ISO/DIS 140-16
(Main)Acoustics -- Measurement of sound insulation in buildings and of building elements
Acoustics -- Measurement of sound insulation in buildings and of building elements
Acoustique -- Mesurage de l'isolation acoustique des immeubles et des éléments de construction
General Information
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Standards Content (sample)
DRAFT INTERNATIONAL STANDARD ISO/DIS 140-16
ISO/TC 43/SC 2 Secretariat: DIN
Voting begins on: Voting terminates on:
2004-06-03 2004-11-03
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Acoustics — Measurement of sound insulation in buildings andof building elements —
Part 16:
Laboratory measurement of the sound reduction index
improvement by additional lining
Acoustique — Mesurage de l'isolation acoustique des immeubles et des éléments de construction —
Partie 16: Mesurage en laboratoire de l'amélioration de l'indice de réduction acoustique par un revêtement
complémentaireICS 91.120.20
ISO/CEN PARALLEL ENQUIRY
This draft International Standard is a draft standard developed within the European Committee for
Standardization (CEN) and processed under the CEN-lead mode of collaboration as defined in the
Vienna Agreement. The document has been transmitted by CEN to ISO for circulation for ISO member
body voting in parallel with CEN enquiry. Comments received from ISO member bodies, including those
from non-CEN members, will be considered by the appropriate CEN technical body. Should this DIS be
accepted, a final draft, established on the basis of comments received, will be submitted to a parallel two-
month FDIS vote in ISO and formal vote in CEN.In accordance with the provisions of Council Resolution 15/1993 this document is circulated in
the English language only.Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué
en version anglaise seulement.To expedite distribution, this document is circulated as received from the committee secretariat.
ISO Central Secretariat work of editing and text composition will be undertaken at publication
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secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.© International Organization for Standardization, 2004
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ISO/DIS 140-16
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prEN ISO 140-16:2003 (E)
Contents Page
Foreword..............................................................................................................................................................3
Introduction.........................................................................................................................................................4
1 Scope......................................................................................................................................................5
2 Normative references............................................................................................................................5
3 Terms and definitions ...........................................................................................................................5
4 Test arrangement...................................................................................................................................7
4.1 Test facilities..........................................................................................................................................7
4.2 Mounting of the specimens ..................................................................................................................7
4.3 Basic elements.......................................................................................................................................7
4.3.1 General....................................................................................................................................................7
4.3.2 Basic wall with low coincidence frequency ("heavy basic wall").....................................................7
4.3.3 Basic floor with low coincidence frequency ("heavy basic floor") ..................................................7
4.3.4 Basic wall with medium coincidence frequency ("lightweight basic wall") ....................................7
5 Test procedure.......................................................................................................................................8
6 Evaluation of results .............................................................................................................................8
7 Precision.................................................................................................................................................8
8 Expression of results ............................................................................................................................8
9 Test report..............................................................................................................................................9
Annex A (normative) Weighting procedure................................................................................................... 10
A.1 General................................................................................................................................................. 10
A.2 Procedure............................................................................................................................................ 10
Annex B (normative) Sound reduction indices of the reference basic elements...................................... 11
B.1 General................................................................................................................................................. 11
B.2 Basic wall with low coincidence frequency ..................................................................................... 11
B.3 Basic floor with low coincidence frequency.................................................................................... 12
B.4 Basic wall with medium coincidence frequency ............................................................................. 14
Bibliography..................................................................................................................................................... 16
DRAFT 2004---------------------- Page: 3 ----------------------
prEN ISO 140-16:2003 (E)
Foreword
This document prEN ISO 140-16:2003 has been prepared by Technical Committee CEN/TC 126 “Acoustic
properties of building products and of buildings”, the secretariat of which is held by AFNOR, in collaboration
with Technical Committee ISO/TC 43 “Acoustics”.This document is currently submitted to the parallel Enquiry.
ISO 140 consists of the following parts, under the general title Acoustics — Measurement of sound insulation
in buildings and of building elements:— Part 1: Requirements for laboratory test facilities with suppressed flanking transmission;
— Part 2: Determination, verification and application of precision data;— Part 3: Laboratory measurements of airborne sound insulation of building elements;
— Part 4: Field measurements of airborne sound insulation between rooms;— Part 5: Field measurements of airborne sound insulation of façade elements and façades;
— Part 6: Laboratory measurements of impact sound insulation of floors;— Part 7: Field measurements of impact sound insulation of floors;
— Part 8: Laboratory measurements of the reduction of transmitted impact noise by floor coverings on a
solid standard floor;— Part 9: Laboratory measurements of room-to-room airborne sound insulation of a suspended ceiling with
a plenum above it;— Part 10: Laboratory measurement of airborne sound insulation of small building elements;
— Part 11: Measurement of impact sound improvement of light-weight floors;— Part 12: Laboratory measurement of room-to-room airborne and impact sound insulation of an access
floor;— Part 13: Guidelines;
— Part 14: Additional requirements and guidelines for sound insulation measurements according to ISO
140-4 and ISO 140-7 - Special situations in the field,— Part 16: Laboratory measurement of the sound reduction improvement by acoustical linings;
— Part 17: Evaluation of the total loss factor;— Part 18: Laboratory measurement of sound generated by rainfall on building elements.
