Fire resistance tests for elements of building construction. S to indicate whether the test results apply to a flat horizontal or an inclined roof system, respectively. Part 2 ul 1479, can ulcs115, astm e814 bs 47620 firestopping and sealing systems linear joint and gap seals en 664 etag 026 part 3 ul 2079, can ulcs115, astm e1966 bs 47620 glass numerous types of glass en 16341 ul 9, canulcs106 bs 47622 curtain walling nonloadbearing elements, curtain walling, part configuration. Fire tests on building materials and structures part 6. The test was performed in accordance with the procedure specified in bs 476. Method of test for fire propagation for products bs 4767. Guide to the principles, selection, role and application of fire testing and their outputs.
The following is reproduced from clause 4 of bs 476. The performance criteria for failure were given as follows. Fire classification in accordance with british standards. All products achieving these standards are polyester powder coated to london underground engineering standard 201001002 for surface spread of flame. The specimens were tested stuck down on to 12mm calcium silicate board using pva adhesive. Method of test for fire propagation for products bs 476 6. Part 1, bs 5423, bs 5852, health and safety at work etc. To achieve class 1 bs 476 part 7 classification, the spread of flame must not be more than 165mm in 10 minutes. Part 6 fire propagation measures the heat release under fire conditions and part 7 spread of flame measures the ability to. Other tests being studied may result in the issue of further parts. This part should be read in conjunction with bs 47620 which describes the general principles for these methods. To achieve class 0 a product must achieve class 1 in the part 7 test and also pass the part 6 test.
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. The specimen is mounted in a watercooled holder and is exposed to a radiant panel over a ten minute test duration. This method of test, the result being expressed as a fire propagation index, provides a comparative measure of the contribution to the growth of fire made by an essentially flat material. Bs 47620 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. The need for a glossary covering terms used in bs 476 has been established and. Products classified as noncombustible under bs 476.
A thermocouple is inserted into the centre of the specimen and connected to the logging equipment. Superlon class o prevents flame spread and fire propagation and is tested under british standard bs 476 part 6 and part 7. The test was carried out in accordance with bs 476. The test produces a fire rating of class 1, 2, 3 or 4 depending upon how far a flame travels over a coated surface. It provides data suitable for comparing the performances of essentially flat materials, composites. Index of performance i not exceeding 12 and a subindex i1 not exceeding 6. Bs 47620 fire tests on building materials and structures. 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. The tests that are relevant to the solid surface industry are the bs476 part 6, and bs476 part 7. This revision of the standard involved a change in the material used to construct the combustion chamber.
The bs 476 part 5 is now obsolete and has been withdrawn although it is still quoted in bs 5422. All materials shall be tested in accordance with the relevant sections of bs 476. The manufacturer has made a declaration, which is held on file, that the product placed in the marketplace, named in section 2. Flameshield fireduct, fire rated ductwork, bs 476 part 24. Bs 4764 fire tests on building materials and structures part 4. All bsi british standards available online in electronic and print formats. Fire tests on building materials and structures part 7. Fire rated 1 mailbox two hour fire rated solutions. Flat plate over steel hollow section frame rectangular hdlow section 60x25x3. Any material of density 300kgm or more, which when tested to bs 476. Specimen pivot arm section bb clarrping frame drnost fully 9en positim. Part 7 the complete assembly of materials as installed shall achieve a class 1 spread of flame. Fire test center will provide british standard bs 4767 surface flammability test to.
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. Method of test for fire propagation for products bs 4766. The sponsor sampled the material and the specimens were cut from the sample to the dimensions set out in the standard. Method of test to determine the classification of the surface spread of flame of products. For bench tests, the variations in the burning rate of products are. Nepshaw lane south, morley, leeds, ls27 7jq materials. The british standard 476 bs476 dictates the appropriate fire tests for these elements of structurematerials and grades the level of fire resistance.
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