BS DD CEN TS 1187-2012 Test methods for external fire exposure to roofs《屋顶外部着火的试验方法》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationDD CEN/TS 1187:2012Test methods for external fireexposure to roofsDD CEN/TS 1187:2012 DRAFT FOR DEVELOPMENTNational forewordThis Draft for Development is the UK implementation of

2、 CEN/TS1187:2012. It supersedes DDENV1187:2002 which is withdrawn.This publication is not to be regarded as a British Standard.It is being issued in the Draft for Development series of publicationsand is of a provisional nature. It should be applied on thisprovisional basis, so that information and

3、experience of its practicalapplication can be obtained.Comments arising from the use of this Draft for Developmentare requested so that UK experience can be reported to theinternational organization responsible for its conversion toan international standard. A review of this publication willbe initi

4、ated not later than 3 years after its publication by theinternational organization so that a decision can be taken on itsstatus. Notification of the start of the review period will be made inan announcement in the appropriate issue of Update Standards.According to the replies received by the end of

5、the review period,the responsible BSI Committee will decide whether to support theconversion into an international Standard, to extend the life of theTechnical Specification or to withdraw it. Comments should be sentto the Secretary of the responsible BSI Technical Committee at BritishStandards Hous

6、e, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to TechnicalCommittee FSH/22/-/8, Fire resistance tests for external fire exposurefor roofs.A list of organizations represented on this committee can beobtained on request to its secretary.This publication

7、 does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 67070 1ICS 13.220.50; 91.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This Draft for

8、 Development was published under the authority ofthe Standards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedDD CEN/TS 1187:2012TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 1187 January 2012 ICS 13.220.50; 91.0

9、60.20 Supersedes ENV 1187:2002English Version Test methods for external fire exposure to roofs Mthodes dessai pour lexposition des toitures un feu extrieur Prfverfahren zur Beanspruchung von Bedachungen durch Feuer von auen This Technical Specification (CEN/TS) was approved by CEN on 23 August 2011

10、for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required t

11、o announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversio

12、n of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland

13、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form an

14、d by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 1187:2012: EDD CEN/TS 1187:2012CEN/TS 1187:2012 (E) 2 Contents Page Foreword 5g3Introduction .6g31 Scope 7g32 Normative references 7g33 Terms and definitions .7g34 Test 1: Method with burning brands . 10g34.1 Test equipment

15、. 10g34.2 Calibration . 10g34.3 Test conditions (roof pitch) . 11g34.4 Test specimen . 11g34.4.1 General . 11g34.4.2 Selection of standard supporting decks 11g34.4.3 Positioning of joints . 12g34.4.4 Edge detailing . 13g34.5 Conditioning 13g34.5.1 Wood wool . 13g34.5.2 Test specimen . 13g34.6 Test e

16、nvironment 13g34.7 Test procedure 13g34.7.1 Filling the basket. 13g34.7.2 Positioning of the brand 14g34.7.3 Start of the test 14g34.7.4 End of the test . 14g34.8 Observations and measurements . 15g34.8.1 General . 15g34.8.2 External fire spread 15g34.8.3 Fire penetration and openings 15g34.8.4 Dama

17、ge 15g34.9 Test report . 16g34.10 Direct field of application of test results 17g34.10.1 Roof pitch 17g34.10.2 Nature of the deck. 17g35 Test 2: Method with burning brands and wind 18g35.1 Test equipment . 18g35.2 Calibration . 19g35.2.1 Air velocity . 19g35.2.2 Propane supply . 21g35.2.3 Mechanical

18、 alignment 21g35.3 Test conditions . 21g35.4 Test specimen . 21g35.4.1 Sampling 21g35.4.2 Preparation of test specimens 22g35.5 Conditioning 22g35.5.1 Crib . 22g35.5.2 Test specimen . 22g35.6 Test environment 22g35.7 Test procedure 23g35.8 Observations and measurements . 24g35.9 Test report . 24g3DD

