1、Designation: E413 10E413 16Classification forRating Sound Insulation1This standard is issued under the fixed designation E413; 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 indic
2、ates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This classification covers methods of calculating single-number acoustical r
3、atings for laboratory and field measurements ofsound attenuation obtained in one-third octave bands.1.2 The name given to the single-number rating is assigned by the test method that invokes this classification.1.3 Test methods that invoke this classification include:1.3.1 Test Method E90The single-
4、number rating is called sound transmission class (STC).1.3.2 Test Method E336Single-number Single number ratings are field sound transmission class (FSTC), noise isolation class(NIC), and normalized noise isolation class (NNIC).(NNIC), apparent sound transmission class (ASTC), and field soundtransmi
5、ssion class (FSTC).1.3.3 Test Method E596The single-number rating is called noise isolation class (NIC).1.3.4 Test Method E1414The single-number rating is called ceiling attenuation class (CAC).1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are includ
6、ed in this standard.2. Referenced Documents2.1 ASTM Standards:2C634 Terminology Relating to Building and Environmental AcousticsE90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and ElementsE336 Test Method for Measurement of Airborne Sound Attenua
7、tion between Rooms in BuildingsE596 Test Method for Laboratory Measurement of Noise Reduction of Sound-Isolating EnclosuresE1332 Classification for Rating Outdoor-Indoor Sound AttenuationE1414 Test Method for Airborne Sound Attenuation Between Rooms Sharing a Common Ceiling Plenum2.2 ISO Standard:3I
8、SO 717 Rating of Sound Insulation for Dwellings3. Terminology3.1 The following terms used in this classification are defined in Terminology C634:airborne sound,field sound transmission class,level,noise isolation class,noise reduction,normalized noise isolation class,one-third octave band,sound insu
9、lation,sound isolation, and1 This classification is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility of Subcommittee E33.03on Sound Transmission.Current edition approved Sept. 1, 2010April 1, 2016. Published October 2010April 2016.
10、 Originally approved in 1970. Last previous edition approved in 20042010 asE413 04.E413 10. DOI: 10.1520/E0413-10.10.1520/E0413-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume informat
11、ion, refer to the standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an
12、 indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to
13、 be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1sound transmission loss.4. Significance and Use4.1 These single-number ratings correlate in a general way with subjective impressions of sound transm
14、ission for speech, radio,television, and similar sources of noise in offices and buildings. This classification method is not appropriate for sound sources withspectra significantly different from those sources listed above. Such sources include machinery, industrial processes, bowling allies,power
15、transformers, musical instruments, many music systems, and transportation noises such as motor vehicles, aircraft andtrains. For these sources, accurate assessment of sound transmission requires a detailed analysis in frequency bands. Asingle-number sound transmission rating for building faade eleme
16、nts is given in Classification E1332.4.2 The single-number ratings obtained can be used to compare the potential sound insulation of partitions or floors tested inlaboratory conditions (STC) or the actual sound isolation between different suites in buildings (NNIC, NIC). The rating for apartition bu
17、ilt and tested in a building may be lower than that obtained for a partition tested in a laboratory because of flankingtransmission or construction errors.NOTE 1A similar rating procedure, described in ISO 717, provides single figure sound insulation ratings with a frequency range that extends from1
18、00 to 3150 Hz with no maximum deficiency specified at individual frequencies. For most partitions, the two ratings differ by only one or two points.5. Procedure5.1 The reference contour is defined by the array of values given in Table 1.5.2 Round the data to which the contour is to be fitted to the
19、nearest integer.NOTE 2The contour in Table 1 has a rating of zero. Other contours may be derived by adding the same integer to all values in the table.5.3 Fit the reference contour to the data by increasing simultaneously all the values in Table 1 in 1-dB increments until someof the data are less th
20、an the shifted reference contour.5.4 At each frequency calculate the difference between the shifted reference value and the data. If a measured data point is lessthan the reference contour this is a deficiency; only deficiencies are counted in the fitting procedure. Continue to increase thereference
21、 contour values to the highest level that will satisfy the following conditions:5.4.1 The sum of the deficiencies is less than or equal to 32 dB; and5.4.2 The maximum deficiency at any one frequency does not exceed 8 dB.5.5 The single-number rating is given by the value of the shifted reference cont
22、our at 500 Hz.6. Presentation of Results6.1 It is recommended that the data be plotted to the scale sizes recommended in Note 3, along with the shifted reference contour(see Figs. X1.1 and X1.2). This type of presentation draws attention to the frequency regions of the data that limit thesingle-numb
23、er rating.NOTE 3Recommended graph scale sizes are 2 mm/dB for the ordinate and 50 mm per 10 to 1 frequency ratio for the logarithmic abscissa. Theordinate scale should start at 0 dB. If larger or smaller scale sizes are unavoidable, the same aspect ratio of 25 dB per 10 to 1 frequency ratio should b
24、eretained.7. Keywords7.1 architectural acoustics; building design; ceiling attenuation class (CAC); field sound transmission class (FSTC); noiseisolation class (NIC); normalized noise isolation class (NNIC); partitions (buildings); sound insulation rating; sound transmissionclass (STC)APPENDIX(Nonma
25、ndatory Information)X1. EXAMPLES OF FITTED CONTOURSX1.1 Figs. X1.1 and X1.2 show examples of transmission loss data fitted to the reference contour. In Fig. X1.1, the STC is 24and the 8-dB limitation in 5.4.2 is not invoked. In Fig. X1.2 the STC is 30 and the 8-dB limitation is invoked at 2500 Hz.TA
26、BLE 1 Reference Sound Insulation Contour for Calculation ofSingle-Number RatingsFrequency, Hz 125 160 200 250 315 400 500 630Value, dB 16 13 10 7 4 1 0 1Frequency, Hz 800 1000 1250 1600 2000 2500 3150 4000Value, dB 2 3 4 4 4 4 4 4E413 162E413 163NOTE 1The deficiencies are shown as bars at the bottom
27、 of the chart.The8-dB limitation is not invoked.E413 164FIG. X1.1 Reference Contour (Solid Line) Fitted to TransmissionLoss Data (Symbols + Line)E413 165NOTE 1The deficiencies are shown as bars at the bottom of the chart.The8-dB limitation is invoked at 2500 Hz.E413 166ASTM International takes no po
28、sition respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibi
29、lity.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to AS
30、TM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address
31、 shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610
32、-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ X1.2 Reference Contour (Solid Line) Fitted To TransmissionLoss Data (Symbols + Line)E413 167
