ISO INTERNATIONAL STANDARD 17624 First edition 2004-05-15 Acoustics Guidelines for noise control in offices and workrooms by means of acoustical screens AcoustiqueLignes directrices pour la réduction du bruit dans les bureaux et locaux de travail au moyen d'écrans acoustiques Reference number ISO 17624:2004(E) ISO X @ ISO 2004 ISO 17624:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and instailed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software 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 IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. @ISO2004 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, without permission in writing from either ISO at the address below or ISO's 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 + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2004 - All rights reserved ISO 17624:2004(E) Contents Page 1 Scope 2 Normative references 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 sound 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 Combined effect of acoustical screens and acoustical claddings .... 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 user 9 9.2 Information to be provided by the supplier/manufacturer 9 Annex A (informative) Case studies 10 Bibliography 14 ganizationfor Standa ili ISO 17624:2004(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC 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 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 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, Acoustics, Subcommittee SC 1, Noise. @ iso 2004= All rights reserved ISO 17624:2004(E) Introduction Besides silencers and enclosures (see ISO 14163 and ISO 15667, respectively), indoor screens are used as found in the bibliographic references. Canvriaht International Oranization far Sta