1、Designation: E1332 10aStandard Classification forRating Outdoor-Indoor Sound Attenuation1This standard is issued under the fixed designation E1332; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、 in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis classification is part of a set of ratings for the sound isolating properties of materials, buildingelements, and structures. It is base
3、d on A-weighted reduction of a transportation noise source. Otherratings include Classification E413 that rates the ability of a partition to reduce speech and othersounds within a limited frequency range, and Classification E989 that provides a rating method forcomparing the impact-insulation prope
4、rties of floor-ceiling assemblies.1. Scope1.1 The purpose of this classification is to provide a methodto calculate single-number ratings that can be used for assesingthe isolation for the outdoor sound provided by a building orcomparing building facade specimens including walls, doors,windows, and
5、combinations thereof, including complete struc-tures. These ratings are designed to correlate with subjectiveimpressions of the ability of building elements to reduce thepenetration of outdoor ground and air transportation noise.2These ratings provide an evaluation and rank ordering of theperformanc
6、e of test specimens based on their effectiveness atcontrolling the sound of a specific outdoor sound spectrumcalled the reference source spectrum.1.2 In addition to the calculation method, this classificationdefines some ratings not defined in other standards. Otherstandards may define additional ra
7、tings based on the method ofthis classification.1.3 The rating does not necessarily relate to the perceivedaesthetic quality of the transmitted sound. Different facadeelements with similar ratings may differ significantly in theproportion of low and high frequency sound that they transmit.It is best
8、 to use specific sound transmission loss values, inconjunction with actual spectra of outdoor and indoor soundlevels, for making final selections of facade elements.1.4 Excluded from the scope of this classification areapplications involving noise spectra differing markedly fromthose described in 4.
9、1. Thus excluded, for example, would becertain industrial noises with high levels at frequencies belowthe 80 Hz one-third octave band, relative to levels at higherfrequencies. However, for any source with a spectrum similarto those in 4.1, this classification provides a more reliableranking of the p
10、erformance of partitions and facade elementsthan do other classifications such as Classification E413.1.5 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.6 This standard does not purport to address all of thesafety concerns, i
11、f any, associated with its use. It is theresponsibility 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:3C634 Terminology Relating to Building and Envi
12、ronmentalAcousticsE90 Test Method for Laboratory Measurement of AirborneSound Transmission Loss of Building Partitions and Ele-mentsE413 Classification for Rating Sound InsulationE966 Guide for Field Measurements of Airborne SoundInsulation of Building Facades and Facade ElementsE989 Classification
13、for Determination of Impact InsulationClass (IIC)2.2 ANSI Standard:S1.4 American National Standard Specification for SoundLevel Meters42.3 ISO Standard:1This classification is under the jurisdiction of ASTM Committee E33 onBuilding and Environmental Acoustics and is the direct responsibility of Subc
14、om-mittee E33.03 on Sound Transmission.Current edition approved May 1, 2010. Published June 2010. Originallyapproved in 1990. Last previous edition approved in 2010 as E133210. DOI:10.1520/E1332-10A.2This classification may be used in conjunction with Test Method E90 or GuideE966.3For referenced AST
15、M 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.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th
16、 Floor, New York, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ISO 532 AcousticsMethod for Calculating LoudnessLevel43. Terminology3.1 The following terms used in this classification havespecific meani
17、ngs that are defined in Terminology C634:airborne sound, decibel, impact insulation class, level reduc-tion, octave band, outdoor-indoor transmission loss, soundinsulation, sound isolation, sound level, sound transmissionloss.3.2 Definitions of Terms Specific to This Standard:3.2.1 apparent outdoor-
18、indoor transmission class, AO-ITC(u), nof a building faade or faade element at aspecified angle u or range of angles - a single-number ratingcalculated in accordance with Classification E1332 usingmeasured values of apparent outdoor-indoor transmission loss.3.2.2 apparent outdoor-indoor transmission
19、 loss, AOITL(u),nof a building faade or faade element, in a specifiedfrequency band at a specified angle u or range of angles thevalue of outdoor-indoor transmission loss obtained on a testfaade element as installed, without flanking tests to identify oreliminate extraneous transmission paths; the A
20、OITL is thelower limiting value of the outdoor-indoor transmission loss ofthe faade element.3.2.3 outdoor-indoor level reduction, OILR(u), nof abuilding faade, faade element, or combination of faadesurfaces enclosing a room, in a specified frequency band at aspecified angle u or range of anglesthe d
