1、STD-BSI BS EN L3b3-2-ENGL 1999 E Lb2llbbS OBL283ll bllb W I BRITISH STANDARD Fire resistance tests - Part 2: Alternative and additional procedures The European Standard EN 1363219% has the status of a British Stanard ICs 13.220.50 IS EN .363-2:1999 -0 I -9 -111 NO COPYING WITHOUT BSI PERMISSION EXCE
2、PT AS PERMITTED BY COPYRIGKT LAW u u STD*BSI BS EN 33b3-2-ENGL 3797 = lb2ilbb7 0832835 582 W been prepared under the irection of the Health and Environment Sector Committee, was published under the authority of the Standards Committee and comes into effect on 16 November 1999 AmdNo. O BSI 11-1999 IS
3、BN O 680 32420 6 BS EN 1363-21999 DatR comments National foreword This British Standard is the English language version of EN 1363-21999. The UK participation in its prepamtion was entrusted by Technical Committee FSw22, Fire resistance tests, to Subcommittee FSH/22/1, General aspects of fire resist
4、ance testing, which has the responsibfity to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests infor
5、me them in the K. A lisi of organizations represented on this subcommittee can be obtained on request to its secre-. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the sectio
6、n entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. C
7、ompliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a hnt cover, an inside front cover, the EN title page, paga 2 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indica
8、tes when the document was last issued. STD*BSI 6s EN 13b3-2-ENGL 1997 1b21ibb9 081283b Li39 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1363-2 August 1999 ICs 13.220.50 English version Fire resistance tests - Part 2: Alternative and additional procedures Essais de rsistance au feu -Partie 2
9、: Modes opratoires de substitution ou additionnels Feuerwiderstandsprfungen - Teil 2: Altemative und ergflnzende Vexfahren niis European Standard was approved by CEN on 18 Febtuary 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givi
10、ng this European Standard the status of a national standard without any almasion. Up-to-date lists and bibliographical references conceming such national standards may be obtained on application to the Central Secretariat or to any CEN member. “his European Standard exists in three official versions
11、 (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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Ausiria, Belgium, Czec
12、h Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Pomigal, Spain, Sweden, Switzerland and United Kingdom. cen EUROPEAN COMMEE FOR STANDARDIZATION EUROPISCHES KOMEE FUR NORMUNG COMM EUROPEEN DE NORMALISATION Centrai Secretariat: rue de Sa
13、ssar 36, B-1050 Brussels O 1999 CW Ail rigtits of exploitation in any form and by any means reserved worldwide for CEN nanonal Members. Ref. NO. EN 1363-21999 E Page 2 EN 1363-2: 1999 Contents Foreword Introuction 1 scope 2 Normative references 3 Definitions 4 Hydrocarboncurve 5 External fire exposu
14、re curve 6 Slow heating curve 7 Impact test 8 Measurement of radiation Page 3 4 5 5 5 5 7 9 10 12 QBSI 11-1999 STD=BSI BS EN 13b3-2-ENCL 1999 lb2Libb9 0812838 291 D Page 3 EN 1363-2: 1999 Foreword This European Standard has been prepared by Technical Committee CENiTC 127 ?Fire safety in buildings?,
15、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, at the latest by March 2001, and conflicting national standards shall be withdrawn at the latest by March 2001. According to
16、 the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
17、 Sweden, Switzerland and the United Kingdom. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the Construction Products Directive. EN 1363 ?Fire resistance tests? consists
18、of the following Part 1: General requirements Pari 2: Alternative and additional procedures Part 3: Verification of furnace performance (published as an ENV) BBSI 11-1999 STD-BSI BS EN 13b3-2-ENGL 1999 m Lb2qbb9 0832839 128 m Page 4 EN 1363-21999 Introduction The general requirements for fire resist
19、ance testing are given in EN 1363-1. However, in practice it is possible to identify conditions or scenarios where the standard conditions, given in EN 1363-1, are inappropriate or where additional factors need to be considered. This may be because of the nature of a product, construction or assembl
20、y, together with its intended use; or because of a regulatory requirement in a particular member state. This Par Tis the average required furnace temperature in OC See figure 1. 4.3 Tolerances The percentage deviation (de) in the area of the curve of the average temperature recorded by the specified
