Acoustics - Laboratory measurement of sound insulation of building elements - Part 5: Requirements for test facilities and equipment (ISO 10140-5:2010)

This part of ISO 10140 specifies laboratory test facilities and equipment for sound insulation measurements of building elements, such as: - components and materials; - building elements; - technical elements (small building elements); - sound insulation improvement systems. It is applicable to laboratory test facilities with suppressed radiation from flanking elements and structural isolation between source and receiving rooms. This part of ISO 10140 specifies qualification procedures for use when commissioning a new test facility with equipment for sound insulation measurements. It is intended that these procedures be repeated periodically to ensure that there are no issues with the equipment and the test facility.

Akustik - Messung der Schalldämmung von Gebäudeteilen im Prüfstand - Teil 5: Anforderungen an Prüfstände und Prüfeinrichtungen (ISO 10140-5:2010)

Dieses Dokument legt Prüfstände und Prüfeinrichtungen für die Messung der Schalldämmung von Gebäudeteilen fest, zum Beispiel von:
- Bauteilen und Baustoffen;
- Gebäudeteilen;
- technischen Bauteilen (kleine Bauteile);
- Systemen zur Verbesserung der Schalldämmung.
Dieses Dokument gilt für Prüfstände mit unterdrückter Schallabstrahlung von flankierenden Bauteilen und/oder baulicher Trennung zwischen Sende- und Empfangsraum.
Dieser Teil von ISO 10140 legt die Eignungsprüfungen fest, die anzuwenden sind, wenn ein neuer Prüfstand mit Prüfeinrichtungen für Schalldämmungsmessungen in Betrieb genommen wird. Diese Verfahren sind in regelmäßigen Abständen zu wiederholen, um sicherzustellen, dass mit den Prüfeinrichtungen und dem
Prüfstand keine Probleme auftreten.

Acoustique - Détermination de l'isolation acoustique des éléments de construction - Partie 5: Exigences pour installations et équipements d'essai (ISO 10140-5:2010)

L'ISO 10140-5:2010 spécifie les installations et l'appareillage d'essai en laboratoire pour les mesurages de l'isolation acoustique des éléments de construction, tels que les composants et matériaux, les éléments de construction, les éléments techniques (petits éléments de construction) et les systèmes d'amélioration de l'isolation acoustique.

Akustika - Laboratorijsko merjenje zvočne izolirnosti gradbenih elementov - 5. del: Zahteve in oprema za laboratorije (ISO 10140-5:2010)

Ta del ISO 10140 določa laboratorije in opremo za merjenja zvočne izolirnosti gradbenih elementov, kot so: - komponente in materiali; - gradbeni elementi; - tehnični elementi (majhni gradbeni elementi); - sistemi za izboljšavo zvočne izolirnosti. Velja za laboratorije z zadušenim sevanjem iz bočnih elementov in strukturno izoliranost med virov in sobami za sprejem. Ta del ISO 10140 določa kvalifikacijske postopke, ki se uporabljajo pri začetku obratovanja novega laboratorija z opremo za merjenje zvočne izolirnosti. Njegov namen je, da se ti postopki redno ponavljajo, da se zagotovi odprava kakršnih koli težav z opremo ali z laboratorijem.

General Information

Status
Withdrawn
Public Enquiry End Date
14-Feb-2009
Publication Date
15-Nov-2010
Withdrawal Date
31-May-2021
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
27-May-2021
Due Date
19-Jun-2021
Completion Date
01-Jun-2021

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Akustik - Messung der Schalldämmung von Gebäudeteilen im Prüfstand - Teil 5: Anforderungen an Prüfstände und Prüfeinrichtungen (ISO 10140-5:2010)Acoustique - Détermination de l'isolation acoustique des éléments de construction - Partie 5: Exigences pour installations et équipements d'essai (ISO 10140-5:2010)Acoustics - Laboratory measurement of sound insulation of building elements - Part 5: Requirements for test facilities and equipment (ISO 10140-5:2010)91.120.20L]RODFLMDAcoustics in building. Sound insulationICS:Ta slovenski standard je istoveten z:EN ISO 10140-5:2010SIST EN ISO 10140-5:2010en01-december-2010SIST EN ISO 10140-5:2010SLOVENSKI
STANDARDSIST EN ISO 140-3:1997/A1:2005SIST EN ISO 140-3:1997SIST EN ISO 140-8:1998SIST EN ISO 140-6:1999SIST EN ISO 140-16:2006SIST EN ISO 140-1:1998SIST EN 20140-10:1997SIST EN ISO 140-11:2005SIST EN ISO 140-1:1998/A1:20051DGRPHãþD



