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1、INTERNATIONAL STANDARD IS0 140-3 Second edition AMENDMENT 1 1995-05-1 5 2004-12-01 Acoustics - Measurement of sound insulation in buildings and of building elements - Part 3: Laboratory measurements of airborne sound insulation of building elements AMENDMENT 1 : Installation guidelines for lightweig
2、ht twin leaf partitions Acoustique - Mesurage de lisolement acoustique des immeubles et des lments de construction - Partie 3: Mesurage en laboratoire de laffaiblissement des bruits ariens par les lments de construction AMENDEMENT 1: Conditions particulires de montage des cloisons a doubles parement
3、s lgers Reference number IS0 140-3:1995/Amd.l:2004(E) 0 IS0 2004 IS0 140-3: 1995/Amd.l:2004( E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded
4、are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The IS0 Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Deta
5、ils of the sofiware products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IS0 member bodies. In the unlikely event that a problem r
6、elating to it is found, please inform the Central Secretariat at the address given below. O IS02004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm,
7、without permission in writing from either IS0 at the address below or ISOs member body in the country of the requester. IS0 copyright office Case postale 56 CH-I211 Geneva 20 Tel. + 41 22 749 O 1 11 Fax +41 227490947 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii O IS0 2004 -All
8、 rights reserved IS0 140-3:1995/Amd.l:2004(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each mem
9、ber 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 and non-governmental, in liaison with SO, also take part in the work. IS0 collaborates closely with the International Ele
10、ctrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adop
11、ted 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 casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of pate
12、nt rights. IS0 shall not be held responsible for identifying any or all such patent rights. Amendment 1 to IS0 140-3:1995 was prepared by the European Committee for Standardization (CEN) in collaboration with Technical Committee ISOTC 43, Acoustics, Subcommittee SC 2, Building acoustics, in accordan
13、ce with the Agreement on technical cooperation between IS0 and CEN (Vienna Agreement). O IS0 2004 -All rights reserved iii IS0 140-3: 1995/Amd.l:2004( E) Foreword This document (EN IS0 140-3:1995/AI :2004) has been prepared by Technical Committee CEN/TC 126 “Acoustic properties of building elements
14、and of buildings”, the secretariat of which is held by AFNOR, in collaboration with Technical Committee ISO/TC 43 “Acoustics”. This Amendment to the European Standard EN IS0 140-3:1995 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at
15、the latest by June 2005, and conflicting national standards shall be withdrawn at the latest by June 2005. According to the CENEENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech
16、Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. iv O IS0 2004 -All rights reserved IS0 140-3:1995/Amd.l:2004
17、(E) I n trod uct ion Evaluation of the results of a European Inter Laboratory Test in 1998 showed that the requirements given in IS0 140-1 are inadequate for lightweight twin partitions therefore the following annex is added. O IS0 2004 -All rights reserved V IS0 140-3:1995/Amd.l:2004(E) Annex H ( n
18、 o rm a t ive) Installation guidelines for lightweight twin leaf partitions The sound reduction index of lightweight twin leaf partitions is influenced by the mounting conditions in the test opening of the laboratory. The important installation parameters are the aperture (niche effect) depth and th
19、e position of the partition in relation to the acoustic break in the test aperture. 1 2 Key 1 source room 2 receiving room 3 acoustic break of the laboratory Figure H.l - Example for the position of the specimen relative to the acoustic break of the laboratory To improve the reproducibility between
20、laboratories and to facilitate comparison of sound reduction indices from different lightweight double wall products, the light weight twin leaf partition shall not be mounted across the acoustical break of the laboratory (Figure H.l). The aperture depth should meet the requirement in 5.2.1, as far
21、as practical. Other mounting conditions may be used but shall be fully described in the test report. NOTE break may result in higher values for the sound reduction index. Mounting the lightweight partition with one leaf on one side and the other leaf on the other side of the acoustic Other mounting
22、conditions may be appropriate for some twin leaf partitions e.g. in semidetached houses where the leaves may be vibrationally decoupled. In such cases the leaves should be mounted on either side of the acoustic break. O IS0 2004 -All rights reserved 1 IS0 140-3: 1995/Amd.l:2004( E) ICs 91.120.20 Pri
23、ce based on 1 page O IS0 2004 -All rights reserved m 4853903 ObOOb 908 R I I NTERNATI O NAL STANDARD IS0 140-3 Second edition 1995-05-1 5 Acoustics - Measurement of sound insulation in buildings and of building elements - Part 3: Laboratory measurements of airborne sound insulation of building eleme
24、nts Acoustique - Mesurage de lisolement acoustique des immeubles et des lments de construction - Partie 3: Mesurage en laboratoire de laffaiblissement des bruits ariens par les lments de construction Reference number IS0 140-3:1995(E) Foreword IS0 (the International Organization for Standardization)
25、 is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be repre
26、sented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standar
27、ds 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 casting a vote. International Standard IS0 140-3 was prepared by Technical Committee ISOflC 43, Acoustics, Subcommit
28、tee SC 2, Building acoustics. This second edition cancels and replaces the first edition (IS0 140-3:1978) and its amendment IS0 140-3: 1978/Amd.l: 1990. IS0 140 consists of the following parts, under the general title Acoustics - Measurement of sound insulation in buildings and of building elements:
29、 Part I: Requirements for laboratory test facilities with suppressed flanking transmission Part 2: Determination, verification and application of precision data Part 3: Laboratory measurements of airborne sound insulation of building elements Part 4: Field measurements of airborne sound insulation b
30、etween rooms Part 5: Field measurements of airborne sound insulation of facade elements and facades Part 6: Laboratory measurements of impact sound insulation of floors O IS0 1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form o
31、r by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 CH-1 21 1 Genve 20 Switzerland Printed in Switzerland Il = 4851903 Ob08078 780 0 IS0 IS0 140-3:1995(EI - Pa
32、rt 7: Field measurements of impact sound insulation of floors - Part 8: Laboratory measurement of the reduction of transmitted im- - Part 9: Laboratory measurement of room-to-room airborne sound pact noise by floor coverings on a solid standard floor insulation of a suspended ceiling with a plenum a
33、bove it - Part 1 O: Laboratory measurement of airborne sound insulation of small building elements - Part 12: Laboratory measurement of room-to-room airborne and im- Annexes A, B and C form an integral part of this part of IS0 140. Annexes D, E, F and G are for information only. pact sound insulatio
34、n of an access floor . 111 INTERNATIONAL STANDARD 0 IS0 IS0 140-3:1995(E) Acoustics - Measurement of sound insulation in buildings and of building elements - Part 3: Laboratory measurements of airborne sound insulation of building elements 1 Scope This part of IS0 140 specifies a laboratory method o
35、f measuring the airborne sound insulation of building elements such as walls, floors, doors, windows, faade elements and faades, except those classified as small building elements (for which a measuring method is specified in IS0 140-1O1). The results obtained can be used to design building elements
36、 with appropriate acoustic properties, to compare the sound insulation properties of building elements and to classify such elements according to their sound insulation capabilities. The measurements are performed in laboratory test facilities in which transmission of sound on flanking paths is supp
37、ressed. Results of measurements made in accordance with this part of IS0 140 therefore shall not be applied directly in the field without accounting for other factors affecting sound insulation, especially flanking transmission and loss factor. 2 Normative references The following standards contain
38、provisions which, through reference in this text, constitute provisions of this part of IS0 140. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 140 are encouraged to investigate the possibility
39、 of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 140-1 : L I , Acoustics - Measurement of sound insulation in buildings and of building elements - Part I: Requirements for laboratory test
40、 facilities with suppressed flanking transmission. IS0 140-2: 1991, Acoustics - Measurement of sound insulation in buildings and of building elements - Part 2: Determination, verification and application of precision data. IS0 354:1985, Acoustics - Measurement of sound absorption in a reverberation
41、room. IS0 717-1:-3), Acoustics - Rating of sound insu- lation in buildings and of building elements - Part 1: Airborne sound insulation. IEC 225:1966, Octave, half-octave and third-octave band filters intended for the analysis of sounds and vibrations. IEC 651 : 1979, Sound level meters. 1) IS0 140-
42、1 0:1991, Acoustics - Measurement of sound insulation in buildings and of building elements - Part IO: Lab- oratory measurement of airborne sound insulation of small building elements. 2) To be published. (Revision of IS0 140-1:1990) 3) To be published. (Revision of IS0 717-1:1982) 1 4853903 Ob08080
43、 339 IS0 140-3:1995(E) Q IS0 IEC 804:1985, Integrating-averaging sound level me- ters. where Li are the sound pressure levels L, to L, at n different positions in the room. IEC 942:1988, Sound calibrators. 3 Definitions For the purposes of this part of IS0 140, the following definitions apply. 3.1 a
44、verage sound pressure level in a room: Ten times the common logarithm of the ratio of the space and time average of the squared sound pressure to the square of the reference sound pressure, the space average being taken over the entire room with the exception of those parts where the direct radiatio
45、n of a sound source or the near field of the boundaries (walls, etc.) is of significant influence. This quantity is denoted by L and is expressed in decibels. if a continuously moving microphone is used, L is determined by . * . (1) 3.2 sound reduction index: Ten times the common logarithm of the ra
46、tio of the sound power W, which is incident on a partition under test to the sound power W, transmitted through the specimen. This quantity is denoted by R and is expressed in decibels. Wl w 2 R=10Ig- dB In this part of IS0 140 the sound reduction index is evaluated from R=L, -h+ 10 I g A A dB . . .
47、 (5) where L, is the average sound pressure level in the source room, in decibels; h is the average sound pressure level in the receiving room, in decibels; is the area of the test specimen, in square metres, which is equal to the free test opening; is the equivalent sound absorption area in the rec
48、eiving room, in square metres. S A NOTES where p is the sound pressure, in pascals; 1 The derivation of equation (5) from equation (4) assumes that the sound fields are perfectly diffuse and that the sound radiated into the receiving room is transmitted only through the specimen. po is the reference
49、 sound pressure and is equal to 20 pPa; is the integration time, in seconds. 2 The expression “sound transmission loss“ (TL) is also in use in English-speaking countries. It is equivalent to “sound reduction index“. T, If fixed microphone positions are used, L is deter- mined by 2 dB . p: +p; + . +pn L= 10 Ig where p1,p2 .,pn are r.m.s. sound pressures at n dif- ferent positions in the room. In practice, usually the sound pressure levels Li are measured. In this case L is determined by n L = 10 l g l O L “ o dB . i = l (3) 3.3 apparent sound reduction index: T