21、ifference between thetime-averaged exterior sound pressure level which would bepresent at the faade of the room were the building and itsfaade not present due to a sound source at a specified angle ofincidence u or range of angles and the space-time averagesound pressure level in a room of a buildin
22、g.3.2.4 outdoor-indoor noise isolation class, OINIC(u), nofa building faade, faade element, or combination of faadesurfaces enclosing a room, at a specified angle u or range ofanglesa single-number rating calculated in accordance withClassification E1332 using measured values of outdoor-indoorlevel
23、reduction.3.2.5 outdoor-indoor transmission class, OITC, of a build-ing faade or faade element, na single-number ratingcalculated in accordance with Classification E1332 usingmeasured values of sound transmission loss.4. Significance and Use4.1 This classification provides a single number rating for
24、transmission loss or noise reduction data that have beenmeasured or calculated. This rating is based on the differencebetween the overall A-weighted sound level of the soundspectrum given in Table 1 and the overall A-weighted soundlevel of the spectrum that results from arithmetically subtract-ing t
25、he transmission loss or noise reduction data from thisspectrum. The spectrum shape is an average of three typicalspectra from transportation sources (aircraft takeoff, freeway,and railroad passby). A study showed that this classificationcorrelated well with the A-weighted and loudness reductions(see
26、 ISO 532) calculated for each of the typical spectra for theone-third octave band range of 50 to 5000 Hz. The calculatednumeric value of the rating is based on the sound transmissionloss or noise reduction values for a particular specimen anddepends only on that data and the shape of the reference s
27、ourcespectrum used in the calculation. The values shown in Table 1have an arbitrary reference level. Single-number ratings shouldalways be used with caution. Specimens having the same ratingcan result in different indoor spectra depending on the variationof their transmission loss with frequency. Al
28、so, if the actualspectrum of the outdoor sound is different from that assumed inTable 1, the overallA-weighted outdoor-indoor noise reductionmay be different from the OINIC.4.2 This classification requires sound transmission loss(TL), apparent outdoor-indoor transmission lost (AOITL(u) ,or outdoor-i
29、ndoor noise reduction measurements (OILR(u) inone-third octave bands from 80 to 4000 Hz. Due to accuracylimitations given in Test Method E90 and Guide E966,measurements below the 100 Hz one-third octave band are notusually reported. Studies have shown that data in the 80 Hzone-third octave band are
30、necessary to obtain acceptablecorrelations for transportation sound sources. For the purposesof this classification, measurements of sound transmission lossin the 80 Hz one-third octave band from qualified laboratoriesare deemed to be of acceptable accuracy.4.3 Users of this classification should re
31、cognize that lowfrequency measurements of sound transmission loss may beaffected by the test specimen size or the specimen edgerestraints, or both, particularly for small modular specimenssuch as doors or windows. Consequently, the outdoor-indoortransmission class (OITC) may also be affected by thes
32、efactors, resulting in some uncertainty of the field performanceof assemblies bearing a rating number using this classification,but to what extent is unknown.5. Basis of Classification5.1 The rating of a test specimen is calculated usingthird-octave data such as transmission loss or outdoor-indoorno
33、ise reduction in the range 80 to 4000 Hz. This would usuallybe measured in accordance with Test Method E90 or GuideE966, but might be estimated analitically. These data are thenused to determine the A-weighted sound level reduction of theTABLE 1 Reference Source SpectrumOne-third Octave BandCenter F
34、requency,HzSound Level, dB80 103100 102125 101160 98200 97250 95315 94400 93500 93630 91800 901000 891250 891600 882000 882500 873150 854000 84E1332 10a2specimen for the reference source spectrum specified in Table1. The rating is then equal to the calculated A-weighted soundreduction, rounded to th
35、e nearest decibel.5.2 The rating is calculated from the followingand roundedto the an integer value:Rating 5 100.13 2 10 * log(f10Lf2 Df1 Af!/10!(1)where:Lf= reference source spectrum,Af= A-weighting adjustment, andDf= Data at each one-third-octave frequency band, such assound transmission loss or o
36、utdoor-indoor noise re-duction.5.3 Table 2 shows a general worksheet for use in calculatingthe rating, and Table 3 shows an example worksheet forcalculating OITC. The figures in Column 3 for theA-weightingadjustments are taken from ANSI S1.4. Other ratings may becomputed using the same worksheet sub
37、situting the appropriatedata for the rating instead of the sound transmission loss.6. Presentation of Results6.1 It is recommended that ratings calculated in accordancewith this classification always be presented together with agraph of the data used for the calculation.7. Precision7.1 A study5of fo
38、rty two sound attenuating gypsum boardwall assemblies compared the calculated A-weighted soundreduction of each assembly, for three sound spectra represent-ing railroad, freeway, and aircraft noise sources over theone-third-octave band center frequency range of 50 to 4000Hz, to the calculated OITC.
