EN 1365-2-2014 en Fire resistance tests for loadbearing elements - Part 2 Floors and roofs《承重构件的防火测试 第2部分 地面和屋顶》.pdf

1、BSI Standards PublicationBS EN 1365-2:2014Fire resistance tests forloadbearing elementsPart 2: Floors and roofsBS EN 1365-2:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1365-2:2014. Itsupersedes BS EN 1365-2:2000 which is withdrawn.The UK participation i

2、n its preparation was entrusted to TechnicalCommittee FSH/22/-/7, Non loadbearing separating elements.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are res

3、ponsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 80672 8ICS 13.220.50; 91.060.20; 91.060.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the au

4、thority of theStandards Policy and Strategy Committee on 30 November 2014.Amendments issued since publicationDate Text affectedBS EN 1365-2:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1365-2 November 2014 ICS 13.220.50; 91.060.20; 91.060.30 Supersedes EN 1365-2:1999English Version Fire

5、resistance tests for loadbearing elements - Part 2: Floors and roofs Essais de rsistance au feu des lments porteurs - Partie 2: Planchers et toitures Feuerwiderstandsprfungen fr tragende Bauteile - Teil 2: Decken und Dcher This European Standard was approved by CEN on 27 September 2014. CEN members

6、are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application t

7、o the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

8、Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith

9、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B

10、-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1365-2:2014 EBS EN 1365-2:2014EN 1365-2:2014 (E) 2 Contents Page Foreword 4 1 Scope 5 2 Normative references 5 3 Terms, definitions, symbols and designations 5 3.1

11、 Terms and definitions .5 3.2 Symbols and designations .6 4 Test equipment 7 5 Test conditions 7 5.1 Furnace .7 5.2 Loading conditions 7 6 Test specimen 7 6.1 General 7 6.2 Size 8 6.3 Number .8 6.3.1 General 8 6.3.2 Pitched roof constructions without glazing 8 6.4 Design .9 6.4.1 General 9 6.4.2 Flo

12、or or roof construction 9 6.4.3 Ceiling system 9 6.4.4 Pitched roof constructions 10 6.4.5 Floor and roof constructions incorporating glazing . 10 6.4.6 Support and restraint conditions 10 6.5 Construction 11 6.6 Verification 11 7 Installation of test specimen . 11 8 Conditioning 11 9 Application of

13、 instrumentation 11 9.1 Thermocouples . 11 9.1.1 Furnace thermocouples (plate thermometers) 11 9.1.2 Unexposed surface thermocouples for constructions without glazing 12 9.2 Pressure . 13 9.3 Deflection . 13 9.4 Radiation 13 10 Test procedure 13 10.1 General . 13 10.2 Application and control of load

14、 . 13 10.3 Furnace control . 13 10.4 Observations during the test . 13 10.5 Termination of the test . 13 11 Performance criteria . 13 12 Test report . 13 13 Field of direct application of test results for constructions without glazing . 14 BS EN 1365-2:2014EN 1365-2:2014 (E) 3 Annex A (normative) Sp

15、ecific requirements for testing floor and roof constructions incorporating glazing 20 A.1 General . 20 A.2 Test specimen design . 20 A.3 Test specimen instrumentation . 21 A.3.1 General . 21 A.3.2 Average temperature rise . 21 A.3.2.1 Uniform glazing . 21 A.3.2.2 Non-uniform glazing 21 A.3.3 Maximum

16、 temperature rise . 21 A.3.3.1 General . 21 A.3.3.2 Sloped constructions 21 A.3.3.3 Horizontal constructions 22 A.3.4 Deflection . 22 A.3.5 Radiation measurement 23 A.4 Performance criteria 23 A.5 Field of direct application of test results 23 A.5.1 General . 23 A.5.2 Shapes of flat glass panes . 23