19、 CEN/TS 1187:2012CEN/TS 1187:2012 (E) 3 5.10 Direct field of application of test results . 25g36 Test 3: Method with burning brands, wind and supplementary radiant heat . 25g36.1 Test equipment 25g36.1.1 Brands 25g36.1.2 Wind 25g36.1.3 Radiant panel . 26g36.1.4 Timing device . 26g36.1.5 Calibration

20、element . 27g36.1.6 Specimen holder 27g36.2 Calibration 27g36.2.1 General . 27g36.2.2 Specimen holder 27g36.2.3 Wind 27g36.2.4 Radiant level 27g36.3 Test conditions 27g36.4 Test specimen 27g36.4.1 General . 27g36.4.2 Selection of standard supporting decks . 28g36.4.3 Positioning of joints 28g36.4.4

21、Edge detailing 29g36.4.5 Protection of the edges. 29g36.5 Conditioning 29g36.6 Test environment . 29g36.7 Test procedure . 29g36.7.1 Preparation of brands . 29g36.7.2 Start of the test 30g36.7.3 Positioning of the brands . 30g36.7.4 End of the test 30g36.7.5 Post test examination . 30g36.8 Observati

22、ons and measurements 30g36.8.1 General . 30g36.8.2 External fire spread . 30g36.8.3 Fire penetration and openings . 31g36.8.4 Damage . 31g36.9 Test report 31g36.10 Direct field of application of test results . 32g36.10.1 Roof pitch . 32g36.10.2 Nature of the deck . 32g37 Test 4 Method with two stage

23、s incorporating burning brands, wind and supplementary radiant heat 33g37.1 Test equipment 33g37.1.1 Brands 33g37.1.2 Wind 33g37.1.3 Radiant panel . 33g37.1.4 Calibration element . 34g37.1.5 Timing device . 34g37.1.6 Specimen holder 34g37.2 Calibration 34g37.3 Test conditions 34g37.4 Test specimen 3

24、4g37.4.1 Number of test specimens . 34g37.4.2 Construction of specimens 35g37.5 Conditioning 36g37.6 Test environment . 36g37.7 Test procedure . 36g37.7.1 Preliminary ignition test with burning brands (stage 1) 36g37.7.2 Penetration test with burning brands, wind and supplementary radiant heat (stag

25、e 2) 37g37.7.3 End of test 37g3DD CEN/TS 1187:2012CEN/TS 1187:2012 (E) 4 7.8 Observations and measurements . 37g37.8.1 General . 37g37.8.2 Preliminary ignition test with burning brands (stage 1) . 37g37.8.3 Penetration test with burning brands, wind and supplementary radiant heat (stage 2) . 37g37.9

26、 Test report . 38g37.10 Direct field of application of test results Roof pitch 38g38 Figures . 39g38.1 Test 1 39g38.2 Test 2 44g38.3 Test 3 51g38.4 Test 4 57g3Bibliography . 60g3DD CEN/TS 1187:2012CEN/TS 1187:2012 (E) 5 Foreword This document (CEN/TS 1187:2012) has been prepared by Technical Committ

27、ee CEN/TC 127 “Fire safety in buildings”, the secretariat of which is held by BSI. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Thi

28、s document supersedes ENV 1187:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announ

29、ce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,

30、 Switzerland, Turkey and the United Kingdom. DD CEN/TS 1187:2012CEN/TS 1187:2012 (E) 6 Introduction The first mandate given to CEN/TC 127 on fire resistance testing (Mandate No. 117) in support of the Construction Products Directive required two test methods for external fire exposure to roofs. One

31、test method was to include the effect of a burning brand, the other was to include the effect of a burning brand together with wind and supplementary radiant heat. These two draft methods were circulated for the CEN 6-month enquiry, but many countries did not support the two and several countries re

32、quested that only one method should be prepared by CEN. The topic was referred to the EC Fire Regulators Group. Discussions took place in both the Fire Regulators Group and the Standing Committee on Construction, and in April 1997 CEN/TC 127 was requested to produce a standard incorporating the two

33、existing draft methods and the Nordtest method. The Standing Committee accepted this as a short-term solution and strongly expressed the view that a truly harmonised test procedure should be developed in the long term, i.e. a single test procedure for this characteristic. Realizing that the three te