DRAFT 2004---------------------- Page: 4 ----------------------
prEN ISO 140-16:2003 (E)
Introduction
There is a strong need to separately characterise the sound reduction effect of walls or floors and acoustic
linings. On the one hand different industries are involved. On the other hand the European calculation model
for the acoustic performance of buildings from the performance of elements distinguishes the sound reduction
index of a wall (or floor) and the improvement of the sound reduction index by an additional lining. The
laboratory measurement of this sound reduction improvement is the subject of this standard.
Characterising a lining alone requires that its acoustic performance is independent from the basic structure to
which it is fixed. This is fulfilled when the mass per unit area of the basic structure is much larger than the
surface mass of the lining, when the coincidence frequency of the basic structure is below the measured
frequency range and the structural coupling between the lining and the basic structure is small. If the actual
situation differs from these conditions, the effect of the lining is, at least to some extent, dependent on the
properties of the basic structure. The independent characterisation of the acoustic performance of a lining thus
requires very heavy massive elements, while a lot of practical applications will involve various lightweight
elements. As a practical compromise, different steps of testing are provided:• In any case, the lining is to be applied to either a heavy massive wall of about 350 kg/m² with its
coincidence frequency around 125 Hz or to the standard concrete floor according to EN ISO 140-8,
depending on the use of the lining. The measured improvement by the lining is given as a frequency
spectrum and as a single number improvement value according Annexes A and B. Being based on mean
basic element characteristics, the results are largely independent of the particular features of the test
facility and the basic element used and thus characterise the lining in the most general way.
• If the performance of a lining on a generalized lightweight solid wall is of interest, a standard lightweight
basic wall of about 70 kg/m² and coincidence around 500 Hz has to be used. The results are to be given
as a frequency spectrum and as a single number improvement value according Annexes A and B. The
central position of the coincidence frequency may strongly influence the improvement by the lining.
Therefore the results are not likely to be transferable to other basic constructions. But using the weighting
procedure in Annexes A and B, the influences of the particular test facility and basic construction are
minimized, thus making the results comparable between different laboratories.• In order to specify the effect of linings in specific situations, other basic structures can be used in addition
to those specified for the general characterisation of the product. As no mean properties of the basic
element are available in this case, single number results can only be given in terms of the direct
difference between the weighted sound reduction indices with and without lining (subsequently called
'direct difference of the weighted sound reduction indices'). These improvement values include the
particular features of the laboratory and the basic element, thus allowing a comparison of different linings
under these particular conditions.Flexible lightweight basic elements and elements with thickness resonances within the measured frequency
range are outside the scope of this standard as their influence is not predictable.
For standardisation reasons and comparability, all measurements and evaluations are normatively done in
third octave bands. Additional octave band results can optionally be deduced from the third octave band
results.The sound reduction improvement of a lining may be different for direct and flanking sound transmission as
well as for airborne and impact sound excitation. The method described in this standard yields the sound
reduction improvement for direct airborne sound transmission.DRAFT 2004
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prEN ISO 140-16:2003 (E)
1 Scope
This draft standard is a complement to EN ISO 140-3 and specifies the laboratory measurement of the
improvement of the sound reduction index of a wall or ceiling, when covered by an additional acoustical lining.
Dependent on the application of the lining, the tests are carried out on a massive heavyweight wall or floor
with its coincidence frequency near 125 Hz and without any abnormalities concerning its airborne sound
transmission (like thickness resonances). The results, including the single number improvement values, can
be used to compare and predict the acoustic performance of additional linings, when combined with walls or
ceilings meeting the above mentioned conditions of low coincidence frequency and absence of abnormalities
and having a mass per unit area at least ten times larger than that of the lining.
As additional linings are often applied to more lightweight homogeneous massive walls, another basic wall is
defined with a given coincidence frequency around 500 Hz. As a strong interaction of lining and wall is
expected in this case, the results, including the single number improvement values, are limited to this type of
basic walland may thus be mainly used to compare and estimate the acoustic performance of linings under
similar conditions.If individual, non-standardised basic elements are used, the only way to state a single number result is to
calculate the direct difference of the weighted sound reduction indices of the basic element with and without
lining. This value depends on the features of the test facility and of the basic element and thus mainly allows a
comparison of different linings under the same measuring conditions.This draft standard does not deal with the sound reduction improvement by linings on flexible lightweight
structures such as timber frame floors or double leaf gypsum board walls.2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
...
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