1、INTERNATIONAL STANDARD ISO 13784-2 First edition 2002-12-01 Reference number ISO 13784-2:2002(E) ISO 2002 Reaction-to-fire tests for sandwich panel building systems Part 2: Test method for large rooms Essais de raction au feu des systmes de fabrication de panneaux de type sandwich Partie 2: Mthode d
2、essai pour des chambres de grande tailleISO 13784-2:2002(E) ii ISO 2002 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are
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6、ut permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in SwitzerlandISO 13784-2:2002(E) ISO 2
7、002 All rights reserved iii Contents Page 1 Scope . 1 2 Normative references . 1 3 Terms and definitions 2 4 Principle 2 5 Types of structure . 3 6 Test specimen . 3 7 Test room design and construction . 3 8 Ignition source 7 9 Apparatus . 9 10 Procedure . 11 11 Precision . 13 12 Test report 13 Bibl
8、iography. 14ISO 13784-2:2002(E) iv ISO 2002 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical co
9、mmittees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with th
10、e International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the memb
11、er bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 13784 may be the subject of patent rights. ISO shall not be held responsible for
12、identifying any or all such patent rights. International Standard ISO 13784-2 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 1, Fire initiation and growth. ISO 13784 consists of the following parts, under the general title Reaction-to-fire tests for sandwich panel buildi
13、ng systems: Part 1: Test method for small rooms Part 2: Test method for large roomsISO 13784-2:2002(E) ISO 2002 All rights reserved v Introduction Fire is a complex phenomenon, its behaviour and effects dependent upon a number of interrelated factors. The behaviour of materials and products depends
14、upon the characteristics of the fire, the method of use of the materials and the environment in which they are exposed (for the philosophy of reaction-to-fire tests, see ISO/TR 3814). The need for improved insulation of buildings has led to the increased use of insulating sandwich panel systems in d
15、ifferent parts of the building industry. Sandwich panel systems are applied as external cladding on factory buildings, in internal envelopes with controlled atmospheres and in cold stores varying from small rooms to large, cool houses. Other applications are in modular building rooms and, sometimes,
16、 retail premises. These systems can also be used for roof applications in traditional constructions. Multi-layered panels with other facings (e.g. plasterboard) or sandwich panel systems can also be applied to walls as internal linings or insulation; however, this is not within the scope of ISO 1378
17、4. There exist three primary fire-related threats to the walls and ceilings or roofs of a building insulated with freestanding or frame-supported types of sandwich panel systems: a) an interior compartment fire impinging directly onto the joints of the wall, typical ignition sources being welding to
18、rches, burning items near the wall and fire in an adjacent room; b) an external fire or combustibles (rubbish, vegetation, vehicles, etc.) accumulated near the wall; c) fire spread to outside spaces. Moreover, such a fire can spread in several ways: over a combustible exterior surface; by travelling
19、 vertically and horizontally through the combustible cores of cavities within the external wall or ceiling/roof; through combustible gases which have developed due to the pyrolysis of the combustible components and which will ignite on the surface; as burning debris or flaming droplets. This part of
20、 ISO 13784 deals with a simple representation of a fire scenario involving a sandwich panel system such as that typified by a local fire impinging directly on the internal face of a sandwich panel building construction. The test method specified can be used to provide a large-room scale, end-use eva
21、luation of all aspects of sandwich panel systems, including constructional techniques (supporting frameworks, jointing detail, etc.) The test method is intended for evaluating products which, by their nature, are not normally used as internal linings and are unsuitable for assessment using ISO9705 1
22、 , which evaluates fire growth from a surface product. Nevertheless, this part of ISO 13784 provides a means by which a freestanding or frame-supported sandwich panel building construction can be built and evaluated. Testing of this type can be used for comparative purposes or to ensure the existenc
23、e of a certain quality of performance considered to have a bearing on fire performance generally; it does not rely on the use of asbestos- based materials.INTERNATIONAL STANDARD ISO 13784-2:2002(E) ISO 2002 All rights reserved 1 Reaction-to-fire tests for sandwich panel building systems Part 2: Test
24、 method for large rooms SAFETY PRECAUTIONS In order that suitable precautions can be taken to safeguard health, the attention of all concerned in fire tests is drawn to the possibility that toxic or harmful gases can be evolved during combustion of test specimens. The test procedures concerned invol
25、ve high temperatures and combustion processes from ignition to a fully developed room fire. Therefore, hazards can exist for burns, ignition of extraneous objects or clothing. Operators should use protective clothing, helmet, face-shield and equipment for avoiding exposure to toxic gases. Laboratory
26、 safety procedures shall be set up which ensure the safe termination of tests on sandwich panel products. Specimens with combustible content burning inside metallic facings can be difficult to extinguish with standard laboratory fire fighting equipment. Adequate means of extinguishing such a fire sh
27、all be provided. When tests are conducted using the freestanding or frame-supported constructions, specimens could emit combustion products from their external faces, especially if joints open up. Specimen collapse can also occur. Laboratory safety procedures shall be set up to ensure the safety of
28、personnel with due consideration to such situations. For construction of the test enclosure using a freestanding structure without structural framework, because of the size and weight of the individual panels it is strongly recommended that construction be accomplished within an additional external
