electronic equipment installations. Code of practice
BS 5588-5:1991 Fire precautions in the design, construction and use of buildings Code of practice for firefighting stairs and lifts
BS 5306-5.1:1992 Code of practice for fire extinguishing installations and equipment on premises. Halon systems Specification for halon 1301 total flooding systems
BS 6266:2002 Code of practice for fire protection for electronic equipment installations
BS 5588-9:1999 Fire precautions in the design, construction and use of buildings Code of practice for ventilation and air conditioning ductwork
BS 476-10:2009 Fire tests on building materials and structures Guide to the principles, selection, role and application of fire testing and their outputs
BS 5908:1990 Code of practice for fire precautions in the chemical and allied industries
BS 5427(2016) : 2016 CODE OF PRACTICE FOR THE USE OF PROFILED SHEET FOR ROOF AND WALL CLADDING ON BUILDINGS
BS 4434:1995 Specification for safety and environmental aspects in the design, construction and installation of refrigerating appliances and systems
BS 6230:2011 Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases)
BS 6230:1991 Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd family gases)
BS 5306-4:2001+A1:2012 Fire extinguishing installations and equipment on premises Specification for carbon dioxide systems
BS 5906:2005 Waste management in buildings. Code of practice
PD 6686:2006 Guidance on directives, regulations and standards related to prevention of fire and explosion in the process industries
BS 476-10:1983 Fire tests on building materials and structures Guide to the principles and application of fire testing
BS 476-20:1987 Fire tests on building materials and structures Method for determination of the fire resistance of elements of construction (general principles)
PD 7974-3:2003 Application of fire safety engineering principles to the design of buildings Structural response and fire spread beyond the enclosure of origin (Sub-system 3)
BS 8202-1:1987 Coatings for fire protection of building elements Code of practice for the selection and installation of sprayed mineral coatings
12/30170835 DC : 0 BS 5410-2 - CODE OF PRACTICE FOR OIL FIRING - PART 2: SPACE HEATING, HOT WATER AND STEAM SUPPLY SERVICES FOR COMMERCIAL AND INDUSTRIAL PREMISES
11/30229803 DC : 0 BS 6230 - SPECIFICATION FOR INSTALLATION OF GAS-FIRED FORCED CONVECTION AIR HEATERS FOR COMMERCIAL AND INDUSTRIAL SPACE HEATING (2ND AND 3RD FAMILY GASES)
05/30131954 DC : DRAFT APR 2005 BS 5628-3 - CODE OF PRACTICE FOR THE USE OF MASONRY - PART 3: MATERIALS AND COMPONENTS, DESIGN AND WORKMANSHIP
BS 5588-9:1989 Fire precautions in the design, construction and use of buildings Code of practice for ventilation and air conditioning ductwork
DD ENV 1996-1.2 : DRAFT NOV 1997 EUROCODE 6 - DESIGN OF MASONRY STRUCTURES - GENERAL RULES - STRUCTURAL FIRE DESIGN (TOGETHER WITH UNITED KINGDOM NATIONAL APPLICATION DOCUMENT)
15/30095322 DC : 0 BS 5427 - CODE OF PRACTICE FOR THE USE OF PROFILED SHEET FOR ROOF AND WALL CLADDING ON BUILDINGS
BS 5588-8:1988 Fire precautions in the design, construction and use of buildings Code of practice for means of escape for disabled people
BS 5502-25:1991 Buildings and structures for agriculture Code of practice for design and installation of services and facilities
BS 1892-4:2003 Gymnasium equipment Sports mats. Specification for combat mats
BS 5427-1:1996 Code of practice for the use of profiled sheet for roof and wall cladding on buildings Design
BS 8214:1990 Code of practice for fire door assemblies with non-metallic leaves
PD 6520:1988 Guide to fire test methods for building materials and elements of construction
BS 5306-7:1988 Fire extinguishing installations and equipment on premises Specification for powder systems
BS 1892-2.10:1990 Gymnasium equipment. Particular requirements Specification for safety requirements for mats, mattresses and landing areas
BS 476-23:1987 Fire tests on building materials and structures Methods for determination of the contribution of components to the fire resistance of a structure
I.S. 325-2:1995 CODE OF PRACTICE FOR USE OF MASONRY - PART 2: MASONRY CONSTRUCTION
BS 8202-2:1992 Coatings for fire protection of building elements Code of practice for the use of intumescent coating systems to metallic substrates for providing fire resistance
BS 5588-3:1983 Fire precautions in the design, construction and use of buildings Code of practice for office buildings
BS 1892-3:2003 Gymnasium equipment Sports mats. Specification for fire safety requirements for mats, mattresses and landing areas
PD 7974-1:2003 Application of fire safety engineering principles to the design of buildings Initiation and development of fire within the enclosure of origin (Sub-system 1)
BS 5950-4:1982 Structural use of steelwork in building Code of practice for design of floors with profiled steel sheeting
BS 476-22:1987 Fire tests on building materials and structures Method for determination of the fire resistance of non-loadbearing elements of construction
BS 5410-2:2013 Code of practice for oil firing Installations over 45 kW output capacity for space heating, hot water and steam supply services
BS 6164:2001 Code of practice for safety in tunnelling in the construction industry
BS 5950-4:1994 STRUCTURAL USE OF STEELWORK IN BUILDING - PART 4: CODE OF PRACTICE FOR DESIGN OF COMPOSITE SLABS WITH PROFILED STEEL SHEETING

BS 476-23:1987 Fire tests on building materials and structures Methods for determination of the contribution of components to the fire resistance of a structure
BS 476-20:1987 Fire tests on building materials and structures Method for determination of the fire resistance of elements of construction (general principles)
BS 4422:2005 Fire. Vocabulary
BS 476-22:1987 Fire tests on building materials and structures Method for determination of the fire resistance of non-loadbearing elements of construction

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