SIST EN ISO 10140-5:2010



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 10140-5
September 2010 ICS 91.120.20 Supersedes EN 20140-10:1992, EN ISO 140-1:1997, EN ISO 140-11:2005, EN ISO 140-16:2006, EN ISO 140-3:1995, EN ISO 140-6:1998, EN ISO 140-8:1997English Version
Acoustics - Laboratory measurement of sound insulation of building elements - Part 5: Requirements for test facilities and equipment (ISO 10140-5:2010)
Acoustique - Mesurage en laboratoire de l'isolation acoustique des éléments de construction - Partie 5: Exigences relatives aux installations et appareillage d'essai (ISO 10140-5:2010)
Akustik -Messung der Schalldämmung von Gebäudeteilen im Prüfstand - Teil 5: Anforderungen an Prüfstände und Prüfeinrichtungen (ISO 10140-5:2010) This European Standard was approved by CEN on 14 August 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10140-5:2010: ESIST EN ISO 10140-5:2010



EN ISO 10140-5:2010 (E) 2 Contents Page Foreword .3 SIST EN ISO 10140-5:2010



EN ISO 10140-5:2010 (E) 3 Foreword This document (EN ISO 10140-5:2010) has been prepared by Technical Committee ISO/TC 43 "Acoustics" in collaboration with Technical Committee CEN/TC 126 “Acoustic properties of building elements and of buildings” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2011, and conflicting national standards shall be withdrawn at the latest by March 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 140-16:2006, EN 20140-10:1992, EN ISO 140-11:2005, EN ISO 140-1:1997, EN ISO 140-3:1995, EN ISO 140-8:1997, EN ISO 140-6:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10140-5:2010 has been approved by CEN as a EN ISO 10140-5:2010 without any modification.
SIST EN ISO 10140-5:2010



SIST EN ISO 10140-5:2010



Reference numberISO 10140-5:2010(E)© ISO 2010
INTERNATIONAL STANDARD ISO10140-5First edition2010-09-01Acoustics — Laboratory measurement of sound insulation of building elements — Part 5: Requirements for test facilities and equipment Acoustique — Mesurage en laboratoire de l'isolation acoustique des éléments de construction — Partie 5: Exigences relatives aux installations et appareillages d'essai
SIST EN ISO 10140-5:2010



