EN ISO 717-1:1996

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.ROLUQRVWLAkustik - Bewertung der Schalldämmung in Gebäuden und von Bauteilen - Teil 1: Luftschalldämmung (ISO 717-1:1996)Acoustique - Evaluation de l'isolement acoustique des immeubles et des éléments de construction - Partie 1: Isolement aux bruits aériens (ISO 717-1:1996)Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation (ISO 717-1:1996)91.120.20L]RODFLMDAcoustics in building. Sound insulationICS:Ta slovenski standard je istoveten z:EN ISO 717-1:1996SIST EN ISO 717-1:1997en01-april-1997SIST EN ISO 717-1:1997SLOVENSKI
STANDARD
INTERNATIONAL STANDARD IS0 717-l Second edition 1996-l 2-15 Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation Acoustique - haiuation de i’isoiement acoustique des immeubies et des Gments de construction - Pat-tie I: isoiement aux bruits akriens Reference number IS0 717-1:1996(E) SIST EN ISO 717-1:1997

IS0 717=1:1996(E) Foreword IS0 (the International Organization for Standardization) is a worldwide fed- eration of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmenta! and non- governmental, in liaison with ISO, also take part in the work. lS0 collab- orates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are cir- culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 717-I was prepared by Technical Commitee ISO/TC 43, Acoustics, Subcommittee SC 2, Building acoustics. This second edition of IS0 717-I cancels and replaces IS0 717-l :I 982 and IS0 717-3:1982, which have been technically revised. IS0 717 consists of the following parts, under the general title Acoustics - ements Rating of sound insulation in buildings and of building el- - Par? I: Airborne sound insulation - Part 2: Impact sound insulation Annexes A, B and C of this part of IS0 717 are for information only. 0 IS0 1996 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 the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 717-1:1997

@ IS0 IS0 717-l :1996(E) Methods of measurement of airborne sound insulation of building elements and in buildings have been standardized in IS0 140-3, IS0 140-4, IS0 140-5, IS0 140-9 and IS0 140-10. The purpose of this part of IS0 717 is to standardize a method whereby the frequency-dependent values of airborne sound insulation can be converted into a single number character- izing the acoustical performance. SIST EN ISO 717-1:1997

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INTERNATIONAL STANDARD @ IS0 IS0 717-l :1996(E) Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation 1 Scope This part of IS0 717 a) b) C) defines single-number quantities for airborne sound insulation in buildings and of building el- ements such as walls, floors, doors and windows; takes into consideration the different sound level spectra of various noise sources such as noise sources inside a building and traffic outside a building; and gives rules for determining these quantities from the results of measurements carried out in one- third-octave or octave bands in accordance with IS0 140-3, IS0 140-4, IS0 140-5, IS0 140-9 and IS0 140-10. The single-number quantities in accordance with this part of IS0 717 are intended for rating the airborne sound insulation and for simplifying the formulation of acoustical requirements in building codes. The re- quired numerical values of the single-number quan- tities are specified according to varying needs. The single-number quantities are based on results of measurements in one-third-octave bands or octave bands. For laboratory measurements made in accordance with IS0 140-3, IS0 140-9 and IS0 140-10, single- number quantities should be calculated using one- third-octave bands only. The rating of results of measurements carried out over an enlarged frequency range is dealt with in annex B. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 717. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 717 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Stan- dards. IS0 140-3:1995, Acoustics - Measurement of sound insulation in buildings and of building elements - Part 3: Laboratory measurements of airborne sound insulation of building elements. IS0 140-4:- ‘), Acoustics - Measurement of sound insulation in buildings and of building elements - Part 4: Field measurements of airborne sound insu- la tion between rooms. IS0 1 40-5:-2), Acoustics - Measurement of sound insulation in buildings and of building elements - Part 5: Field measurements of airborne sound insu- lation of faGade elements and fagades. IS0 140-9:1985, Acoustics - Measurement of sound insulation in buildings and of building elements - Part 9: Laboratory measurement of room-to-room air- borne sound insulation of a suspended ceiling with a plenum above it. 1) To be published. (Revision of IS0 140-4:1978) 2) To be published. (Revision of IS0 140-51978) SIST EN ISO 717-1:1997

