1、BRITISH STANDARD BS EN ISO 17624:2004 Acoustics Guidelines for noise control in offices and workrooms by means of acoustical screens The European Standard EN ISO 17624:2004 has the status of a British Standard ICS 13.140 BS EN ISO 17624:2004 This British Standard was published under the authority of
2、 the Standards Policy and Strategy Committee on 24 January 2005 BSI 24 January 2005 ISBN 0 580 45310 3 National foreword This British Standard is the official English language version of EN ISO 17624:2004. It is identical with ISO 17624:2004. The UK participation in its preparation was entrusted by
3、Technical Committee EH/1, Acoustics, to Subcommittee EH/1/3, Residential and industrial noise, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international o
4、r European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to inc
5、lude all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enqu
6、iries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword p
7、age, the ISO title page, pages ii to v, a blank page, pages 1 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROP
8、ISCHENORM ENISO17624 December2004 ICS13.140 Englishversion AcousticsGuidelinesfornoisecontrolinofficesand workroomsbymeansofacousticalscreens(ISO17624:2004) AcoustiqueLignesdirectricespourlarductiondubruit danslesbureauxetlocauxdetravailaumoyendcrans acoustiques(ISO17624:2004) AkustikLeitfadenfrdenS
9、challschutzinBrosund ArbeitsrumendurchSchallschirme(ISO17624:2004) ThisEuropeanStandardwasapprovedbyCENon21June2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelists
10、andbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguagean
11、dnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Sl
12、ovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.E
13、NISO17624:2004:EI NESO 71:4262004 (E) 2 Foreword The text of ISO 17624:2004 has been prepared by Technical Committee ISO/TC 43 “ Acoustics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 17624:2004 by Technical Committee CEN/TC 43 “ Acoustics “, the sec
14、retariat of which is held by DS. 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 June 2005, and conflicting national standards shall be withdrawn at the latest by June 2005. According to the CEN/C
15、ENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, M
16、alta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 17624:2004 has been approved by CEN as EN ISO 17624:2004 without any modifications. ENISO17624:2004INTERNATIONAL STANDARD ISO 17624 First edition 2004-05
17、-15 Reference number ISO 17624:2004(E) OSI 2004 Acoustics Guidelines for noise control in offices and workrooms by means of acoustical screens Acoustique Lignes directrices pour la rduction du bruit dans les bureaux et locaux de travail au moyen dcrans acoustiquesENISO17624:2004ISO 17624:2004(E) ii
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21、h sserdda vigoleb new. ISO 2004 Alr lithgs reresv.de sselnU otherwise sficep,dei rap ont fo thbup silitaciam nocudorper eb yde or tuilidez na nif yorm ro by nam ysnae, tcelerm ro cinoecinahcal, phot gnidulcnicopom dna gniyicrfomli, tiwuoht repsimsi noin wrtif gnirtie mohI reSO ta the asserdd ebwol o
22、r ISOmem sreb obyd t nieh country of teh euqertsre. SIc Oopyright ofifce Case postale 56 -HCG 1121eneva 02 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 74 E-mail copyrightiso.ogr Web www.iso.org Pubni dehsil Stiwrezldna 4002:42671OSINEBSENISO17624:2004ISO 26714002:4)E( ISO 4002 r llAithgs reservde iii
23、Contents Page 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Symbols 3 5 Basic principles and conditions of application 3 5.1 Contributions to the sound attenuation 3 5.2 Absorption close to the sound source 4 5.3 Screening effect 4 5.4 Decoupling . 5 5.5 Absorption away from the sou
24、nd source 5 5.6 Further effects of screens 5 6 Types of acoustical screens and special requirements . 6 6.1 Partitioning of large rooms . 6 6.2 Noise control for individual work stations 7 6.3 Protection of individual work stations 7 7 Combined effect of acoustical screens and acoustical claddings .