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ii © ISO 2010 – All rights reserved
SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) © ISO 2010 – All rights reserved iii Contents Page Foreword.iv Introduction.v 1 Scope.1 2 Normative references.1 3 Laboratory test facilities for airborne sound insulation measurements.2 4 Laboratory test facilities for impact sound insulation measurements.8 5 Equipment.9 Annex A (normative)
Estimation of the maximum measurable sound reduction index.10 Annex B (normative)
Standard basic elements for measuring the improvement of airborne sound insulation by linings.13 Annex C (normative)
Standard floors for measuring the improvement of impact sound insulation by floor coverings.17 Annex D (normative)
Qualification procedure for loudspeakers and loudspeaker positions.23 Annex E (normative)
Standard tapping machine.27 Annex F (normative)
Alternative impact sound sources.29 Annex G (normative)
Wooden mock-up floor for measuring the improvement of impact sound insulation by floor coverings.34 Bibliography.35
SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) iv © ISO 2010 – All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO 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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10140-5 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building acoustics. This first edition of ISO 10140-5, together with ISO 10140-1, ISO 10140-2, ISO 10140-3 and ISO 10140-4, cancels and replaces ISO 140-1:1997, ISO 140-3:1995, ISO 140-6:1998, ISO 140-8:1997, ISO 140-10:1991, ISO 140-11:2005 and ISO 140-16:2006, which have been technically revised. It also incorporates the Amendments ISO 140-1:1997/Amd.1:2004 and ISO 140-3:1995/Amd.1:2004. ISO 10140 consists of the following parts, under the general title Acoustics — Laboratory measurement of sound insulation of building elements: ⎯ Part 1: Application rules for specific products ⎯ Part 2: Measurement of airborne sound insulation ⎯ Part 3: Measurement of impact sound insulation ⎯ Part 4: Measurement procedures and requirements ⎯ Part 5: Requirements for test facilities and equipment
SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) © ISO 2010 – All rights reserved v Introduction ISO 10140 (all parts) concerns laboratory measurement of the sound insulation of building elements (see Table 1). ISO 10140-1 specifies the application rules for specific elements and products, including specific requirements for preparation, mounting, operating and test conditions. ISO 10140-2 and ISO 10140-3 contain the general procedures for airborne and impact sound insulation measurements, respectively, and refer to ISO 10140-4 and this part of ISO 10140 where appropriate. For elements and products without a specific application rule described in ISO 10140-1, it is possible to apply ISO 10140-2 and ISO 10140-3. ISO 10140-4 contains basic measurement techniques and processes. This part of ISO 10140 contains requirements for test facilities and equipment. For the structure of ISO 10140 (all parts), see Table 1. ISO 10140 (all parts) was created to improve the layout for laboratory measurements, ensure consistency and simplify future changes and additions regarding mounting conditions of test elements in laboratory and field measurements. It is intended for ISO 10140 (all parts) to present a well-written and arranged format for laboratory measurements. It is intended to update ISO 10140-1 with application rules for other products. It is also intended to incorporate ISO 140-18 into ISO 10140 (all parts). SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) vi © ISO 2010 – All rights reserved Table 1 — Structure and contents of ISO 10140 (all parts) Relevant part of ISO 10140 Main purpose, contents and use Detailed content ISO 10140-1 It indicates the appropriate test procedure for elements and products. For certain types of element/product, it can contain additional and more specific instructions about quantities and test element size and about preparation, mounting and operating conditions. Where no specific details are included, the general guidelines are according to ISO 10140-2 and ISO 10140-3. Appropriate references to ISO 10140-2 and ISO 10140-3 and product-related, specific and additional instructions on: ⎯ specific quantities measured; ⎯ size of test element; ⎯ boundary and mounting conditions; ⎯ conditioning, testing and operating conditions; ⎯ additional specifics for test report. ISO 10140-2 It gives a complete procedure for airborne sound insulation measurements according to ISO 10140-4 and ISO 10140-5. For products without specific application rules, it is sufficiently complete and general for the execution of measurements. However, for products with specific application rules, measurements are carried out according to ISO 10140-1, if available.⎯ Definitions of main quantities measured ⎯ General mounting and boundary conditions ⎯ General measurement procedure ⎯ Data processing ⎯ Test report (general points) ISO 10140-3 It gives a complete procedure for impact sound insulation measurements according to ISO 10140-4 and ISO 10140-5. For products without specific application rules, it is sufficiently complete and general for the execution of measurements. However, for products with specific application rules, measurements are carried out according to ISO 10140-1, if available.⎯ Definitions of main quantities measured ⎯ General mounting and boundary conditions ⎯ General measurement procedure ⎯ Data processing ⎯ Test report (general points) ISO 10140-4 It gives all the basic measurement techniques and processes for measurement according to ISO 10140-2 and ISO 10140-3 or facility qualifications according to ISO 10140-5. Much of the content is implemented in software. ⎯ Definitions ⎯ Frequency range ⎯ Microphone positions ⎯ SPL measurements ⎯ Averaging, space and time ⎯ Correction for background noise ⎯ Reverberation time measurements ⎯ Loss factor measurements ⎯ Low-frequency measurements ⎯ Radiated sound power by velocity measurement ISO 10140-5 It specifies all information needed to design, construct and qualify the laboratory facility, its additional accessories and measurement equipment (hardware). Test facilities, design criteria: ⎯ volumes, dimensions; ⎯ flanking transmission; ⎯ laboratory loss factor; ⎯ maximum achievable sound reduction index; ⎯ reverberation time; ⎯ influence of lack of diffusivity in the laboratory. Test openings: ⎯ standard openings for walls and floors; ⎯ other openings (windows, doors, small technical elements); ⎯ filler walls in general. Requirements for equipment: ⎯ loudspeakers, number, positions; ⎯ tapping machine and other impact sources; ⎯ measurement equipment. Reference constructions: ⎯ basic elements for airborne and impact insulation improvement; ⎯ corresponding reference performance curves. SIST EN ISO 10140-5:2010