29、support framework (e.g. scaffolding). If the test enclosure is erected in an outside environment, it is further recommended that the external framework remain in place during the test. The task of this framework is only to avoid collapse of the test room caused by wind action. This additional framew
30、ork shall not be used to fix and support the sandwich panels. 1 Scope This part of ISO 13784 specifies a test method for evaluating the reaction-to-fire performance of sandwich panel building systems for large rooms and the resulting flame spread on or within the sandwich panel building construction
31、 when it is exposed to heat from a simulated internal fire with flames impinging directly on its internal corner. The test method is not intended for evaluating a products fire resistance. This part of ISO 13784 is applicable to both freestanding and self-supporting, and frame-supported, sandwich pa
32、nel systems, but only to wall and ceiling or roof constructions. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 13784. For dated references, subsequent amendments to, or revisions of, any of
33、 these publications do not apply. However, parties to agreements based on this part of ISO 13784 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referre
34、d to applies. Members of ISO and IEC maintain registers of currently valid International Standards.ISO 13784-2:2002(E) 2 ISO 2002 All rights reserved ISO/TR 9705-2, Reaction-to-fire tests Full-scale room tests for surface products Part 2: Technical background and guidance ISO 13784-1, Reaction-to-fi
35、re tests for sandwich panel building systems Part 1: Test method for small rooms ISO 13943, Fire safety Vocabulary IEC 60584-2, Thermocouples Part 2: Tolerances 3 Terms and definitions For the purposes of this part of ISO 13784, the terms and definitions given in ISO 13943 and the following apply. 3
36、.1 composite combination of materials generally recognized in building construction as discrete entities EXAMPLE Coated or laminated materials. 3.2 exposed surface surface of the product subjected to the heating conditions of the test 3.3 product material, composite or assembly 3.4 constant mass sta
37、te of a test specimen when two successive weighing apparatus operations carried out at an interval of do not differ by more than of the mass of the specimen or by , whichever is greater 3.5 surface product any part of a building constituting an exposed surface on the walls or ceiling/roof, or on bot
38、h EXAMPLE Panel or board. 3.6 insulating sandwich panel multi-layered product consisting of three or more layers bonded together NOTE One layer is an insulating material, such as mineral or glass wool, cellular plastics or a natural material (e.g. corkboard), protected by facings on both sides. Faci
39、ngs can be selected from a variety of materials and can be either flat or profiled. The most widely used facing is coated steel. The composite can vary from a simple construction to a complex composite system with specific fixing joints and supports, depending on the application and on the performan
40、ce requirements. 3.7 specimen assembly representing the end-use construction 4P r i n c i p l e The reaction to fire performance of a sandwich panel assembly is assessed when it is exposed to flames impinging directly on the internal corner of a sandwich panel assembly. The different kinds of flame
41、spread that can occur are flame spread within the internal core, on the surface or through joints, by ignited combustible gases and by falling 24 h 0,1 % 0,1 gISO 13784-2:2002(E) ISO 2002 All rights reserved 3 debris or melting droplets of the sandwich panel assembly. The assessment allows determina
42、tion of the following possible fire hazards: the contribution of the system to fire development up to flashover; the potential for transmitting an interior fire to outside spaces or other compartments or adjacent buildings; the possibility of the structures collapse; the development of smoke and fir
43、e gases inside the test room. 5 Types of structure The test method is applicable to the following two types of structure, representative of those used in practice both in respect of construction and materials. a) Frame-supported structures Sandwich panel systems are mechanically fixed to the outside
44、 or the inside of a structural framework normally steel through the thickness of the panel. The ceiling/roof can be built traditionally or using sandwich panel systems. A widespread example is the external cladding of industrial buildings. In most cases, this kind of sandwich panel system is used on
45、 a buildings exterior wall, roof or both. Deformation of the frame can influence the fire behaviour of the sandwich panels. Where the frame is protected in practice because of fire resistance requirements, this should also be the case for the frame under test. Protection can be obtained by means of
46、insulating boards or coatings. b) Freestanding structures Sandwich panel systems are assembled together to provide a room or enclosure that does not depend for its stability on any other structural framework (e.g. cold stores, food or clean rooms, generally constructed within a weatherproof shell).
47、Normally situated inside a building, the ceilings of these constructions may be supported from above. 6 Test specimen The test specimen shall consist of the requisite number of panels required for the test to be performed. In all cases, the test specimen shall be representative of that used in pract
48、ice, both in construction and materials. All constructional details of joints, fixings, etc., shall be reproduced and positioned in the test specimen as in practice. If the type of sandwich panel under test is used in practice with an inside or outside structural framework, this shall be included in
49、 the test. The test specimen should be built by those suitably qualified in the construction of this type of structure. If, in practice, ceiling panels are different from wall panels, a test may be performed with the correct combination of wall and ceiling panels. If the sandwich panel building system is intended for use with decorative paint or film facings, these shall be present on the test specimen. 7 Test room design and construction 7.1 The test method consists of a procedure by which sandwich