21、 hace thermocouples versus time from the area of the specified temperature-time curve shall be within a) 15% for 5 60 where 4 =A, A - As x 100 BSI 11-1999 Page 7 EN 1363-21999 de is the percentage deviation A is the area under the actual hace temperaturetime curve As is the area under the specified
22、temperature-time curve t is the time in minutes All areas shall be computed by the same method, i.e. by the summation of areas at intervals not exceeding one minute and shall be calculated from time zero. At any time after the first 10 min of test, the temperature recorded by any thermocouple in the
23、 furnace shall not differ from the corresponding temperature of the specified temperature-time curve by more than 100 T. For test specimens which burn rapidly, a deviation in excess of 100 OC above the specified temperaturehime curve may be exceeded for a period not in excess of 10 min provided that
24、 such excess deviation is clearly identified as being associated with the sudden ignition of significant quantities of combustible materials increasing the gas temperature in the furnace. 5 External fire exposure curve 5.1 General EN 1363-1 defines the heating conditions, in terms of a specified tem
25、perature-time relationship, for the determination of fire resistance. in some cases elements may be exposed to conditions which are less severe than when the element or structure is exposed to a compartment fire. Examples of this are walls at the perimeter of a building which may be exposed to an ex
26、temal fire or flames coming out of windows. There is also a need to ensure that the nature of fire protection is such that the re-entry of the fire into the building is prevented. Because of the nature of external fire with the additional possibilities for heat dissipation, a lower level of heat exp
27、osure is given. This exposure condition is only relevant to the assessment of the fire resistance of separating elements. Other evaluation techniques exist for the evaluation of beams and columns and for measuring external fire spread. Where there is an identified requirement for such a fire exposur
28、e, the following external fire exposure curve shall be used. 5.2 Expression of temperature-time curve A temperature-time curve to be designated as the external fire exposure curve shall be defined by the following expression. T = 660 1 - 0,687 e - 0932t - 0,3 13 e -3,8t + 20 BSI 11-1999 Page 8 EN 13
29、63-21999 where t is the time from start of test, in minutes; Tis the average required furnace temperature in OC see figure 1. 5.3 Tolerances The percentage deviation, 4, in the area of the curve of the average temperature recorded by the specified furnace thermocouples versus time from the area of t
30、he specified temperature-time curve shall be within a) 15% for 5ct510 b) (15 - 0,5 -lo)% for 10ct530 c) (5 - 0,083 (t-30)% for 30 c t 5 60 d) 2,5% for t60 where de is the percentage deviation A is the area under the actual furnace temperature-time curve A, is the area under the specified temperature
31、-time curve t is the time in minutes All areas shall be computed by the same method, i.e by the summation of areas at intervals not exceeding one min and shall be calculated from time zero. At any time after the first 10 min of test, the temperature recorded by any thermocouple in the hace shall not
32、 differ from the corresponding temperature of the specified temperature-time curve by more than 100 OC. For test specimens which burn rapidly, a deviation in excess of 100 OC above the specified temperatdtime curve may be exceeded for a period not in excess of 10 min provided that such excess deviat
33、ion is clearly identified as being associated with the sudden ignition of significant quantities of combustible materials increasing the gas temperature in the funiace. OBSI 11-1999 Page 9 EN 1363-2: 1999 6 Slow heating curve 6.1 General EN 1363-1 defines the heating conditions, in terms of a specif
34、ied temperature-time relationship, for the determination of fire resistance. The fire resistance of some products determined using the standard temperature-time curve, as specified in EN 1363-1, may be substantially reduced in a slowly growing fire. Examples are products which are reactive under the
35、 influence of heat. For this reason a slow growing temperature-time curve is proposed. Where there is an identified requirement for such a fire exposure, the following slow heating curve shall be used. 6.2 Expression of temperature-time curve A temperature-time curve to be designated as the slow hea
