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1、BRITISH STANDARD BS EN 20140-10:1992 ISO 140-10: 1991 Acoustics Measurement of sound insulation in buildings and of building elements Part 10: Laboratory measurement of airborne sound insulation of small building elements The European Standard EN 20140-10:1992 has the status of a British Standard UD
2、C 699.844:534.6:534.83:620.1 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:27:07 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 20140-10:1992 This British Standard, having been prepared under the direction of the Environment and Pollution Standards Policy Committee, was published under
3、 the authority of the Standards Board and comes into effect on 15 October 1992 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference EPC/1 Draft for comment 91/54875 DC ISBN 0 580 21242 4 Cooperating organizations The European Committee for Standardization
4、 (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y.
5、FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail
6、et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBriti
7、sh Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:27:07 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 20140-10:1992 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii
8、Foreword2 1Scope3 2Normative references3 3Definition3 4Equipment3 5Laboratory requirements3 6Installation and operation of test objects4 7Test procedure and evaluation5 8Precision5 9Expression of results5 10Test report5 Annex A (normative) Correction of flanking transmission7 Annex B (normative) Loc
9、al changing of wall thickness7 Annex C (normative) Simulation of corner and edge positions8 National annex NA (informative) Committees responsible10 National annex NB (informative) Cross-referencesInside back cover Figure B.1 Local decrease of wall thickness7 Figure C.1 Drawing showing in principle
10、how to simulate a corner position by attaching reflective panels at right angles to the partition wall mounted in the test opening8 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:27:07 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 20140-10:1992 ii BSI 12-1999 National foreword This Bri
11、tish Standard has been prepared under the direction of the Environment and Pollution Standards Policy Committee. It is the English language version of EN 20140-10:1992 Acoustics Measurement of sound insulation in buildings and of building elements Part 10: Laboratory measurement of airborne sound in
12、sulation of small building elements, published by the European Committee for Standardization (CEN), which endorses ISO 140-10:1991 Acoustics Measurement of sound insulation in buildings and of building elements Part 10: Laboratory measurement of airborne sound insulation of small building elements,
13、published by the International Organization for Standardization (ISO). 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. Compliance with a British Standard does not of itself confer imm
14、unity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This wil
15、l be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:27:07 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 20140-10 July 1992 UDC 699.844:534.6:534.83:620.1 Descriptors: Acoustics, a
16、coustic insulation, buildings, structural members, acoustic tests, laboratory tests, acoustic measurements, airborne sound English version Acoustics Measurement of sound insulation in buildings and of building elements Part 10: Laboratory measurement of airborne sound insulation of small building el
17、ements (ISO 140-10:1991) Acoustique Mesurage de lisolation acoustique des immeubles et des lments de construction Partie 10: Mesurage en laboratoire de lisolation au bruit arien de petits lments de construction (ISO 140-10:1991) Akustik Messung der Schalldmmung in Gebuden und von Bauteilen Teil 10:
18、Messung der Luftschalldmmung kleiner Bauteile in Prfstnden (ISO 140-10:1991) This European Standard was approved by CEN on 1992-07-17. 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 s
19、tandard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any othe
20、r 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 Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, I
21、reland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1992 Copyright reserved to CEN me
22、mbers Ref. No. EN 20140-10:1992 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:27:07 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 20140-10:1992 BSI 12-1999 2 Foreword Following the positive result of the Unique Acceptance Procedure, CEN has adopted the International Standard ISO 140-10
23、:1991 Acoustics Measurement of sound insulation in buildings and of building elements Part 10: Laboratory measurement of airborne sound insulation of small building elements. This European Standard has been drawn up in order to comply with the request of the Standing Committee for construction follo
24、wing Council Directive 89/106/EEC on construction products and the provisional mandate “Protection against noise” (BC/CEN 08/1991) related to it and issued by EEC and EFTA. In the countries bound to implement this European Standard a national standard identical to this European Standard shall be pub
25、lished at the latest by 1993-01-31 and conflicting national standards shall be withdrawn at the latest by 1992-01-31. In accordance with the CEN/CENELEC Common Rules the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ic
26、eland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:27:07 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 20140-10:1992 BSI 12-19993 1 Scope This part of ISO 140 gives a laboratory me
27、thod of measuring airborne sound insulation under diffuse field conditions of such small building elements as are defined below. It is intended that the results obtained will be used to develop building elements with appropriate acoustical properties, to classify such elements according to their sou
28、nd insulation properties and to estimate their influence on the sound insulation of partition constructions in buildings. This part of ISO 140 applies to building elements, excluding windows and doors, with an area of less than 1 m2 and which occur in a certain number of discrete sizes with well-def
