This part should be read in conjunction with bs 476 20 which describes the general principles for these methods. Method for determination of the fire resistance of elements of construction general principles standard by bsi group, 05291987. 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. Bs 476 22 fire tests on building materials and structures part 22. Schedule of accreditation united kingdom accreditation service. Methods for determination of the fire resistance of nonloadbearing elements of construction udc 614. Method for determination of the fire resistance of nonloadbearing elements of construction. 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. Bs 476 fire tests on building materials and structures. A representative sample of the elements is exposed to a vs regime of heating and the performance of the test sample is monitored on the basis of criteria described in the standard. This report should be read in conjunction with the above mentioned documents. Furnace the furnace was controlled so that its mean temperature complied with the requirements of bs 476. The specimens were adhered to a 12mm calcium silicate board using. Akin koksal, bechtel ltd, 28 february 2005, uncontrolled copy, c bsi udc 614.
Method for determination of the fire resistance of elements of construction general principles amd 6487. Akin koksal, bechtel ltd, 28 february 2005, uncontrolled copy, c bsi ics. All bsi british standards available online in electronic and print formats. Monitor the irradiance by means of the radiometer described in bs 476 20. Walls and partitions fire resistance bs 476 part 21.
Bs 476 21 has been prepared under the direction of the fire standards committee, and describes the procedures for determining the fire resistance of loadbearing elements of building construction. For bench tests, the variations in the burning rate of products are. Method for determination of the fire resistance of elements of construction general principles bs 47621. Fire resistance testing bs 476 the building test centre. Fire tests on building materials and structures part 15. Fire resistance test utilising the general principles of bs 476 bostik. Fire resistance test utilising the general principles of bs 476. The pressure at mid height of the wall slab was approximately 15 2 pa. Success secrets to thrive in your 20 s, 30 s, and beyond jason heinritz pdf. Method of measuring the rate of heat release of products bs 47620. This standard has been superseded by the current bs en 661, bs en 668 and bs en 669, but it has been retained based on a legitimate need for the standards within noneu markets. Flameshield fireduct achieves this without the requirement of any external or internal coatings. The product is suitable for sealing gaps around doors and window frames, using secondary fire.
Determination of the fire resistance of uninsulated doorsets and shutter assemblies. However, the regulations require that large cavity barriers should be tested to bs 476 as either vertical or horizontal separating elements, whichever is appropriate to their use. Method for determination of the fire resistance of elements of construction general principles the sample exposed to high temperature and pressure conditions, the test samples within the specified time bearing weight, integrity and insulation. Fire tests on building materials and structurespart 22. Method for measuring the rate of heat release of products. Therefore clauses 5 to 7 are self contained and cross refer to bs 476. 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. Section 5 fire test study group resolutions 47, 51 and 70 bs en 641. Part e fire properties of building elements and components this. The fileopen plugin works with adobe reader and other viewers.
Fire resistance test utilising the general principles of. Method for determination of the fire resistance of elements of construction general principles. Research has clearly shown that the different types of plastics behave in different ways under fire. The test produces a fire rating of class 1, 2, 3 or 4 depending upon how far a flame travels over a coated surface. The purpose of bs476 part 24 1987 and iso6944 1985 is to.
Method for determination of the fire resistance of elements of construction general. Secure pdf files include digital rights management drm software. Flameshield fireduct fire rated ductwork bs 476 part 24. However the british standard 476 dictates the appropriate fire tests for. This part should be read in conjunction with bs 47620 which describes the general principles for these methods. 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. Some additional guidelines were adopted from the european document referenced bs en 664, relating to the testing of these types of sealing systems. 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 purpose of bs 476 part 24 1987 and iso6944 1985 is to measure and ensure the ability of a ductwork system to resist the spread of fire whilst maintaining its stability and integrity as a ductwork system. Bs 476 part 20, 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 condi. Methods for determination of the fire resistance of loadbearing elements of construction licensed copy. In the standard fire tests, three criteria are to be examined, including loadbearing capacity, integrity and insulation. The test was carried out in accordance with bs 476. The passive fire protection handbook riba product selector. This part should be read in conjunction with bs 47620 which. Method for determination of the fire resistance of elements of construction general principles bs 476 21.
Methods for determination of the contribution of components to the fire resistance of a structure licensed copy. Flameshield fireduct, fire rated ductwork, bs 476 part 24. Using a single mineral insulated thermocouple, positioned at mid diameter of the inside of the ducts, at a position approximately 100 mm from the unexposed surface of the wall, coincident with the end of the steel tube. You may experience issues viewing this site in internet explorer 9, 10 or method of test for determination of the fire resistance of elements of construction general principles. The furnace atmospheric pressure 100 mm below the soffit of the floor slab was calculated to be 18 2 pa. Method for determination of the fire resistance of elements of construction general principles amd document status indicators the green document status indicator indicates that the document is. To facilitate the use of the new european fire test methods. A bs 476 20 fire resistance test to building material standard brief 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. Bs 47620 fire tests on building materials and structures.
This part, together with bs 476 20, 21, 23 and 24, supersedes bs 476 8. To achieve class 0 a product must achieve class 1 in the part 7 test and also pass the part 6 test. Classification and method of test for external fire exposure to roofs. Buildings used for high level storage and other high risk purposes risk group ws from 10042012 back nzs bs 476. British standard a single copy of this british standard is licensed to giorgio cavalieri on november 16, 2000 this is an uncontrolled copy. The doorsets were referenced doorset a and doorset b for the purpose of the test. Each doorset had overall nominal dimensions of height 2034 mm and width 850 mm and incorporated a leaf of. Bs 476 20 fire resistance of load bearing elements british 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 sample exposed to high temperature and pressure conditions, the test samples within the specified time bearing weight, integrity and. Fire resistance test to building material loadbearing.
The sample exposed to high temperature and pressure conditions, the test samples within the specified time bearing weight, integrity and insulation. Method of measuring the rate of heat release of products bs 476 20. A related british standard to iso 834 is bs 476 20. Method for determination of the fire resistance of elements of construction general principles standard by bsi group, 0529 1987. The sponsor sampled the material and the specimens were cut from the sample to the dimensions set out in the standard. In order to read a secure pdf, you will need to install the fileopen plugin on your computer. However, the latter will still be made available on request since it is referred to in building regulations and other legislative documents.
780 289 271 1261 1002 1489 168 1424 87 764 497 887 1380 893 416 283 1457 73 1364 1005 189 459 833 244 1237 160 628 35 144 1440 464 1348 551 348 1037 336 385 1077