ISO 834-12-2012 Fire resistance tests - Elements of building construction - Part 12 Specific requirements for separating elements evaluated on less than full sc.pdf

1、 ISO 2012 Fire resistance tests Elements of building construction Part 12: Specific requirements for separating elements evaluated on less than full scale furnaces Essais de rsistance au feu lments de construction Partie 12: Exigences spcifiques pour lments de sparation valus dans des fours de dimen

2、sions rduites INTERNATIONAL STANDARD ISO 834-12 First edition 2012-11-01 Reference number ISO 834-12:2012(E) ISO 834-12:2012(E)ii ISO 2012 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utili

3、zed in any form or by any means, electronic or mechanical, including photocopying and microfilm, without 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 +

4、 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 834-12:2012(E) ISO 2012 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 Symbols and abbreviated terms . 2 5 Test equipment. 2 5.1

5、Test furnace 3 6 Test conditions . 3 7 Test specimen preparation 3 7.1 Design . 3 7.2 Specimen size . 3 7.3 Number of test specimens . 3 7.4 Specimen conditioning . 4 7.5 Specimen installation and restraint 4 8 Application of instrumentation 4 8.1 Furnace thermocouples (plate thermometer) . 4 8.2 Un

6、exposed specimen thermocouples . 5 8.3 Deflection measurement 5 8.4 Pressure 5 9 Test procedure 5 9.1 Furnace control 5 9.2 Measurements and observations 6 10 Performance criteria 6 11 Validity of the test 6 12 Expression of results 6 13 Test report . 6 Annex A (informative) Direct application of re

7、sults 7 Annex B (informative) Guidance for justification for smaller specimen size in less than full scale fire resistance furnace 8 Bibliography 9 ISO 834-12:2012(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member

8、bodies). The work of preparing International Standards is normally carried out through ISO technical committees. 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

9、and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directive

10、s, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies c

11、asting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 834-12 w a s pr epa r ed by Tech n ic a l Com m it t ee ISO/TC 92, Fire safety, Su

12、bcom m it t ee SC 2, Fire containment. ISO 834 consists of the following parts, under the general title Fire resistance tests Elements of building construction: Part 1: General requirements Part 2: Guidance on measuring uniformity of furnace exposure on test samples Technical Report Part 3: Commenta

13、ry on test method and guide to the application of the outputs from the fire-resistance test Technical Report Part 4: Specific requirements for loadbearing vertical separating elements Part 5: Specific requirements for loadbearing horizontal separating elements Part 6: Specific requirements for beams

14、 Part 7: Specific requirements for columns Part 8: Specific requirements for non-loadbearing vertical separating elements Part 9: Specific requirements for non-loadbearing ceiling elements Part 12: Specific requirements for separating elements evaluated on less than full scale furnaces The following

15、 parts are under preparation: Part 10: Specific requirements to determine the contribution of applied fire protection materials to structural elements Part 11: Specific requirements for the assessment of fire protection to structural steel elementsiv ISO 2012 All rights reserved ISO 834-12:2012(E) I

16、ntroduction This part of ISO 834 contains specific requirements for fire resistance testing which are unique to the elements of construction described as separating non-loadbearing elements both horizontal and vertical. The requirements for these non-loadbearing elements are intended to be applied i

17、n appropriate conjunction with the detailed and general requirements contained in ISO 834-1. ISO 2012 All rights reserved v Fire resistance tests Elements of building construction Part 12: Specific requirements for separating elements evaluated on less than full scale furnaces 1 Scope This part of I

18、SO 834 specifies the procedures to be followed for determining the fire resistance of non- load-bearing separating elements when exposed to heating on one face when the specimen size is such that a less than full scale fire resistance furnace is justified. This condition is particularly found in the

19、 testing of separating elements in transport applications since the end-use dimensions of the barrier products are often smaller than those specified in other parts of ISO 834. Specimen sizes requiring less than full size resistance furnaces are also found when testing elements to be fitted into a s

20、eparating element, such as pipe penetration systems, ducts, dampers and cable transits. The test is not appropriate for the evaluation of curtain walls (non-load-bearing external walls suspended from the ends of floor slabs) or walls containing doors or glazing. Tests of walls containing doors are c

21、overed by ISO 3008; tests of walls containing glazing are covered by ISO 3009. The application of this test to other untested forms of construction is acceptable when the construction complies with the direct field of application as given in this part of ISO 834 or when it is subjected to a field of

22、 extended application analysis in accordance with ISO/TR 12470. NOTE Since ISO/TR 12470 gives only general guidelines, specific extended application analyses are to be performed only by experts in fire resistant constructions. C a u t i o n A t t e n t i o n i s d r a w n t o t h e f a c t t h a t f

23、 i r e t e s t i n g m a y b e h a z a r d o u s a n d t h a t t h e r e is a possibility that toxic and/or harmful smoke and gases may be evolved during the test. Mechanical and operational hazards may also arise during the construction of the test elements or structures, their testing and disposal

24、 of test residues. An assessment of all potential hazards and risks to health shall be made and safety precautions shall be identified and provided. Written safety instructions shall be issued. Appropriate training shall be given to relevant personnel. Laboratory personnel shall ensure that they fol

25、low written safety instructions at all times. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any a

26、mendments) applies. ISO 13943, Fire tests Vocabulary ISO 834-1, Fire resistance tests Elements of building construction Part 1 General requirements for fire resistance testing 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 834-1 and ISO 13943, and t