INTERNATIONAL STANDARD ISO 10140-5:2010(E) © ISO 2010 – All rights reserved 1 Acoustics — Laboratory measurement of sound insulation of building elements — Part 5: Requirements for test facilities and equipment 1 Scope This part of ISO 10140 specifies laboratory test facilities and equipment for sound insulation measurements of building elements, such as: ⎯ components and materials; ⎯ building elements; ⎯ technical elements (small building elements); ⎯ sound insulation improvement systems. It is applicable to laboratory test facilities with suppressed radiation from flanking elements and structural isolation between source and receiving rooms. This part of ISO 10140 specifies qualification procedures for use when commissioning a new test facility with equipment for sound insulation measurements. It is intended that these procedures be repeated periodically to ensure that there are no issues with the equipment and the test facility. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 717-1, Acoustics — Rating of sound insulation in buildings and of building elements — Part 1: Airborne sound insulation ISO 717-2, Acoustics — Rating of sound insulation in buildings and of building elements — Part 2: Impact sound insulation ISO 3382-2, Acoustics — Measurement of room acoustic parameters — Part 2: Reverberation time in ordinary rooms ISO 9052-1:1989, Acoustics — Determination of dynamic stiffness — Part 1: Materials used under floating floors in dwellings ISO 10140-1, Acoustics — Laboratory measurement of sound insulation of building elements — Part 1: Application rules for specific products ISO 10140-2, Acoustics — Laboratory measurement of sound insulation of building elements — Part 2: Measurements of airborne sound insulation SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) 2 © ISO 2010 – All rights reserved ISO 10140-3, Acoustics — Laboratory measurement of sound insulation of building elements — Part 3: Measurements of impact sound insulation ISO 10140-4:2010, Acoustics — Laboratory measurement of sound insulation of building elements — Part 4: Measurement procedures and requirements ISO 18233, Acoustics — Application of new measurement methods in building and room acoustics IEC 60942:2003, Electroacoustics — Sound calibrators IEC 61260, Electroacoustics — Octave-band and fractional-octave-band filters IEC 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications IEC 61672-2, Electroacoustics — Sound level meters — Part 2: Pattern evaluation tests IEC 61672-3, Electroacoustics — Sound level meters — Part 3: Periodic tests 3 Laboratory test facilities for airborne sound insulation measurements 3.1 General The laboratory test facility shall consist of two adjacent reverberant rooms with a test opening between them, in which the test element is inserted. The area of the test opening can vary depending on the type of test element. This part of ISO 10140 defines full-sized test openings, a specific small-sized test opening and alternative reduced-size test openings. For measurement of the improvement of sound reduction index by acoustical linings, these rooms shall be separated by a standard basic element on which the lining under test is installed (see Annex B). 3.2 Test rooms 3.2.1 Volume The volumes of the test rooms shall be at least 50 m3. Volumes and corresponding dimensions of the two test rooms should not be exactly the same. A difference of at least 10 % in room volumes and in the linear dimensions is recommended. Choose the ratios of the room dimensions such that the eigen mode frequencies in the low-frequency bands are spaced as uniformly as possible. When measuring the sound insulation of walls or floors, theoretical calculation as well as experiments have indicated that the test element should cover a total partition wall or ceiling of the test room, i.e. the test opening should extend from wall to wall and from floor to ceiling. In such a case, a volume of 50 m3 to 60
m3 is appropriate in view of the recommended size of the test opening. 3.2.2 Diffusion Large variations of the sound pressure level in the room indicate the presence of dominating strong standing waves. In this case, diffusing elements shall be installed in the rooms. The positioning and number of diffusing elements should be arranged in such a way that the sound reduction index is not influenced when further diffusing elements are installed. NOTE For some kinds of test element, as for elements with one surface significantly more absorbent than the other (see ISO 10140-2), the installation of diffusing elements is mandatory. SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) © ISO 2010 – All rights reserved 3 3.2.3 Reverberation time The reverberation time in the rooms under normal test conditions (with negligible absorption by the test element) should not be excessively long or short. When the reverberation time at frequencies at and above 100 Hz exceeds 2 s or is less than 1 s, check whether the measured sound reduction index depends on the reverberation time. When such a dependence is found, even with diffusers in the rooms, the rooms shall be modified to adjust the reverberation time, T, such that: ()2/312/50TVuu (1) where V is the value of the room volume, in cubic metres; T is the reverberation time, in seconds. Measurement of the reverberation time is given in ISO 10140-4. 3.2.4 Background noise The background noise level in the receiving room shall be sufficiently low to permit measurements of the sound transmitted from the source room, considering the power output in the source room and the sound insulation of the test elements for which the laboratory is intended (see ISO 10140-4:2010, 4.3). 3.2.5 Suppression of flanking transmission In laboratory test facilities designed for measuring the sound reduction index, the sound transmitted by any indirect path should be negligible compared with the sound transmitted through the test element. One approach to achieve this in such facilities is to provide sufficient structural isolation between source and receiving rooms. Another approach is to cover all surfaces of both rooms with linings that reduce the flanking transmission in such a way that the requirements on room volumes and reverberation times are still met. Annex A gives methods for estimating the maximum achievable sound reduction index, maxR′, which is determined by indirect paths. 