Wira house fire west park ring road technology england. Part 24 1987 method for determination of the fire resistance of ventilation ducts. Home publication index british standards institution bs 476 8. However, the latter will still be made available on request since it is referred to in building regulations and other legislative documents. Introduction first revision of bs 476 part 1 published in 1947 as bs 476 part 8.
Sarnafil limited robberds way bowthorpe norwich nr5 9fj 31st january 2011 test report number 267747 0578. Methods for determination of the fire resistance of nonloadbearing elements of construction. The specimen should be tested at full thickness provided that it can be fitted into the specimen holder, if not, the unexposed face should be cut away to reduce the thickness to a minimum of 50 mm. Method for determination of the fire resistance of elements of construction general principles standard. This report in issued in accordance with our terms and conditions, a copy of which is available on request. The test was performed in accordance with the procedure specified in bs 476. Product standards flameshield fireduct is fully compliant with bs 476 part 24 flameshield products have been fully tested in accordance with bs 476 part 24. We manufacture flameshield fireduct from the highest quality, galvanised sheet steel and is produced on specialist manufacturing systems. Bs 476 4, fire tests on building materials and structures part 4. Flameshield fireduct fire rated ductwork bs 476 part 24. A new assessing strategy on flame spread over construction and lining materials is recommended to be developed.
Fire resistance durations are established from the guidance to standards 2. This version of the report has been produced from a. This document was uploaded by user and they confirmed that they. This part of bs 476 3 has been prepared by subcommittee fsh22 8. Fire test center will provide british standard bs 476 7 surface flammability test to.
Bs 47620 fire resistance of load bearing elementsbritish standardstandard. Flameshield fireduct bs was the first noncoated ductwork system to achieve full compliance to all parts of the bs 476 part 24. It provides data suitable for comparing the performances of. Bs 4766 fire test to building material standard brief this part of bs 476 specifies a method of test, the result being expressed as a fire propagation index, that provides a comparative measure of the contribution to the growth. The following is reproduced from clause 4 of bs 476. Part 7 for evaluating flame spread over materials used in hong kong is regarded as inadequate. Form in which the specimens were tested the specimens were tested in the form of a composite. Reference throughout this document to a short, medium or long fire resistance duration, will be satisfied by following the guidance in the table to this annex titled fire resistance duration for common building elements or components. Prior to the tests, all of the specimens were conditioned to constant mass at a temperature of 23 2c and a relative humidity of 50 5%. Fire tests on building materials and structures part 7.
A british standard does not purport to include all the necessary provisions of a contract. This part, together with bs 47620, 21, 23 and 24, supersedes bs 4768. This report should be read in conjunction with the above mentioned documents. Bs 476 fire tests on building materials and structures. Fire classification of construction products and building elements part1. The bs 47620 thermocouple is a copper disc and its insulating pad is thin as described in figure 3. A revision was published in three parts as follows. Bs 4764 fire tests on building materials and structures part 4. The dfr2 joint products are ul listed file no r26111, for use in joint system nos.
Only the active door leaf of an access panel service. Because the conditions of furnace temperature which are achieved during the test in accordance to bs en 3818. Fire resistance tests for elements of building construction. Classification and method of test for external fire exposure to roofs.
Bs 476 22 has been prepared under the direction of the fire standards committee, and describes the procedures for determining the fire resistance of nonloadbearing elements of building construction. Conclusion the tested specimen has been subjected to a fire resistance test in accordance with bs 476 20 and bs 476 22, the fire resistance performance of the specimen was judged against the criteria for insulation and integrity. For bench tests, the variations in the burning rate of products are. Some additional guidelines were adopted from the european document referenced bs en 664, relating to the testing of these types of sealing systems. Bs 47620 fire tests on building materials and structures. Fire tests on building materials and structures method of test for fire propagation for products 2. Bs 476 20 fire resistance of load bearing elementsbritish standard preface the objective of determining fire resistance, as described in the part and the associated parts of bs 476, is to assess the behaviour of a specimen of an element of building construction when subjected to defined heating and pressure conditions.