36、ting curve shall be defined by the following expression: for O21 T = 345 log 10 (8 (t - 20) + 1) + 20 where t is the time from start of test, in minutes; T is the average required hace temperature in OC See figure 1. 63 Tolerances The percentage deviation, de, in the area of the curve of the average
37、 temperature recorded by the specified furnace thermocouples versus time from the area of the specified temperature-time curve shall be within b) (15 - 0,5 (?-lo)% for 10cti30 C) (5 - 0,083 (t-30)% for 30 60 where de =- A- As XI00 4 BBSI 11-1999 Page 10 EN 1363-21999 4 is the percentage deviation A
38、is the area under the actual furnace temperature-time curve A, is the area under the specified temperature-time curve t is the time in minutes All areas shall be computed by the same method, i.e. by the summation of areas at intervals not exceeding 1 min and shall be calculated from time zero. At an
39、y time after the first 10 min of test, the temperature recorded by any thermocouple in the fumace shall not differ from the corresponding temperature of the specified temperature-time curve by more than 100 “C. For test specimens which burn rapidly, a deviation in excess of 100 “C above the specifie
40、d temperaturdtime curve, as specified in EN 1363-1, may be exceeded for a period not in excess of 10 min provided that such excess deviation is clearly identified as being associated with the sudden ignition of significant quantities of combustible materials increasing the gas temperature in the fur
41、nace. 6.4 Assessment of performance Performance shall be assessed by comparing the behaviour of samples tested using the slow heating curve with that obtained using the standard temperature-time curve, as specified in EN 1363-1. The samples shall be identical for each exposure condition, but they ne
42、ed not necessarily be the element to be classified. The samples are defined in the appropriate test method. 6.5 Criteria The periods for compliance with the classification criteria, when evaluated using the slow heating curve, shall be equivalent to those achieved with the standard temperaturdtime c
43、urve, as specified in EN 1363-1, plus 20 minutes. if the times during which the criteria are satisfied are not equivalent, then the element shall be classified for the shorter duration as Specified above. 7 Impacttest 7.1 General The fire resistance of specific classes of walls with a fue separating
44、 function can be influenced by impacts arising from the failure of oher components or objects exposed to fire. A method is described to define a reference impact procedure which, if required, can be applied to loadbearing or non-loadbearing fite resisting walls. 7.2 Apparatus In addition to the test
45、 equipment specified in EN 1363-1, and if applicable EN 1364-1 and EN 1365-1, the following is required: The impact device shall be suspended from a rigid support or frame constructed so as not to interfere with deformations of the test specimen under fire test conditions. The irnpact energy is obta
46、ined by the pendular fall of a spheroconical bag (figure 2) filled with lead shot. The impact body consists of a double sheet sack which has the dimensions 650 mm x 1200 mm when empty. It is filled with bags each containing 10 kg of lead shot of diameter 2 mm to 3 mm and closed by a steel band. BSI
47、11-1999 STDBBSI BS EN 13b3-2-ENGL 1797 1b24bb7 OBL284b 3b8 Page 11 EN 1363-2: 1999 The filled sack is surrounded by a steel wire net with a basic area of 1200 mm x 1200 mm, mesh 50 mm x 50 mm, diameter of steel wire 5 mm. The total mass of the impact body is 200 kg. The impact body is suspended by i
48、ts ring to a steel cable attached to a fixed point on the test apparatus (see figure 2) and arranged so that when in the resting position it is just touching the building element at the predicted point of impact with a length of the pendulum from the fixing point to the centre of the bag of (2750 I
49、50) mm. The predicted point of impact shall be the centre of the largest panel near to the centre of the test specimen. 73 Application of impact The impact body is brought to its starting position by raising it pendularly by a suitable lifting device. For this purpose a steel band consisting of two wires of 6 mm diameter shall be wrapped tightly around the centre of the sack and equipped with a ring for the fixing of the lifting device. The drop height 1.5 m is the difference in the level of a cleariy marked horizontal line around the middle of the bag (see fig