3.3 Test opening A horizontal and a vertical full-sized test opening, as well as a specific vertical small-sized test opening are defined. Other reduced-size test openings may be applied under certain restrictions. 3.3.1 Full-sized test opening The area of the full-sized test opening shall be approximately 10 m2 for walls, and between 10 m2 and 20 m2 for floors, with the length of the shorter edge being not less than 2,3 m for both walls and floors. 3.3.1.1 General frame specification The measured sound reduction index of a test element can be affected by the connections to the laboratory structure surrounding the element. The mass ratio of the tested structure to the surrounding structure should be taken into consideration. For tests on lightweight structures (m < 150 kg/m2), there are no special requirements to be taken into account. For heavier structures under test, it should be ensured that the loss factor, η, of the test element is not less than that given by Equation (2): min0,30,01fη=+ (2) where f is the test frequency value, in hertz. SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) 4 © ISO 2010 – All rights reserved To check this requirement, use as the test element a brick or block wall having a mass of (400 ± 40) kg/m2 plastered on one side. Measurement of the loss factor is given in ISO 10140-4. 3.3.1.2 Specific requirements on the frame for lightweight twin-leaf partitions With lightweight twin-leaf partitions, the sound reduction index is affected by vibration transmission between the wall leaves via the frame of the test opening (see Figure 1). This is influenced by the mounting conditions in the laboratory test opening and by the material properties and dimensions of the frame(s). Vibration transmission between the coupled structures of the partition itself (e.g. common or coupled studs) is dependent on the specific construction of the partition and is a property of the test element itself. This vibration transmission is not treated in this part of ISO 10140. In order to improve the reproducibility of the sound reduction index between laboratories for walls, guidance is given for the mass per unit area of the frame of the test opening. If there is an acoustic break in the laboratory test opening, the frame on one side of that break should be considered. The mass per unit area of the frame shall be much larger than the mass per unit area of the heaviest leaf of the double partition. The ratio of the mass per unit area of the heaviest leaf of the double partition to that of the frame of the test opening shall be at least 1:6. The minimum thickness of the frame should be 100 mm and the minimum depth should be 200 mm. The frame shall have a density of at least 2 000 kg/m3. The cross-sectional surface mass shall be more than 450 kg/m2. In addition, the frame(s) shall consist of a homogeneous, massive construction, such as dense concrete or masonry. Wood or metal frames connecting the two leaves shall not be used. The surface mass per unit area is calculated from the density, ρ, and the thickness, t, of the elements, as shown in Figure 2, using Equations (3) and (4): LLLmtρ′= (3) where Lm′ is the mass per unit area of the test facility wall, in kilograms per square metre; ρL is the density of the test facility wall, in kilograms per cubic metre; tL is the thickness of the test facility wall, in metres. eeemtρ′= (4) where em′ is the mass per unit area of the element, in kilograms per square metre; ρe is the density of the element, in kilograms per cubic metre; te is the thickness of the element, in metres. SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) © ISO 2010 – All rights reserved 5
Key 1 frame of the test opening Figure 1 — Vibration transmission across the border frame of the test opening
Key 1 test facility wall 2 element under test tL thickness of the test facility wall te thickness of the test element Figure 2 — Determination of the mass per unit area of the elements SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) 6 © ISO 2010 – All rights reserved 3.3.2 Reduced-size test opening The test opening may have a reduced area: a) if the test element area is smaller than the full-sized test opening; b) if special acoustical conditions are met on the test element; c) if the test element is a small technical element. Reduced-size test openings are specified in ISO 10140-1 and ISO 10140-2. 3.3.3 Specific small-sized test opening Specific small-sized test openings are 1 250 mm in width and 1 500 mm in height, with an allowable tolerance on each dimension of ± 50 mm, preferably maintaining the same aspect ratio. The test opening has a maximum depth of 500 mm, with staggered niches with a reflective finish. The larger niche is 60 mm to 65 mm wider at the sides and the top only. The wall with the test opening is constructed from two walls of about equal thickness made of concrete, plastered bricks or similar material with a density of at least 1 800 kg/m3. The gap between the two walls is filled with mineral wool and shall be covered with an airtight reflecting material. This wall may be a filler wall in the full-sized test opening. A vertical and a horizontal section are shown in Figure 3 with a detail of the gap as an example of the test opening within the specifications given. The dimensions of the niches in the horizontal section shall be the same as in the vertical section. The minimum distance between the small-sized test opening and any wall, floor or ceiling of either room shall be 500 mm. The opening should not be symmetrical in the separating wall. SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) © ISO 2010 – All rights reserved 7 Dimensions in millimetres
Key 1 mineral wool 4 mineral wool 2 resilient material (acoustically reflective) 5 reflective finishing 3 double partition wall 6 resilient material (acoustically reflective) Care should be taken to ensure that the resilient material does not add flanking transmission by coupling the two walls. Figure 3 — Example of the construction of the specific small-sized test opening SIST EN ISO 10140-5:2010