34、st method document (ENV 1187:2002 dated May 2002) and the Amendment A1 (ENV 1187:2002/A1 dated August 2005) did not have the same time scale, it was decided to consider all four methods under the same procedure. This Technical Specification will be followed by a single test procedure required by the

35、 European Commission. CAUTION The attention of all persons concerned with managing and carrying out these tests is drawn to the fact that fire testing can be hazardous and that there is a possibility that toxic and/or harmful smoke and gases can be evolved during the test. An assessment of all poten

36、tial hazards and risks to health should be made and safety precautions should be identified and provided. Written safety instructions should be issued. Appropriate training should be given to all relevant personnel. Laboratory personnel should ensure that they follow written safety instructions at a

37、ll times. DD CEN/TS 1187:2012CEN/TS 1187:2012 (E) 7 1 Scope This Technical Specification specifies four methods for determining the performance of roofs to external fire exposure. The four methods assess the performance of roofs under the following conditions: a) test 1 with burning brands; b) test

38、2 with burning brands and wind; c) test 3 with burning brands, wind and supplementary radiant heat; d) test 4 with two stages incorporating burning brands, wind and supplementary radiant heat. The tests assess the fire spread across the external surface of the roof, the fire spread within the roof (

39、tests 1, 2 and 3), the fire penetration (tests 1, 3 and 4) and the production of flaming droplets or debris falling from the underside of the roof or from the exposed surface (tests 1, 3 and 4). Tests 2 and 3 are not applicable to geometrically irregular roofs or roof mounted appliances, e.g. ventil

40、ators and roof lights. NOTE The four tests listed above do not imply any ranking order. Each test stands on its own without the possibility to substitute or exchange one for another. 2 Normative references The following referenced documents are indispensable for the application of this document. For

41、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13238:2010, Reaction to fire tests for building products g650 Conditioning procedures and general rules for selection of substrates EN 13501

42、-1:2007+A1:2009, Fire classification of construction products and building elements g650 Part g20: Classification using data from reaction to fire tests EN 13501-5:2005+A1:2009, Fire classification of construction products and building elements g650 Part 5: Classification using data from external fi

43、re exposure to roofs tests EN ISO 13943:2010, Fire safety Vocabulary (ISO g203943:2008) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 13943:2000 and the following apply. 3.1 roof covering and sealing system including any insulating layers or vap

44、our barriers normally provided together with their supporting elements including attachment (glued, mechanically fastened, etc.), and roof lights or other closures for roof apertures that are intended to provide a weatherproof surface 3.2 material basic single substance or uniformly dispersed mixtur

45、e of substances (e.g. metal, stone, wood, bitumen, concrete, mineral wool) DD CEN/TS 1187:2012CEN/TS 1187:2012 (E) 8 3.3 damaged material 3.3.1 damaged material including melting material that has been burnt, charred, melted or otherwise visually changed by heat NOTE Discolouration and soot deposits

46、 should not be regarded as damage. Areas of the roof covering surface in which combustion has not occurred should not be regarded as damaged (e.g. areas which have only become shiny or only have tiny occasional holes or bubbles). 3.3.2 damaged material not including melting material that has been bu

47、rnt or otherwise visually changed by heat, excluding melting NOTE Discolouration and soot deposits should not be regarded as damage. Areas of the roof covering which have only become shiny or only have tiny occasional holes or bubbles should not be regarded as damaged. 3.4 burnt material material th

48、at has been destroyed by combustion or pyrolysis 3.5 composite combination of materials which is generally recognized in building construction as a discrete entity EXAMPLE Coated or laminated products such as roofing felts. 3.6 assembly fabrication of materials and/or composites EXAMPLE Sandwich pan

49、els. 3.7 product material, composite or assembly about which information is required 3.8 specimen representative section of the roof/roof covering prepared for the purpose of the test 3.9 continuous deck element with a continuous supporting function in which the gap between adjacent elements is not greater than 0,5 mm (5,0 0,5) mm in the case of wooden planks with plain edges) 3.10 exposed surface external surface of the specimen which is subject to the heating conditions of the test 3.11 measuring zone area of the specimen within which measurements are