Fire tests on building materials and structures part 4. Preparation of electronic manuscripts for publication iafss. The pdf copy supplied is the sole authentic version of this document. This part should be read in conjunction with bs 476 20 which describes the general principles for. Specific requirements for nonloadbearing vertical separating elements. Bs 476 was first published as a single volume in 1932. British standard fire tests on building materials and structures part 3. The need for a glossary covering terms used in bs 476 has been established and this will be published separately as a british standard glossary of terms and definitions associated with fire. Fire extinguishing installations and equipment on premises. Determines heating conditions, methods of test and fire resistance of products used for walls, partitions, flat roofs, columns, beams, suspended ceilings, doors, shutters, glazing and ceiling membranes. Fire tests on building materials and structures bs 476 3. To achieve class 0 a product must achieve class 1 in the part 7 test and also pass the part 6 test. The test produces a fire rating of class 1, 2, 3 or 4 depending upon how far a flame travels over a coated surface.
Flat plate section aa clamping frame in closed position with specimen in situ. Flat plate section aa clamping frame in closed position with specimen in. When designing a building a very important consideration is how it will behave in fire and ensure the elements of structure will not collapse but remain standing or hold back the fire for a prescribed time. Any ducts sized in excess of either 1250mm x mm or mm diameter must be tested in accordance with the en 66 part exap extended field of application bs en 158821. Roof systems shall be designated by the letters ext. Iso 6944 1985 fire resistance tests ventilation ducts. Classification and method of test for external fire exposure to roofs bs 476 4. Test methods and criteria for the fire resistance of elements of building construction amd 1873 amd 3816 amd 4822 no longer current but cited in building regulations guidance. All bsi british standards available online in electronic and print formats. Exova uk ltd, lochend industrial estate, newbridge, midlothian eh28 8pl united kingdom. A thermocouple is inserted into the centre of the specimen and connected to the logging equipment. Test methods and criteria for the fire resistance of elements of building construction amd 1873. Fire tests on building materials and structurespart 5. Classification using data from reaction to fire tests.
This part, together with bs 476 20, 21, 23 and 24, supersedes bs 476 8. This standard makes reference to the following british standard. British fireproof standard bs 476 part 22 the screen has passed the british fireproof standard bs476, part 22 specifications operation. Unexposed surface temperatures bs 47620 unexposed thermocouples, which are the same as those of iso 834, and astm e 119 use different thermocouples and pads to measure the unexposed surface temperatures of test specimens. According to bs, a fire door can be tested without having leaf of an active latch bolt but with only a selfclosing device. Fire tests on building materials and structures part 22. Main body of apparatus main body of apparatts clamping frame shwn in almst fully open position. Bs 476 part 7 specifies a method of test for measuring the lateral spread of flame along the surface of a specimen of a product orientated in the vertical position under opposed flow conditions, and a classification system based on the rate and extent of. It provides data suitable for comparing the performances of essentially flat materials, composites.
Ms5 page 1 of 5 schedule of accreditation issued by united kingdom accreditation service 2 pine trees, chertsey lane, stainesuponthames, tw18 3hr, uk. The commission is authorized to receive dead bodies pursuant to g. Flameshield fireduct we manufacture and supply flameshield fireduct bs flameshield fireduct bs was the first noncoated ductwork system to achieve full compliance to all parts of the bs 476 part 24. Bs 4765 is fire tests in building materials and structures. Msfdmfd shall be tested in accordance with the procedure specified in bs 476. S to indicate whether the test results apply to a flat horizontal or an inclined roof system, respectively. This part should be read in conjunction with bs 476 20 which describes the general principles for these methods. In order to read a secure pdf, you will need to install the fileopen plugin on your computer. Facade flame height zf against flame merging point distance zf,m normalized by the. For dated references, subsequent amendments to, or. Bs 4765 is fire tests in building materials and structures for method of test for ignitabilitybritish standard bs 4765 ignitability testbritish standard.
The method for rigid or semirigid materials or composites. The tests described in this part of bs 476 are designed to give information concerning the hazard that exists of fires spreading to the roof of a building from. Fire tests and certification tested in europe, certified for. The general changes made to the methods described in this part compared with bs476 8 are described in the foreword to bs47620. Flameshield fireduct, fire rated ductwork, bs 476 part 24. The fileopen plugin works with adobe reader and other viewers. Bs 476 4 fire tests on building materials and structures part 4.
Other tests being studied may result in the issue of further parts. Fire tests on building materials and structures part 5. Schedule of accreditation united kingdom accreditation service. The basic standard used to investigate these types of joint systems is.
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