ISO 10140-5:2010(E) 8 © ISO 2010 – All rights reserved 4 Laboratory test facilities for impact sound insulation measurements 4.1 General The laboratory test facility consists of two vertically adjacent rooms, the upper one being designated the “source room” and the lower one, the “receiving room”. There are no specific requirements for the shape and size of the source room for impact sound measurements. For measurements of the reduction of transmitted impact sound by floor coverings, these rooms shall be separated by a standard test floor on which the floor covering under test is installed (see Annex C). 4.2 Receiving room 4.2.1 Volume The volume of the receiving room shall be not less than 50 m3. The ratio of the receiving room dimensions shall be chosen so that the eigen mode frequencies in the low-frequency bands are spaced as uniformly as possible. Theoretical calculations as well as experiments have indicated that it may be advisable that the test element cover the total ceiling
...

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Acoustics - Laboratory measurement of sound insulation of building elements - Part 5:
Requirements for test facilities and equipment (ISO/DIS 10140-5:2008)
Akustik - Messung der Schalldämmung von Gebäudeteilen im Prüfstand - Teil 5:
Anforderungen an Prüfstände und Prüfeinrichtungen (ISO/DIS 10140-5:2008)
Acoustique - Détermination de l'isolation acoustique des éléments de construction -
Partie 5: Exigences pour installations et équipements d'essai (ISO/DIS 10140-5:2008)
Ta slovenski standard je istoveten z: prEN ISO 10140-5
ICS:
91.120.20 $NXVWLNDYVWDYEDK=YRþQD Acoustics in building. Sound
L]RODFLMD insulation
oSIST prEN ISO 10140-5:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 10140-5:2009

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oSIST prEN ISO 10140-5:2009
EUROPEAN STANDARD
DRAFT
prEN ISO 10140-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2008
ICS 91.120.20 Will supersede EN ISO 140-6:1998
English Version
Acoustics - Laboratory measurement of sound insulation of
building elements - Part 5: Requirements for test facilities and
equipment (ISO/DIS 10140-5:2008)
Acoustique - Détermination de l'isolation acoustique des Akustik - Messung der Schalldämmung von Gebäudeteilen
éléments de construction - Partie 5: Exigences pour im Prüfstand - Teil 5: Anforderungen an Prüfstände und
installations et équipements d'essai (ISO/DIS 10140- Prüfeinrichtungen (ISO/DIS 10140-5:2008)
5:2008)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 126.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 10140-5:2008: E
worldwide for CEN national Members.