27、he following apply. INTERNATIONAL ST ANDARD ISO 834-12:2012(E) ISO 2012 All rights reserved 1 ISO 834-12:2012(E) 3.1 separating elements building elements, such as walls, bulkheads or ceilings, which are required to act as fire separations or fire barriers; divide buildings (including ships, airplan

28、es, trains, etc.) into fire compartments or fire zones; or separate a building from adjoining buildings, in order to resist the spread of fire to or from adjoining compartments or buildings 3.2 non-loadbearing separating element separating element designed not to be subject to any load other than it

29、s self-weight 3.3 internal non-loadbearing wall wall, which provides fire separation which may be exposed separately to a fire from either side 3.4 external non-loadbearing wall wall forming the external envelope of a building which may be exposed separately to an internal or an external fire 3.5 in

30、sulated non-loadbearing separating element separating element which satisfies both the integrity and insulation criteria for the anticipated fire resistance period 3.6 standard supporting construction form of construction used to close off the furnace and to support the non-loadbearing separating el

31、ement being evaluated and which has known resistance to thermal distortion 3.7 plinth form of standard supporting construction that reduces the height of the opening by raising the support base to accommodate the test specimen 3.8 uninsulated non-loadbearing separating element separating element whi

32、ch satisfies the integrity criteria for the anticipated uninsulated fire resistance period, but which is not required to meet the thermal insulating criterion contained in ISO 834-1 4 Symbols and abbreviated terms Symbols and designations appropriate to this test are given in ISO 834-1. 5 Test equip

33、ment Equipment employed in the conduct of this test consists of a furnace, restraint and support frames, and instrumentation as specified in ISO 834-1 and this part of ISO 834. The intent of this part of ISO 834 is to describe applicable furnaces to be used in evaluating test elements that are norma

34、lly not used in dimensions that require the use of a full scale test furnace (as described in ISO 834-1, but that are capable of exposing the test specimen to similar heat regimes. Since applied loads do not scale well when the specimen sizes are reduced, this part of ISO 834 is for evaluating non-l

35、oadbearing specimens only. NOTE Utilizing furnaces of less than full scale results in reduced testing fees and effort, while yielding similar test results. Potential applications include product development and extended applications. Take care when evaluating test results to be assured that the redu

36、ced furnace size did not influence the movement of test sample components resulting from thermal exposure such as adhesion of protective coatings and sheathing materials.2 ISO 2012 All rights reserved ISO 834-12:2012(E) 5.1 Test furnace Test furnaces used in evaluating test elements of less than ful

37、l scale dimensions shall be capable of maintaining any required pressure, temperature or restraining conditions as given in ISO 834-1. Vertical furnaces and horizontal furnaces shall be capable of uniformly exposing the entire surface of a test specimen. Consequently, the furnace shall be at least a

38、s large as the width and height of the test element, with a minimum depth of 0,5m. Practice has shown that deeper furnaces are more uniform in their exposure. 6 Test conditions The heating and pressure conditions and the furnace atmosphere shall conform to those given in ISO 834-1. 7 Test specimen p

39、reparation 7.1 Design 7.1.1 General The test specimen shall be either: a) fully representative of the construction intended for use in practice, including any surface finishes and fittings which are essential and may influence its behaviour in the test, or b) designed to obtain the widest applicabil

40、ity of the test result to other similar constructions. The design features which influence fire performance that should be included to give the widest application can be derived from the field of direct application. The test specimen shall not contain mixtures of different types of construction, e.g

41、. brick or blocks in a wall, unless this is fully representative of the construction in practice. When separating elements incorporate services, such as electrical junction boxes or surface finishes, which are an integral part of the design of the element, these shall be included in the test specime

42、n. 7.2 Specimen size In some cases, in particular in transport media, actual dimensions of samples are smaller than the dimensions of the full scale furnace requirements of ISO 834-1. ISO 834-1 describes conditions under which these samples can be tested. Specimens should be evaluated at the largest

43、 dimensions for which they will be used in the field when these dimensions are smaller than specified in ISO 834-1. The specimen shall have a width of at least 1m, and a length or height of at least 1m. 7.3 Number of test specimens For symmetrical constructions only one test specimen is required unl

44、ess otherwise required by this part of ISO 834. For asymmetrical constructions required to resist fire from either side, test specimens representative of the construction shall be subjected to fire exposure from each side unless it can be established that the fire exposure of a particular face would

45、 be more onerous. Asymmetrical constructions required to resist fire from one specified side only shall be subjected to fire exposure from that side only. ISO 2012 All rights reserved 3 ISO 834-12:2012(E) 7.4 Specimen conditioning At the time of the test the strength and moisture content of the test

46、 specimens shall approximate the conditions expected in normal service. This includes any infills and jointing materials. Guidance on conditioning is given in ISO 834-1. After equilibrium has been achieved the moisture content or state of cure shall be determined and recorded. Any supporting constru

47、ction, including the lining to the test frame, is exempt from this requirement. 7.5 Specimen installation and restraint 7.5.1 General The test specimen shall be installed in the test frame and, if used, the supporting construction representative for the practical use. The test specimen shall be moun

48、ted as near as possible to the exposed vertical or horizontal plane of the test frame or supporting construction as appropriate, unless in practice a different position is used. The whole area of the test construction shall be exposed to the heating conditions. 7.5.2 Standard supporting construction

49、 If the size of the test specimen is smaller than the opening in the test frame then it shall be installed in the test frame using one of the following approaches: a) Where the height of a vertical test specimen is smaller than the height of the test frame opening, then a plinth shall be provided to reduce the opening to the required height. The plinth shall possess sufficient stability for the test specimen. b) Where the width of a vertical test specimen is smaller, a rigid supporting construction sh