25、 7 8 Acoustical requirements for planning and verification purposes 8 8.1 Sound absorption 8 8.2 Sound insulation . 8 8.3 In-situ sound attenuation . 8 9 Information for user inquiries and information to be provided by the supplier/manufacturer of a screen 9 9.1 Information to be provided by the use
26、r . 9 9.2 Information to be provided by the supplier/manufacturer . 9 Annex A (informative) Case studies . 10 Bibliography . 14 ENISO17624:2004ISO :42671(4002)E iv ISO 4002 All rithgs reresvde Foreword ISO (the International Organization for Standardization) is a worldwide federation of national sta
27、ndards 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 committee. International or
28、ganizations, 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. International Standards are drafted in accordance with the rules give
29、n in the ISO/IEC Directives, 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 7
30、5 % 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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17624 was prepared by Technical Committee ISO/TC 43, Aco
31、ustics, Subcommittee SC 1, Noise. ENISO17624:2004ISO 26714002:4)E( ISO 4002 r llAithgs reservde v Introduction Besides silencers and enclosures (see ISO 14163 and ISO 15667, respectively), indoor screens are used as secondary means of noise control in workrooms and offices. For workplaces containing
32、 machinery, some information on such elements is given in ISO 11690-2:1996, Annexes E and F . More detailed information can be found in the bibliographic references. ENISO17624:2004blank 4002:42671OSINEANRETNIITOTS LANDNADRA ISO 26714002:4)E( ISO 4002 r llAithgs reservde 1 Acoustics Guidelines for n
33、oise control in offices and workrooms by means of acoustical screens 1S c o p e This International Standard deals with the effectiveness of acoustical screens. It specifies the acoustical and operational requirements to be agreed upon between the supplier or manufacturer and the user of acoustical s
34、creens. This International Standard is applicable to the following types of acoustical screens: a) free-standing acoustical screens for offices, service areas, exhibition areas, and similar rooms; b) acoustical screens integrated in the furniture of such rooms; c) portable and removable acoustical s
35、creens for workshops; d) fixed room partitions with more than of the connecting area open and acoustically untreated. Walls of partial acoustic enclosures and cabins which, together with the room boundary surfaces, also partition a room and provide more than open and acoustically untreated area, are
36、 also treated as acoustical screens. NOTE Guidance on complete acoustic enclosures is given in ISO 15667. This International Standard is not applicable to cabinet walls and similar multi-layer walls whose thickness exceeds , nor to banners and other types of suspended baffles. 2 Normative references
37、 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 amendments) applies. ISO 140-3, Acoustics Measurement of sound insula
38、tion in buildings and of building elements Part 3: Laboratory measurements of airborne sound insulation of building elements ISO 354, Acoustics Measurement of sound absorption in a reverberation room ISO 717-1, Acoustics Rating of sound insulation in buildings and of building elements Part 1: Airbor
39、ne sound insulation ISO 9053, Acoustics Materials for acoustical applications Determination of airflow resistance ISO 10534-1, Acoustics Determination of sound absorption coefficient and impedance in impedance tubes Part 1: Method using standing wave ratio ISO 10534-2, Acoustics Determination of sou
40、nd absorption coefficient and impedance in impedance tubes Part 2: Transfer-function method ISO 11654, Acoustics Sound absorbers for use in buildings Rating of sound absorption ISO 11821:1997, Acoustics Measurement of the in situ sound attenuation of a removable screen 10 % 10 % 0,2 m ENISO17624:200
41、4ISO :42671(4002)E 2 ISO 4002 All rithgs reresvde 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 (acoustical) screen object that is specifically designed to shield one or several specified positions in a given area from the noise of (a) spec
42、ified sound source(s) ISO 11821:1997 3.2 portable or removable (acoustical) screen (acoustical) screen that is designed to be dismantled or relocated without the other environmental conditions being changed NOTE Adapted from ISO 11821:1997. 3.3 insertion sound pressure level difference in-situ sound
43、 attenuation difference, in decibels, between the sound pressure levels, in octave bands or one-third-octave bands, at a specified position without and with the screen installed when one or several specified sound sources are in operation NOTE Adapted from ISO 14163:1998. 3.4 A-weighted insertion so
44、und pressure level difference A-weighted (in-situ) sound attenuation difference, in decibels, between the A-weighted sound pressure levels at a specified position without and with the screen installed, when one or several specified sound sources are in operation NOTE 1 The A-weighting is specified i
45、n IEC 61672-1. NOTE 2 Adapted from ISO 14163:1998. 3.5 insertion loss difference, in decibels, between the levels of the sound power, in octave bands or one-third-octave bands, radiated into the room by the sound source(s) to be shielded without and with the screen installed NOTE By definition, the
46、sound power is to be measured on an enveloping surface enclosing the sound source(s) to be shielded and the space for positioning the screen. It mainly applies to screens placed close to the source. 3.6 sound reduction index transmission loss quantity, in decibels, characterizing the sound energy tr
47、ansmitted through a building element in relation to the sound energy incident upon the element as per ISO 140-3 3.7 free-field screen sound attenuation difference, in decibels, between the sound pressure level of the sound reaching a specified position on the direct path from the sound source to be
48、shielded when the screen is not installed, and the level of the diffracted sound when the screen is installed, calculated from D p D pA D i R D z ENISO17624:2004ISO 26714002:4)E( ISO 4002 r llAithgs reservde 3 (1) where is the path length difference, in metres, between the longer sound propagation path around the least effective diffracting edge of the screen and the direct path; is the wavelength, in metres, of the sound with the frequency in hertz. NOTE 1 The scree
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