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1、BRITISH STANDARD BS EN ISO 140-4:1998 Acoustics Measurement of sound insulation in buildings and of building elements Part 4: Field measurements of airborne sound insulation between rooms The European Standard EN 140-4:1998 has the status of a British Standard ICS 91.120.20 Licensed Copy: sheffieldu
2、n sheffieldun, na, Mon Nov 20 03:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 140-4:1998 This British Standard, having been prepared under the direction of the Health and Environment Sector Board, was published under the authority of the Standards Board and comes into effect on 15 Octo
3、ber 1998 BSI 05-1999 ISBN 0 580 30513 9 National foreword This British Standard is the English language version of EN ISO 140-4:1998. It is identical with ISO 140-4:1998. It supersedes BS 2750-4:1980 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee EH/
4、1, Acoustics, to Subcommittee EH/1/6, Building acoustics, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor relat
5、ed international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards normally include an annex which lists normati
6、ve references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Corres
7、pondence 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. Compliance with a British Standard does not
8、 of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, page ii, pages 1 to 16, an inside back cover and a back cover. This standard has been updated (see copy
9、right date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO
10、 140-4:1998 BSI 05-1999i Contents Page National forewordInside front cover Foreword2 Forewordii Text of ISO 140-41 Annex ZA (normative) Normative references to international publications with their relevant European publications17 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:06:16 GMT+0
11、0:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 140-4 August 1998 ICS 91.120.00 Descriptors: See ISO document English version Acoustics M
12、easurement of sound insulation in buildings and of building elements Part 4: Field measurements of airborne sound insulation between rooms (ISO 140-4:1998) Acoustique Mesurage de lisolation acoustique des immeubles et des lments de construction Partie 4: Mesurage in situ de lisolement aux bruits ari
13、ens entre les pices (ISO 140-4:1998) Akustik Messung der Schalldmmung in Gebuden und von Bauteilen Teil 4: Messung der Luftschalldmmung zwischen Rumen in Gebuden (ISO 140-4:1998) This European Standard was approved by CEN on 14 August 1998. CEN members are bound to comply with the CEN/CENELEC Intern
14、al 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 national standards may be obtained on application to the Central Secretariat or to any CEN member.
15、 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 language and notified to the Central Secretariat has the same status as the official versions. CEN members ar
16、e the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation
17、 Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 140-4:1998 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:06:16 GMT+00:0
18、0 2006, Uncontrolled Copy, (c) BSI EN ISO 140-4:1998 BSI 05-1999 2 Foreword The text of the International Standard ISO 140-4:1998 has been prepared by Technical Committee ISO/TC 43 “Acoustics” in collaboration with Technical Committee CEN/TC 126 “Acoustic properties of building products and of build
19、ings”, the secretariat of which is held by AFNOR. 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 February 1999, and conflicting national standards shall be withdrawn at the latest by February 199
20、9. According to the CEN/CENELEC 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,
21、Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 140-4:1998 was approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents
22、Page Foreword2 1Scope1 2Normative references1 3Definitions1 4Equipment2 5Test arrangement3 6Test procedure and evaluation3 7Precision5 8Expression of result5 9Test report5 Annex A (normative) Qualification and positioning of the sound source6 Annex B (normative) Qualification for the measurement of
23、the sound insulation in octave bands7 Annex C (informative) Measurement of flanking transmission7 Annex D (informative) Guidance on measurements in the low frequency bands8 Annex E (informative) Forms for the expression of results9 Annex F (informative) Bibliography16 Licensed Copy: sheffieldun shef
24、fieldun, na, Mon Nov 20 03:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 140-4:1998 ii BSI 05-1999 Foreword ISO (the International Organization for Standardization) is a worldwide fed
25、eration of national standards bodies (ISO member 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 comm
26、ittee. International organizations, governmental 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. Draft International Standards adopted by the t
27、echnical 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 ISO 140-4 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building
28、acoustics. This second edition cancels and replaces the first edition (ISO 140-4:1978) which has been technically revised. ISO 140 consists of the following parts, under the general title Acoustics Measurement of sound insulation in buildings and of building elements: Part 1: Requirements of laborat
29、ory test facilities with suppressed flanking transmission; Part 2: Determination, verification and application of precision data; Part 3: Laboratory measurement of airborne sound insulation of building elements; Part 4: Field measurements of airborne sound insulation between rooms; Part 5: Field mea