17、 A.5.3 Span length 23 A.5.4 Extension of width in direction perpendicular to the span . 23 A.5.5 Inclination angle 24 A.5.6 Supporting constructions. 24 A.5.6.1 General . 24 A.5.6.2 Standard supporting constructions 24 A.5.6.3 Non-standard supporting construction 24 BS EN 1365-2:2014EN 1365-2:2014 (

18、E) 4 Foreword This document (EN 1365-2:2014) has been prepared by Technical Committee CEN/TC 127 “Fire safety in buildings”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,

19、 at the latest by May 2015, and conflicting national standards shall be withdrawn at the latest by May 2015. 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 a

20、ll such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This document supersedes EN 1365-2:1999. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following co

21、untries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

22、Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1365-2:2014EN 1365-2:2014 (E) 5 1 Scope This European Standard specifies a method for determining the fire resistance of: - floor constructions, without cavities or with unventilated cavit

23、ies; - roof constructions, with or without cavities (ventilated or unventilated); - floor and roof constructions incorporating glazing; with fire exposure from the underside. This European Standard is used in conjunction with EN 1363-1. 2 Normative references The following documents, in whole or in

24、part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1363-1:2012, Fire resistance tests - Part 1:

25、 General Requirements EN 1363-2, Fire resistance tests - Part 2: Alternative and additional procedures EN ISO 13943, Fire safety - Vocabulary (ISO 13943) 3 Terms, definitions, symbols and designations For the purposes of this document, the terms and definitions given in EN 1363-1 and EN ISO 13943 an

26、d the following apply. 3.1 Terms and definitions 3.1.1 floor construction a horizontal separating element of building construction which is loadbearing 3.1.2 roof construction a horizontal or sloped separating element of building construction which is loadbearing and includes the roof covering 3.1.3

27、 ceiling a lining plus any supporting framework, including hangers, fixings and any insulation material. The ceiling may be attached directly to the structural building member or be suspended from it or be self supporting (see Figure 1) 3.1.4 ceiling system the full ceiling assembly submitted for te

28、st, including hangers and fixings, e.g. lighting and ventilation ductings and access points BS EN 1365-2:2014EN 1365-2:2014 (E) 6 3.1.5 cavity the space between the upper surface of the ceiling and the underside of any floor, roof or its supporting construction 3.1.6 roof construction incorporating

29、glazing a roof construction as defined in 3.1.2 with one opening in which a glazed element is built in, with or without shared transoms or mullions 3.1.7 fire resistant glazing a glazing system consisting of one or more transparent or translucent panes with a suitable method of mounting, with e.g. f

30、rames, seals, fixing materials, et, capable of satisfying the appropriate fire resistance criteria 3.1.8 insulated glazing fire resistant glazing which satisfies both the integrity and insulation criteria for the anticipated fire resistance period 3.1.9 uninsulated glazing fire resistant glazing whi

31、ch satisfies the integrity and, where required, the radiation criteria for the anticipated fire resistance period but which is not intended to provide insulation 3.1.10 glazed elements building elements with one or more (light transmissive) panes, that are built in a frame with fixings and seals 3.1

32、.11 pane a single piece of monolithic or laminated glass, or an insulated glass unit (IGU) 3.1.12 aspect ratio the ratio of the height of a pane to its width 3.1.13 mullion a vertical framing member of a sloped construction, separating and supporting two adjacent panes of glass or panels 3.1.14 tran

33、som a horizontal framing member of a sloped construction, separating and supporting two adjacent panes of glass or panels 3.2 Symbols and designations Symbol Unit Description Lexpmm Length of the test specimen exposed to heating. Lsupmm Length of test specimen between centers of supports (this is eq

34、uivalent to L in EN 1363-1). Lspecmm Length of the test specimen. BS EN 1365-2:2014EN 1365-2:2014 (E) 7 Wexpmm Width of the test specimen exposed to heating. Wsupmm The transverse span of a two way spanning test specimen. Wspecmm The width of the test specimen. Am/V m-1Section factor of steel beams

