1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 15080-12:2011Extended application of resultsfrom fire resistance testsPart 12: Loadbearing masonry wallsBS EN 15080-12:2011 BRITISH STANDARDNational forewordThis British St
2、andard is the UK implementation of EN 15080-12:2011.The UK participation in its preparation was entrusted to TechnicalCommittee FSH/22/-/7, Fire resistance tests for partitions and walls.A list of organizations represented on this committee can beobtained on request to its secretary.This publication
3、 does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 71093 3ICS 13.220.50; 91.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under th
4、e authority of theStandards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationDate Text affectedBS EN 15080-12:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15080-12 January 2011 ICS 13.220.50; 91.060.10 English Version Extended application of results from f
5、ire resistance tests - Part 12: Loadbearing masonry walls Application tendue des rsultats des essais de rsistance au feu - Partie 12: Murs porteurs en maonnerie Erweiterter Anwendungsbereich der Ergebnisse aus Feuerwiderstandsprfungen - Teil 12: Tragende Mauerwerkswnde This European Standard was app
6、roved by CEN on 11 December 2010. CEN members 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 natio
7、nal standards may be obtained on application to 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 langua
8、ge and notified to the CEN-CENELEC Management 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvi
9、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussel
10、s 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15080-12:2011: EBS EN 15080-12:2011EN 15080-12:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .54 General principles54.1 General 54
11、.2 Classifications 64.3 Necessary additional information 65 Rules for extended application 75.1 Units 75.2 Masonry mortars and joints 95.3 Plaster, rendering or external covering .95.4 Load Level . 105.5 Geometrical parameters . 106 Report of the extended application analysis . 10Annex A (informativ
12、e) Examples of extended applications for loadbearing masonry walls 12A.1 Basis for the Definition: Test report according to EN 1365-1 (add photo) . 12A.2 Material Properties from Report: . 12A.2.1 Units . 12A.2.2 Mortar . 12A.2.3 Plaster or rendering 12A.3 Load . 12A.3.1 Centric application of the l
13、oad 12A.4 Test results: . 13A.5 Possible applications according to EN 15080-12 13A.5.1 Units . 13A.5.2 Masonry mortar: 14A.5.3 Plaster or rendering 14A.5.4 Load level 14A.5.5 Geometrical parameters . 14Annex B (informative) Recommendations for the installation 15B.1 Connection systems for REI walls
14、15B.2 Recesses and chases . 15Bibliography . 16BS EN 15080-12:2011EN 15080-12:2011 (E) 3 Foreword This document (EN 15080-12:2011) 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
15、 of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2011, and conflicting national standards shall be withdrawn at the latest by July 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of
16、patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of 89/106/EEC. According
17、 to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
18、Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 15080-12:2011EN 15080-12:2011 (E) 4 1 Scope This European Standard provides guidance, and where appropriate defines procedures, for variation
19、s of certain parameters and factors associated with the design of internal and external loadbearing walls that have been tested in accordance with EN 1365-1. Data from historic standard fire resistance tests may be used as supporting information. Manufactured stone masonry units according to EN 771-
20、5 and natural stone units according to EN 771-6 are not covered. This European Standard is not valid for reinforced masonry. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For und
21、ated references, the latest edition of the referenced document (including any amendments) applies. EN 771-1, Specification for masonry units Part 1: Clay masonry units EN 771-3, Specification for masonry units Part 3: Aggregate concrete masonry units (Dense and light-weight aggregates) EN 772-1, Met
22、hods of test for masonry units Part 1: Determination of compressive strength EN 772-16, Methods of test for masonry units Part 16: Determination of dimensions EN 998-1:2010, Specification for mortar for masonry Part 1: Rendering and plastering mortar EN 1363-1, Fire resistance tests Part 1: General
23、requirements EN 1363-2, Fire resistance tests Part 2: Alternative and additional procedures EN 1365-1, Fire resistance tests for loadbearing elements Part 1: Walls EN 1996-1-1, Eurocode 6 Design of masonry structures Part 1-1: General rules for reinforced and unreinforced masonry structures EN 1996-
24、1-2:2005, Eurocode 6 Design of masonry structures Part 1-2: General rules Structural fire design EN 1996-2, Eurocode 6 Design of masonry structures Part 2: Design considerations, selection of materials and execution of masonry EN 1996-3:2006, Eurocode 6 Design of masonry structures Part 3: Simplifie
25、d calculation methods for unreinforced masonry structures EN 13501-2, Fire classification of construction products and buildings elements Part 2 Classification using data from fire resistance tests, excluding ventilation services BS EN 15080-12:2011EN 15080-12:2011 (E) 5 3 Terms and definitions For
26、the purposes of this document, the terms and definitions given in EN 1996-1-2:2005 and the following apply. 3.1 unit grouping is defined in EN 1996-1-1 3.2 unfilled perpend joint vertical plain joint or joint with tongue and groove, not filled with mortar or adhesive 3.3 utilisation factor relation
27、between the applied load on the test specimen and the design resistance without partial safety factors NOTE For design resistance see EN 1996-1-1 or EN 1996-3. 3.4 historical test data test data generated by fire resistance tests that have been undertaken by a Notified Test Laboratory in accordance
28、with European and/or former and in accordance with standards NOTE 1 Previously existing test data is acceptable even though the test may not have been carried out using the plate thermometer as long as the necessary additional information, (see 4.3) is available. This data can only be used as descri