30、surements of airborne sound insulation of faade elements and faades; Part 6: Laboratory measurements of impact sound insulation of floors; Part 7: Field measurements of impact sound insulation of floors; Part 8: Laboratory measurements of the reduction of transmitted impact noise by floor coverings
31、on a heavyweight standard floor; Part 9: Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it; Part 10: Laboratory measurement of airborne sound insulation of small building elements. Annex A and Annex B form an integral part of this part of
32、ISO 140. Annex C to Annex F are for information only. Descriptors: Acoustics, buildings, rooms, airborne sound, acoustic insulation, tests, field tests, acoustic tests, acoustic measurements. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI E
33、N ISO 140-4:1998 BSI 05-19991 1 Scope This part of ISO 140 specifies field methods for measuring the airborne sound insulation properties of interior walls, floors and doors between two rooms under diffuse sound field conditions in both rooms, and for determining the protection afforded to the occup
34、ants of the building. The methods give values for airborne sound insulation which are frequency dependent. They can be converted into a single number, characterizing the acoustic performance, by application of ISO 717-1. The results obtained can be used to compare sound insulation between rooms and
35、to compare actual sound insulation with specified requirements. NOTE 1Laboratory measurements of airborne sound insulation of building elements are dealt with in ISO 140-3. NOTE 2Field measurements of airborne sound insulation of faade elements and faades are dealt with in ISO 140-5. 2 Normative ref
36、erences The following standards contain provisions 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 e
37、ncouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 140-2:1991, Acoustics Measurement of sound insulation in buildings and of building elements Part 2
38、: Determination, verification and application of precision data. ISO 140-3:1995, Acoustics Measurement of sound insulation in buildings and of building elements Part 3: Laboratory measurements of airborne sound insulation of building elements. ISO 354:1985, Acoustics Measurement of sound absorption
39、in a reverberation room. ISO 717-1:1996, Acoustics Rating of sound insulation in buildings and of building elements Part 1: Airborne sound insulation. IEC 60651:1979, Sound level meters. IEC 60804:1985, Integrating-averaging sound level meters. IEC 60942:1988, Sound calibrators. IEC 61260:1995, Elec
40、troacoustics Octave band filters and fractional-octave band filters. 3 Definitions For the purposes of this part of ISO 140, the definitions given in ISO 140-3 and following definitions apply. 3.1 average sound pressure level in a room, L ten times the logarithm to the base 10 of the ratio of the sp
41、ace and time average of the sound pressure squared 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 radiation of a sound source or the near field of the boundaries (wall, etc.) is of significant influ
42、ence; it is expressed in decibels in practice, usually the sound pressure levels Lj are measured. In this case L is determined by where Lj are the sound pressure levels L1 to Ln at n different positions in the room 3.2 level difference, D difference, in decibels, in the space and time average sound
43、pressure levels produced in two rooms by one or more sound sources in one of them: where 3.3 normalized level difference, Dn level difference, in decibels, corresponding to the reference absorption area in the receiving room: where .(1) D = L1 L2.(2) L1is the average sound pressure level in the sour
44、ce room; L2is the average sound pressure level in the receiving room. .(3) Dis the level difference, in decibels; Ais the equivalent sound absorption area of the receiving room, in square metres; A0is the reference absorption area, in square metres (for rooms in dwellings or rooms of comparable size
45、: A0 = 10 m2). DnD10lg A A0 - - dB= Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 140-4:1998 2 BSI 05-1999 3.4 standardized level difference DnT level difference, in decibels, corresponding to a reference value of the reverberation
46、time in the receiving room: where NOTE 1The standardizing of the level difference to a reverberation time of 0,5 s takes into account that in dwellings with furniture the reverberation time has been found to be reasonably independent of the volume and of frequency and to be approximately equal to 0,
47、5 s. With this standardizing, DnT is dependent on the direction of the sound transmission if the two rooms have different volumes. NOTE 2The standardizing of the level difference to the reverberation time in the receiving room of T0 = 0,5 s is equivalent to standardizing the level difference with re
48、spect to a reference absorption area of A0 = 0,32 V where 3.5 apparent sound reduction index R ten times the logarithm to the base 10 of the ratio of the sound power W1 which is incident on a partition under test to the total sound power transmitted into the receiving room if, in addition to the sou
49、nd power W2 transmitted through the separating element, the sound power W3, transmitted through flanking elements or by other components, is significant; it is expressed in decibels: NOTE 1Explanations of W3 are given in Annex C. NOTE 2The expression “apparent sound transmission loss” is also in use in English-speaking countries. It is equivalent to “apparent sound reduction index”. NOTE 3In general, the sound power transmitted into the receiving room consists of the sum of several component
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