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oSIST prEN ISO 10140-5:2009
prEN ISO 10140-5:2008 (E)
Contents Page
Foreword.3

2

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oSIST prEN ISO 10140-5:2009
prEN ISO 10140-5:2008 (E)
Foreword
This document (prEN ISO 10140-5:2008) has been prepared by Technical Committee ISO/TC 43 "Acoustics"
in collaboration with Technical Committee CEN/TC 126 “Acoustic properties of building elements and of
buildings” the secretariat of which is held by AFNOR.
This document is currently submitted to the parallel Enquiry.
This document will supersede EN ISO 140-6:1998.
Endorsement notice
The text of ISO/DIS 10140-5:2008 has been approved by CEN as a prEN ISO 10140-5:2008 without any
modification.

3

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oSIST prEN ISO 10140-5:2009

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oSIST prEN ISO 10140-5:2009
DRAFT INTERNATIONAL STANDARD ISO/DIS 10140-5
ISO/TC 43/SC 2 Secretariat: DIN
Voting begins on: Voting terminates on:
2008-10-09 2009-03-09
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Acoustics — Laboratory measurement of sound insulation of
building elements —
Part 5:
Requirements for test facilities and equipment
Acoustique — Détermination de l'isolation acoustique des éléments de construction —
Partie 5: Exigences pour installations et équipements d'essai
(Revision of ISO 140-1:1997 and ISO 140-1:1997/Amd 1:2004, ISO 140-10:1991, ISO 140-3:1995 and
ISO 140-3:1995/Amd 1:2004, ISO 140-6:1998 and ISO 140-8:1997)
ICS 91.120.20

ISO/CEN PARALLEL ENQUIRY
The CEN Secretary-General has advised the ISO Secretary-General that this ISO/DIS covers a subject
of interest to European standardization. In accordance with the ISO-lead mode of collaboration as
defined in the Vienna Agreement, consultation on this ISO/DIS has the same effect for CEN
members as would a CEN enquiry on a draft European Standard. Should this draft 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
stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
©
International Organization for Standardization, 2008

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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
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©
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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Laboratory test facilities for airborne sound insulation measurements .2
4 Laboratory test facilities for impact sound insulation measurements.7
5 Equipment .8
Annex A (normative) Estimation of the maximum measurable sound reduction index .10
Annex B (normative) Standard basic elements for the measurement of improvement of airborne
sound insulation by linings.14
Annex C (normative) Standard floors for the measurement of improvement of impact sound
insulation by floor coverings .18
Annex D (normative) Qualification procedure for loudspeakers and loudspeaker positions .24
Annex E (normative) Standard tapping machine.29
Annex F (informative) Alternative impact sound sources .31
Annex G (informative) Wooden mock-up floor for the measurement of improvement of impact
sound insulation by floor coverings .37
Bibliography.38

© ISO 2008 – All rights reserved iii

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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 10140-5 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building
acoustics.
ISO 10140 consists of the following parts, under the general title Acoustics — Laboratory measurement of
sound insulation of building elements:
– Part 1: Test codes
– Part 2: Measurement of airborne sound insulation
– Part 3: Measurement of Impact sound insulation
– Part 4: Measurement procedures and requirements
– Part 5: Requirements for test facilities and equipment