29、bed in this European Standard. NOTE 2 The temperature-time curve used is based on the one specified in EN 1363-1, which is also defined in ISO 834. 3.5 moisture content of units difference between the density of the units at the beginning of the fire test and the gross dry density of the units, rela
30、ted to the gross dry density of the units, in percent by mass 4 General principles 4.1 General (1) The fire behaviour of load bearing masonry mainly depends on: the masonry unit material - clay, calcium silicate, autoclaved aerated concrete, dense/lightweight aggregate concrete; the type of unit - s
31、olid or hollow (type of holes, percentage and direction of holes), shell and web thickness; the unit dimensions; the unit gross density; the unit compressive strength; the type of mortar - general purpose, thin layer or lightweight mortar; BS EN 15080-12:2011EN 15080-12:2011 (E) 6 the type of perpen
32、d joint filled or unfilled perpend joint, especially for unplastered walls; the use of finishes; the geometrical slenderness of the wall as defined in EN 1996-1-1; the level of the applied load; eccentricities; fire exposure of separating/non separating elements. (2) For the determination of values
33、by consideration of test results, the interpretation of any existing fire test results has to be based on the requirements for the relevant test method from EN 1363-1, EN 1363-2 and EN 1365-1. (3) For the evaluation of use of previously existing data, differences between the test methods, have to be
34、 considered. NOTE Differences to be considered are for example material properties, specimen dimensions, utilisation factor based on maximum loading, eccentricities, etc. (4) To establish the extended application, the rules given in Clause 5 shall be followed for each of the given parameters. (5) Ex
35、trapolations exceeding the rules of this European Standard are possible, provided that tests give evidence to do so. Such extrapolations have to be specified in the report, see Clause 6. 4.2 Classifications (1) All the given rules are always valid for the same classification. (2) Extrapolation is po
36、ssible for different wall thicknesses and geometries, different unit densities, compressive strengths, perforation patterns and sizes, different types of masonry mortar, different types of external covering, different load levels and eccentricities. (3) An extrapolation for higher fire resistances o
37、r from REI tests to REI-M or R is not possible. NOTE 1 In some cases, there are different extended application rules given for the classifications R, REI and REI-M. NOTE 2 In addition, the rules given in this European Standard for REI tests also apply for RE and REW tests. 4.3 Necessary additional i
38、nformation For the classification according to these extended application rules additional information on material properties and additional measurements during the test procedure according to EN 1363-1, EN 1365-1 and EN 1363-2 or historic standard fire test methods are necessary: measurement of the
39、 deflection of the test specimen at least in mid height, to allow for an extrapolation for height, see 5.5 (1); gross density, compressive strength and moisture content of the units; percentage of voids, web and shell thickness and combined thickness for perforated units; gross density and compressi
40、ve strength of the mortar; BS EN 15080-12:2011EN 15080-12:2011 (E) 7 thickness of unfilled perpend joints in unplastered or unrendered walls; thickness and type of plaster or render in rendered walls; measurement of applied load on the test specimens; determination of the utilisation factor. NOTE Th
41、e measurement of the temperature within the test specimen at least in mid-height across the wall thickness is advised to allow for a future calculation of fire resistances according to EN 1996-1-2. Thermocouples should be placed at least in depths of 10 mm, 30 mm and 50 mm from the exposed side and
42、then every 50 mm. 5 Rules for extended application 5.1 Units (1) Extrapolations are only possible within the same type of material e.g. tests on clay unit masonry with units according to EN 771-1 can only be used for extrapolations for clay unit masonry. For lightweight aggregate concrete units acco
43、rding to EN 771-3 extrapolations are only possible within lightweight aggregate concrete units. (2) The test results are valid for the tested type of unit. If solid units, i.e. group 1 units according to EN 1996-1-1 are tested, the results are only valid for group 1 units with the same or a smaller
44、percentage of voids. (3) For vertically perforated units (group 1, 2 and group 3 according to EN 1996-1-1), the test results can be applied for units with the same or a smaller percentage of voids. If the difference between the tested percentage of voids and the upper limit of the group in EN 1996-1
45、-1 is less than 5 % of the overall surface of the unit, test results are valid for all percentages of voids within that group. The tested percentage of voids can be rounded up to the next multiple of 5 %. (4) For vertically perforated units, the test results can be applied for units with the same or
46、 a higher thickness of webs and shells and for the same or higher values of the combined thickness. The value of the combined thickness can be rounded down to the next multiple of 10 mm/m. (5) Test results for vertically perforated units can be applied for solid units. (6) For the classification REI
47、 and R the test results are valid for the tested size of the unit and units larger in height, length and width. (7) For units with a length between 200 mm and 1000 mm, test results for a unit length from that range are valid for the whole range of unit lengths between 200 mm and 1000 mm. (8) For the
48、 classification REI-M, test results are valid for the tested length and width and units larger in length and width. It is not possible to extrapolate from tests on masonry walls with unit heights equal or smaller than 250 mm to units with greater heights. (9) For tested wall thicknesses up to 140 mm
49、, the test results are valid for masonry with units with the same or a higher declared value of the gross density of the units within the following ranges. unit density between 300 kg/m3 and 999 kg/m3: Tested density and densities up to 800 kg/m higher than the tested density up to a maximum gross dry density of 1600 kg/m. unit density between 1000 kg/m3 and 2200 kg/m3: Tested density and densities up to 600 kg/m3higher than