IS0 717-l : 1996(E) @ IS0 IS0 140-I OA991, Acoustics - Measurement of sound insulation in buildings and of building el- ements - Part IO: Laboratory measurement of air- borne sound insulation of small building elements. 3 Definitions For the purposes of this part of IS0 717, the following definitions apply. 3.1 single-number quantity for airborne sound insulation rating: Value, in decibels, of the reference curve at 500 Hz after shifting it in accordance with the method specified in this part of IS0 717. NOTE 1 Terms and symbols for the single-number quan- tity used depend on the type of measurement. They are listed in table 1 for airborne sound insulation properties of building elements and in table 2 for airborne sound insu- lation in buildings. In general, new single-number quantities are derived in a similar way. 3.2 spectrum adaptation term: Value, in decibels, to be added to the single-number rating (e.g. R,) to take account of the characteristics of particular sound spectra. NOTES 2 Two sound spectra are defined (in one-third-octave bands and in octave bands) in this part of IS0 717. 3 Annex A gives information on the purpose of introducing these two spectrum adaptation terms. Table 1 - Single-number quantities of airborne sound insulation properties of building elements Derived from one-third-octave band values Single-number quantity I Term and symbol Defined in I Weighted sound reduction index, R, 1 Sound reduction index, R I IS0 140-3: 1995 I equation (4) I Weighted suspended-ceiling normalized Suspended-ceiling normalized level dif- IS0 140-9: 1985 level difference, D, C w ference, D, C equation (3) I , , Weighted element-normalized level dif- Element-normalized level difference, IS0 140-IO:1991 ference, D, e w equation (1) D , , n,e Table 2 - Single-number quantities of airborne sound insulation in buildings Derived from one-third-octave or octave-band values Single-number quantity I Term and symbol Defined in Weighted apparent sound reduction index, R’, Apparent sound reduction index, R’ IS0 140-4:- equation (5) Weighted apparent sound reduction index, R’,,, w I Apparent sound reduction index, R’,,, IS0 140-5:- equation (3) Weighted apparent sound reduction index, R’,, s w 1 * Apparent sound reduction index, R’,, s IS0 140-5:- t equation (4) Weighted normalized level difference, D nw Normalized level difference, D, IS0 140-4:- equation (3) Weighted standardized level difference, Standardized level difference, D,, IS0 140-4:- D equation (4) nT,w Weighted standardized level difference, Standardized level difference, IS0 140-5:- D Or Dtr,2m,nT,w equation (7) Is,2m,nT,w Dls,2m,nT Or Dtr.2m nT I 2 SIST EN ISO 717-1:1997

@ IS0 IS0 717-l :1996(E) 4 Procedure for evaluating single- and if measured data are available) a wider frequency number quantities range between 50 Hz and 5 000 Hz. 4.1 General The values obtained in accordance with IS0 140-3, IS0 140-4, IS0 140-5, IS0 140-9 and IS0 140-10 are compared with reference values (see 4.2) at the fre- quencies of measurement within the range 100 Hz to 3 150 Hz for one-third-octave bands and 125 Hz to 2 000 Hz for octave bands. The comparison shall be carried out as specified in 4.4 4.3 Sound spectra Furthermore, two spectrum adaptation terms shall be calculated (see 4.5) based on two typical spectra within the frequency range as quoted above. These two terms may optionally be supplemented by ad- ditional spectrum adaptation terms covering (if need be 4.2 Reference values The set of reference values used for comparison with measurement results shall be as given in table 3. The reference curves are shown in figures 1 and 2. The set of sound spectra in one-third-octave bands and octave bands to calculate the spectrum adap- tation terms shall be as given in table 4 and shown in figures 3 and 4. The spectra are A-weighted and the overall spectrum level is normalized to 0 dB. m u / s j 70 fo > aJ E aJ iii \c aJ LLL 60 56 500 1000 2000 4000 Frequency,Hz Figure 1 - Curve of reference values for airborne sound, one-third-octave bands 3 SIST EN ISO 717-1:1997

IS0 717=1:1996(E) @ IS0 cz! 60 45 40 1 36 30 63 125 250 500 1000 2000 4000 Frequency,Hz Figure 2 - Curve of reference values for airborne sound, octave bands Table 3 - Reference values for airborne sound Frequency Reference values, dB Hz One-third-octave bands Octave bands 100 33 125 36 36 160 39 200 42 250 45 45 315 48 400 51 500 52 52 630 53 800 54 1 000 55 55 1 250 56 1 600 56 2 000 56 56 2 500 56 3 150 56 4 SIST EN ISO 717-1:1997