29、ined lateral dimensions and which transmit sound between two adjacent rooms or between one room and the open air independently of the adjoining building elements. Some examples of equipment covered by this part of ISO 140 are transfer air devices airing panels (ventilators) outdoor air intakes elect
30、rical raceways (cable ducts) transit sealing systems The method given is not primarily intended for components that constitute part of an integrated unit for which the associated sound transmission might depend on an interplay of components. 2 Normative references The following standards contain pro
31、visions which, through reference in this text, constitute provisions of this part of ISO 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 ISO 140 are encouraged to investigate the possibility of
32、 applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 140-1:1990, Acoustics Measurement of sound insulation in buildings and of building elements Part 1: Requirements for laboratories. ISO 140-3:
33、1978, Acoustics Measurement of sound insulation in buildings and of building elements Part 3: Laboratory measurements of airborne sound insulation of building elements. ISO 717-1:1982, Acoustics Rating of sound insulation in buildings and of building elements Part 1: Airborne sound insulation in bui
34、ldings and of interior building elements. ISO 717-3:1982, Acoustics Rating of sound insulation in buildings and of building elements Part 3: Airborne sound insulation of facade elements and facades. 3 Definition For the purposes of this part of ISO 140, the following definition applies. 3.1 element-
35、normalized level difference for the purposes of this test method, the element-normalized level difference is given by equation (1). It is denoted by Dn,e and is expressed in decibels where 4 Equipment The measurement equipment shall comply with the requirements given for equipment in ISO 140-3. 5 La
36、boratory requirements 5.1 Rooms Laboratory test facilities shall comply with the requirements given for laboratory test facilities in ISO 140-1. 5.2 Partitions The test object is much smaller than the available test opening. A partition of sufficiently high sound insulation shall be built in the tes
37、t opening; the object shall be placed in this partition. The sound transmitted through this partition and any other indirect path shall be either: a) negligible compared with the sound transmitted through the test object, or, if this condition cannot be filled, b) the measured values shall be correc
38、ted for the influence of flanking transmission. The flanking transmission shall be determined by measuring the apparent sound insulation of the partition wall inserted in the test opening. This measurement can be carried out before making the opening for the test object or with plates having a high
39、sound insulation on both sides of the opening. Dn,e = L1 L2 + 10 lg (A0/A) dB. . . (1) L1is the average sound pressure level in the source room, in decibels; L2is the average sound pressure level in the receiving room, in decibels; A0is the reference area, in square metres (for the laboratory, A0 =
40、10); Ais the equivalent absorption area in the receiving room, in square metres. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:27:07 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 20140-10:1992 4 BSI 12-1999 It is convenient to express this sound insulation in terms of the element-normali
41、zed level difference according to equation (1). The flanking transmission expressed as an equivalent Dn,e is denoted by Dn,e,F. If the measured value of the element-normalized level difference for a test object is less than Dn,e,F 10 dB, the indirectly transmitted sound is considered negligible. If
42、the measured value is larger than or equal to Dn,e,F 10 dB, the measured value shall be corrected using the procedure specified in Annex A. NOTE 1Difficulties with an unsatisfactorily low margin between the flanking transmission and the transmission via the test object can be avoided by increasing t
43、he number of test objects inserted in the partition (see 6.3.3). 6 Installation and operation of test objects 6.1 General As the sound insulation of small building elements depends on their dimensions, reliable values can be obtained only by testing every actual size. 6.2 Mounting of test objects En
44、sure that the test object is installed in a manner representative of field practice with a careful simulation of normal connections and sealing conditions at the perimeter and at joints within the unit. If the test object is intended to be openable, install it for test so that it can be opened and c
45、losed in the normal manner. Open and close it at least ten times immediately before testing. In order to achieve a realistic wall thickness around the element, it might be practical or necessary either to increase or decrease the thickness of the partition wall in the area around the element. Rules
46、for increasing or decreasing the thickness locally are given in Annex B. 6.3 Location of test objects 6.3.1 Mounting positions When a small building unit is mounted near one or more reflecting planes, the sound transmission may differ appreciably from that obtained when the unit is mounted through a
47、 partition but away from any adjoining room surface. Therefore, mount the equipment to be tested through the partition in positions representative of normal usage. On devices which can be used at several different positions, carry out measurements at least with an edge present in both rooms. For tra
48、nsfer air devices and electrical raceways which are normally mounted near an adjoining reflective wall, the specific mounting positions are stated in 6.4 and 6.5. For other types of equipment, the rules given in 6.3.1.1 to 6.3.1.3 shall be observed. 6.3.1.1 Equipment used away from walls Install equ
49、ipment mounted through a partition but normally located away from an adjoining wall, floor or ceiling in such a manner that no part is within 1,00 m of a surface at right angles to the mounting surface; 0,85 m will be sufficient if several elements are tested at the same time. 6.3.1.2 Equipment used near an edge Locate equipment mounted through a partition and normally located near an adjoining wall, floor or ceiling, and away from a corner, at least 1,00 m (0,85 m if several elements are tested at the s