39、The study gave the followingstatistical data:Source Slope, dB Intercept, dB CorrelationStandardDeviation,dBRailroad 0.977 2.4 0.990 1.2Freeway 1.088 2.5 0.981 1.6Aircraft 1.099 2.8 0.961 2.48. Keywords8.1 A-weighting; aircraft; buildings; classification; facade;freeway; indoor; insulation; isolation
40、; loudness; noise;outdoor-indoor noise isolation (OINIC(u); outdoor-indoortransmission class (OITC); outdoor; railroad; sound; traffic;transmission; transportation5Walker, K. W., “Single Number Ratings for Sound Transmission Loss,” Soundand Vibration, Vol. 22, July 1988.TABLE 2 Worksheet for Calcula
41、ting Outdoor-Indoor RatingsColumn 1 Column 2 Column 3 Column 4 Column 6BandCenterFrequency,HzReferenceSoundSpectrum,dB (Lf)A-weightingCorrection,dB (Af)Column 2+Column 3Column 4Column 580 103 22.5 80.5100 102 19.1 82.9125 101 16.1 84.9160 98 13.4 84.6200 97 10.9 86.1250 95 8.6 86.4315 94 6.6 87.4400
42、 93 4.8 88.2500 93 3.2 89.8630 91 1.9 89.1800 90 0.8 89.21000 89 0 89.01250 89 0.6 89.61600 88 1.0 89.02000 88 1.2 89.22500 87 1.3 88.33150 85 1.2 86.24000 84 1.0 85.0Total Column 4 (dBA) = 10 log ( 10(Column 4f / 10)f= 100.13 dBTotal Column 6 (dBA) = 10 log ( 10(Column 6f / 10)fRating = 100.13 (tot
43、al Column 6)where:f = each one-third-octave frequency band.TABLE 3 Example Worksheet Calculating OITC SpecificallyColumn 1 Column 2 Column 3 Column 4 Column 5 Column 6BandCenterFrequency,HzReferenceSoundSpectrum,dBA-weightingCorrection,dBColumn 2+Column 3SpecimenTL,dBColumn 4Column 580 103 22.5 80.5
44、 26 54.5100 102 19.1 82.9 26 56.9125 101 16.1 84.9 29 55.9160 98 13.4 84.6 29 55.6200 97 10.9 86.1 31 55.1250 95 8.6 86.4 32 54.4315 94 6.6 87.4 32 55.4400 93 4.8 88.2 30 58.2500 93 3.2 89.8 32 57.8630 91 1.9 89.1 36 53.1800 90 0.8 89.2 40 49.21000 89 0 89.0 44 45.01250 89 0.6 89.6 46 43.61600 88 1.
45、0 89.0 48 41.02000 88 1.2 89.2 49 40.22500 87 1.3 88.3 47 41.33150 85 1.2 86.2 46 40.24000 84 1.0 85.0 50 35.0Total Column 4 (dBA) = 10 log ( 10(Column 4f / 10)f= 100.13 dBTotal Column 6 (dBA) = 10 log ( 10(Column 6f / 10)fOITC = 100.13 (total Column 6)= 100.13 66.15=34E1332 10a3ASTM International t
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