@ IS0 IS0 717-l :1996(E) % I - ‘-T * 0 G - 10 -20 -30 -40 Key 500 1000 2000 4000 Frequency,Hz --------- Spectrum No.1 to calculate C - Spectrum No.Zto calculate Ct, Figure 3 - Sound level spectra to calculate the spectrum adaptation terms for one-third-octave band measurements 5 SIST EN ISO 717-1:1997

IS0 717-l : 1996(E) @ IS0 g s ‘b * 0 -2 - 10 -20 -30 -40 Key I 1 f I . 2 l l . . l l . I l . # # 1 ‘? I I I ! I I 4 I I I 1 I I I I I I I I 125 250 500 1000 2000 4000 Frequency,Hz --------- Spectrum No. 1 to calculate C - Spectrum No.2 to calculate Ct, Figure 4 - Sound level spectra to calculate the spectrum adaptation terms for octave-band measurements SIST EN ISO 717-1:1997

@ IS0 IS0 717-l : 1996(E) Table 4 - Sound level spectra to calculate the adaptation terms Frequency Sound levels, Lip dB . Hz Spectrum No. 1 to calculate C Spectrum No. 2 to calculate Ctr One-third octave Octave One-third octave Octave 100 - 29 -20 125 -26 -21 -20 -14 160 -23 -18 200 -21 -16 250 -19 -14 -15 -10 315 -17 -14 400 -15 -13 500 -13 -8 -12 -7 630 -12 - 11 800 - 11 -9 1 000 -10 -5 -8 -4 1250 -9 -9 1600 -9 - 10 2000 -9 -4 -11 -6 2500 -9 -13 3150 -9 -15 NOTE - All levels are A-weighted and the overall spectrum level is normalized to 0 dB. 4.4 Method of comparison To evaluate the results of a measurement made in ac- cordance with IS0 140-3, IS0 140-4, IS0 140-5, IS0 140-9 and IS0 140-10 in one-third-octave bands (or octave bands), given to 0,l dB, shift the relevant reference curve in steps of 1 dB towards the meas- ured curve until the sum of unfavourable deviations is as large as possible but not more than 32,0 dB (measurement in 16 one-third-octave bands) or IO,0 dB (measurement in 5 octave bands). An unfavourable deviation at a particular frequency occurs when the result of measurements is less than the reference value. Only the unfavourable deviations shall be taken into account. The value, in decibels, of the reference curve at 500 Hz, after shifting it in accordance with this pro- cedure, is R,, R’,,,,, D, ,,,, or DnT,,,,, etc. (see tables 1 and 2). 1 9 Only use reference values in octave bands for com- parison with results of measurements in octave bands in the field. Cj=XAj-Xw where j is the index for the sound spectra Nos. 1 and 2; X, is the single-number quantity calculated ac- cording to 4.4 from R, R’, D, or D,, values; XAj is calculated from XAji = _ 10 lg~&~~-xi~‘lo dB where i is the index for the one-third-octave bands 100 Hz to 3 150 Hz or the octave bands 125 Hz to 2 000 Hz; Lij are the levels as given in 4.3 at the fre- quency i for the spectrum j; Xi is the sound reduction index Ri, or ap- . . _ . . . - I 4.5 Calculation of spectrum adaptation terms parent sound reductron Index R’i or normalized sound level difference 1Dn,i, or standardized sound level difference D”T,i, at the measuring frequency i given to the nearest 0,l dB. The spectrum adaptation terms, Cj, in decibels, shall be calculated with the sound spectra given in 4.3 from the following equation: 7 SIST EN ISO 717-1:1997

IS0 717-l :1996(E) @ IS0 Calculate the spectrum adaptation term according to 0,l dB and rounded to an integera). It shall be identi- fied according to the spectrum used, as follows: C when calculated with spectrum No. 1 (A- weighted pink noise); Ctr when calculated with spectrum No. 2 (A- weighted urban traffic noise). NOTES 4 The spectra of most of the usual prevailing indoor and outdoor noise sources lie in the range of spectra Nos.1 and 2; the spectrum adaptation terms C and Ctr may therefore be used to characterize the sound insulation with respect to many types of noise. Guidelines for the relevant spectrum adaptation terms are given in annex A. 5 Supplementary calculations of the spectrum adaptation terms may also be carried out for the enlarged frequency range (including 50 Hz + 63 Hz + 80 Hz and/or 4 000 Hz + 5 000 Hz one-third-octave bands or 63 Hz and/or 4 000 Hz octave bands). The relevant terms and spectra are given in annex B. An example of the calculation of the single- number quantity and the adaptation terms is given in an- nex C. 5 Statement of results The appropr
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