35、Am m Surface area of a member per unit length V m2Volume of a member per unit length degrees Inclination angle 4 Test equipment The test equipment shall be as specified in EN 1363-1, and if applicable EN 1363-2. 5 Test conditions 5.1 Furnace a) The heating and pressure conditions and the furnace atm

36、osphere shall conform to those given in EN 1363-1 or, if applicable, EN 1363-2. b) In addition to a) the following applies: - The furnace pressure conditions shall be established 100 mm below the pressure reference line, see Figure 1. - For inclined test specimen, the furnace pressure conditions sha

37、ll be established 100 mm below the pressure reference line at the highest possible position, see Figures 1 and 2. 5.2 Loading conditions The test specimen shall be subjected to loads determined in accordance with EN 1363-1. The determination of the load shall be clearly indicated in the test report.

38、 The magnitude and the distribution of the load shall be such that the maximum moments and shear forces produced in the test specimen are representative of, or higher than those expected in practice. The load shall be applied uniformly, e.g. by a point loading system. Point loads shall be transferre

39、d to the test specimen through distribution plates; the total contact area between these and the floor surface shall be not more than 0,09 m2individually, or 16 % of the total surface area collectively. If the plates are made of steel or of materials with a similar high conductivity, they shall be i

40、nsulated from the surface of the test specimen. The loading equipment shall not inhibit the free movement of air at the top of the test specimen and, other than at the loading points, no part of the loading equipment shall be closer than 60 mm to the unexposed surface of the test specimen. 6 Test sp

41、ecimen 6.1 General Additional guidance on design of roof and floor constructions incorporating glazing is given in Annex A. BS EN 1365-2:2014EN 1365-2:2014 (E) 8 6.2 Size a) The test specimen shall be full size unless the actual size is larger than can be accommodated in the furnace. b) When the act

42、ual size cannot be accommodated in the furnace, the dimensions of the test construction shall be such that at least the following dimensions of the test specimen are exposed to the fire: - exposed length (Lexp): 4 m; - exposed width (Wexp): 3 m. One way spanning floor or roof constructions, without

43、ceilings, may have an exposed width between 2 m and 3 m, provided the relevant requirements given in 6.4 are accommodated. For floor and roof constructions with suspended or self supporting ceilings, Lexpand Wexpshall be related to the surface of the ceiling. c) For floor or roof constructions with

44、structural members that span one way only, the following specifications with respect to the span and length of the test specimen apply: - span (Lsup): Lexpplus up to half the length of the bearing at each end. The length of the bearing shall be selected so that the difference between Lsup and Lexp i

45、s kept to a minimum or as in practice, whichever is the smaller. - length (Lspec): Lexpplus up to 500 mm at each end (see Figure 3). d) For floor or roof constructions with structural members that span two ways, 6.2 c) applies to the main span. The span and width of the test specimen in the other di

46、rection shall be: - span (Wsup): Wexpplus up to half the length of the bearing at each end; - width (Wspec): Wexpplus up to 500 mm at each end. 6.3 Number 6.3.1 General One test specimen shall be tested for each specified support/restraint, or exposure and loading condition. More than one test will

47、be necessary if one test cannot adequately cover all of the constructional variations given in 6.4. 6.3.2 Pitched roof constructions without glazing In addition to 6.3.1 the following apply: a) Trussed rafter roof constructions shall be tested for each inclination of the bottom member (chord) (see 1

48、3d). b) For apex or monopitch roof constructions with a span normal to the inclination, the number of tests depends on the tested inclination and the required validity of the test result (see 13 d). BS EN 1365-2:2014EN 1365-2:2014 (E) 9 6.4 Design 6.4.1 General The test specimen shall simulate the c

49、onditions of the use of the floor or roof construction in practice. It shall include all construction details, materials and components, (including water proofing) and shall be supported in accordance with 6.4.6. An example of each type of joint or junction contained within the element for purposes of erection, construction or expansion, shall be incorporated in the test construction, even though such joints occur at greater centers than the relevant dimension of the test specimen. Different jointing systems shall not be included in a single test specimen, unless it