1、Designation:E137406(Reapproved 2011)Standard Guide forOpen Office Acoustics and Applicable ASTM Standards1This standard is issued under the fixed designation E1374;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revi
2、sion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThere are no full height partitions in an open-plan office to block sound transmission betweenadjacent work stations.Instead,partia
3、l height barriers,a sound absorbing ceiling and absorption onvertical surfaces are used to provide sound attenuation between individuals.These,in combinationwith work station layout and appropriate levels of broad band masking sound are used to obtainacceptable degrees of acoustical privacy.1.Scope1
4、.1 This guide discusses the acoustical principles and inter-actions that affect the acoustical environment and acousticalprivacy in the open office.In this context,it describes theapplication and use of the series of ASTM standards that applyto the open office.1.2 The values stated in inch-pound uni
5、ts are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibilit
6、y of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E1110 Classification for Determination of Articulation ClassE1111 Test Method for Measuring the Inter
7、zone Attenuationof Open Office ComponentsE1130 Test Method for Objective Measurement of SpeechPrivacy in Open Plan Spaces Using Articulation IndexE1179 Specification for Sound Sources Used for TestingOpen Office Components and SystemsE1414 Test Method for Airborne Sound Attenuation Be-tween Rooms Sh
8、aring a Common Ceiling PlenumE1573 Test Method for Evaluating Masking Sound in OpenOffices Using A-Weighted and One-Third Octave BandSound Pressure Levels3.Summary of Guide3.1 Acoustical PrivacyThe attenuation of sound betweenneighboring work stations in an open-plan office is typicallymuch less tha
9、n that potentially available between closed-planoffices.Nevertheless,a degree of acoustical privacy can beachieved if component selection and interaction are under-stood.A successful open plan office is the result of carefulcoordination of the several components,ceiling,walltreatments,furniture and
10、furnishings,heating,ventilating andair-conditioning system,and masking sound system.(SeeSection 7.)3.1.1 This guide delineates the role and interaction of theseveral components and the application of the relevant ASTMStandards.4.Significance and Use4.1 This guide is intended for the use of architect
11、s,engineers,office managers,and others interested in designing,specifying,or operating open offices.4.2 It is not intended to be applied to other than officeenvironments,for example,open plan schools.4.3 While this guide attempts to clarify the many interactingvariables that influence office privacy
12、,it is not intended tosupplant the experience and judgment of experts in the field ofacoustics.Competent technical advice should be sought forsuccess in the design of open offices,including comparisons oftest results carried out according to ASTM standards.1This guide is under the jurisdiction of AS
13、TM Committee E33 on Building andEnvironmentalAcoustics and is the direct responsibility of Subcommittee E33.02 onOpen Plan Spaces.Current edition approved Nov.1,2011.Published December 2011.Originallyapproved in 1990.Last previous edition approved in 2006 as E1374 06.DOI:10.1520/E1374-06R11.2For ref
14、erenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Consho
15、hocken,PA 19428-2959.United States1 5.General Open Office Acoustical Considerations5.1 IntroductionAttenuation with DistanceIn almostany enclosed space,there is some reduction of sound level withdistance.In many typical spaces,this decrease of sound levelwith distance is affected by sound reflection
16、s from the ceiling,the walls,and floor.In the open plan office the goal is tomaximize this loss with distance in order to improve acousticalprivacy.This requires a highly absorbent ceiling,some absorp-tion on the floor,and careful treatment of nearby verticalsurfaces.The ideal is to approach the conditions of theoutdoors,where there are no reflecting surfaces.5.2 Attaining acoustical privacy between work stations,open or closed plan,is determined by the degree to which theintruding sounds from a