ASTM_E_1779_-_96a_2004.pdf

Designation:E 1779 96a(Reapproved 2004)Standard Guide forPreparing a Measurement Plan for Conducting OutdoorSound Measurements1This standard is issued under the fixed designation E 1779;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis is one of a series of standards on the measurement and evaluation of community noise.Othersin the series include Guide E 1014 for Measurement of Outdoor A-Weighted Sound Levels,whichcovers manual measurement,using a simple meter,and analysis of the resulting data,and Test MethodE 1503 for Conducting Outdoor Sound Measurements Using a Digital Statistical Analysis System.Also under consideration or in preparation are:a standard guide for the selection of environmentalnoise metrics and criteria,a standard guide for determining the validity and significance of data,anda standard guide for measuring sound received from a nearby discrete fixed sound source.1.Scope1.1 This guide covers the preparation of a formal plan formeasurement of outdoor sound levels.A documented,detailedplan is highly desirable and useful for major environmentalnoise studies requiring measurements at several locations overa long period.This guide is intended primarily for use in suchcases.Many simple measurements can be made withoutextensive prior planning or documentation.It is recommendedthat persons or organizations routinely performing such mea-surements draft and use a brief generic plan based on,but notreferencing,this guide.NOTE1The extent of planning and plan documentation should beconsistent with the budget and needs of the project.In a large measure-ment program it is possible that use of a formal measurement plan couldresult in cost savings greater than the cost of preparing the plan.A formaldocumented plan can be prepared for even the simplest measurement.However,on a small project,the cost of preparation of a formal plan maynot be cost effective.In such cases,plan documentation could be limitedto inclusion in the final report.1.1.1 This guide addresses the following aspects of outdoorsound level measurements:Reporting Requirements4.8Plan Format5Defining the Scope of the Measurement5.1Selecting the Appropriate Survey Class5.1.1Requirements for Unattended Measurements5.2,Annex A2Operator Qualifications5.3,Annex A3Identification of Interferences5.4.1.2,Annex A1Measurement Procedures5.8Procedures for Dealing with Impulsive Sounds,TonalSounds,and Infra-Sound5.8.1.3,5.8.3Analysis and Post-analysis Requirements5.9Requirements for Measurement and Reporting ofSupporting Data5.10Procedures for Mitigating InterferencesAnnex A1Specification of the following:Precision and Accuracy Requirements5.1.2.4,5.6.4Measurement Locations5.4,Annex A4,Appendix X1Measurement Schedule5.5Measurement Durations5.5Amount of Data Required5.5.3Sound Measurement Equipment5.6Calibration Requirements5.6.41.1.2 Test Method E 1503 for Conducting Outdoor SoundMeasurements Using a Digital Statistical Analysis Systemaddresses listed aspects of outdoor sound level measurementsfor situations that are normally encountered.Many otherformal and informal practices also address most of these issues.However,there is sometimes a need to depart from the normalmethods in order to accommodate a special situation or aregulatory requirement.This guide provides options that aretechnically correct for specific situations,and provides theinformation needed for selecting appropriate options.1.1.3 This guide may be used when planning a program forobtaining either a single measurement set of sound level data ormultiple sets of data,as well as related supporting data.1.2 Measurements that may be planned using this guideinclude,but are not limited,to the following:1.2.1 Characterization of the acoustical environment of asite.1This guide is under the jurisdiction ofASTM Committee E33 on EnvironmentalAcoustics and is the direct responsibility of Subcommittee E33.09 on CommunityNoise.Current edition approved April 1,2004.Published May 2004.Originallyapproved in 1996.Last previous edition approved 1996 as E 1779 96a.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.1.2.2 Characterization of the sound emissions of a specificsound source that exhibits a temporal variation in sound output.1.2.3 Measurement of low-frequency sound(infra-sound)isincluded because it is sometimes implicated in driving struc-tural vibration that translates to audible interior sound.1.2.4 Measurement of impulsive sound and sound withsignificant tonal content.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with i