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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
Introduction
ISO 140 is one of the basic series of standards in building acoustics. It currently has several parts describing
laboratory measurements, mounting conditions of test elements in the laboratory, and field measurements. To
improve the layout of Standards for laboratory measurements, to ensure consistency, and to simplify future
changes and additions, ISO/TC 43/SC 2 have created a new series of Standards, ISO 10140. The parts of
ISO 140 that are concerned with laboratory measurement of the acoustic performance of products (ISO 140-1,
-3, -6, -8, -10, -11, and -16) have been re-written and re-arranged with minimal alteration to the contents. The
new Standard, ISO 10140, consists of the parts stated in the Foreword.
ISO 10140-1 describes the test codes for elements and products, including specific requirements for
preparation, mounting, operating and test conditions for elements and products. In the future, Part 1 will be
updated in cooperation with the relevant product Technical Committees. ISO 10140-2 and ISO 10140-3
contain the general procedures for airborne and impact sound insulation measurements respectively and refer
to ISO 10104-4 and ISO 10140-5 where appropriate. For elements and products without a specific test code
described in ISO 10140-1 it is still possible to apply ISO 10140-2 and ISO 10140-3. ISO 10140-4 contains the
basic measurement techniques and processes. ISO 10140-5 contains the requirements on test facilities and
equipment.
In the future it will be possible to insert other measurement techniques and standards into this series, for
example, sound insulation measurement using intensity techniques (ISO 15186) and rainfall noise
measurement (ISO 140-18).
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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
Structure and contents of the new ISO 10140 series:
“Acoustics – Laboratory measurement of sound insulation of building elements”
ISO number Main purpose, contents & use Detailed contents
& subtitle
ISO 10140-1 Indicates the appropriate test procedure for elements and Appropriate references to parts 2 and 3 and product related,
Test codes products. For some types of elements / products, the specific and additional instructions on:
standard may contain additional and more specific - specific quantities to be measured
instructions about quantities and test element size and about - size of test element
preparation, mounting and operating conditions. Where no - boundary and mounting conditions
specific details are included, the general guidelines in parts - conditioning, testing and operating conditions
2 and 3 shall be followed. - additional specifics for test report
ISO 10140-2 Complete procedure for airborne sound insulation - Definitions of main quantities to be measured
Measurement of measurements, referring to parts 4 and 5. It shall be - General mounting & boundary conditions
airborne sound sufficiently complete and general to perform measurements - General measurement procedure
insulation for products without a specific test code, but specifics in part - Data processing
1 shall be applied, if available. - Test report (general points)
ISO 10140-3 Complete procedure for impact sound insulation - Definitions of main quantities to be measured
Measurement of measurements, referring to parts 4 and 5. It shall be - General mounting & boundary conditions
impact sound sufficiently complete and general to perform measurements - General measurement procedure
insulation for products without a specific test code, but specifics in - Data processing
part 1 shall be applied, if available. - Test report (general points)
ISO 10140-4 All needed basic measurement techniques and processes, - Definitions
Measurement for measurements following parts 2 and 3 or facility - Frequency range
procedures and qualifications following part 5. Much of the contents - Microphone positions
requirements implemented in software. - SPL measurements
- Averaging, space and time
- Correction for background noise
- Reverberation time measurements
- Loss factor measurements
- Low frequency measurements
- radiated sound power by velocity measurement
ISO 10140-5 All information needed to design, construct and qualify the Test facilities, design criteria:
Requirements for laboratory facility, its additional accessories and - volumes, dimensions
test facilities and measurement equipment (hardware). - flanking transmission
equipment - laboratory loss factor
- maximum achievable sound reduction index
- reverberation time
- influence of lack of diffusivity in the lab

Test openings:
- standard openings for walls, floors
- other openings (windows, doors, small technical elements)
- filler walls in general

Requirements for equipment:
- loudspeakers, number, positions
- tapping machine and other impact sources
- measurement equipment

Reference constructions:
- basic elements for airborne and impact insulation
improvement
- corresponding reference performance curves


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oSIST prEN ISO 10140-5:2009
DRAFT INTERNATIONAL STANDARD ISO/DIS 10140-5

1 Scope
This document specifies laboratory test facilities and equipment for sound insulation measurements of building
elements, such as:
⎯ components and materials;
⎯ building elements;
⎯ technical elements (small building elements);
⎯ sound insulation improvement systems.
It applies to laboratory test facilities with suppressed radiation from flanking elements and/or structural
insulation between source and receiving rooms.
This part of ISO 10140 specifies qualification procedures that shall be used when commissioning a new test
facility with equipment for sound insulation measurements. These procedures shall be repeated periodically to
ensure that there are no issues with the equipment and the test facility.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO/DIS 10140-1, Acoustics — Laboratory measurement of sound insulation of building elements — Part 1:
Test codes
ISO/DIS 10140-2, Acoustics — Laboratory measurement of sound insulation of building elements — Part 2:
Measurements of airborne sound insulation
ISO/DIS 10140-3, Acoustics — Laboratory measurement of sound insulation of building elements — Part 3:
Measurements of impact sound insulation
ISO/DIS 10140-4:2008, Acoustics — Laboratory measurement of sound insulation of building elements —
Part 4: Measurement procedures and requirements
ISO 717-1, Acoustics — Rating of sound insulation in buildings and of building elements — Part 1: Airborne
sound insulation
ISO 717-2, Acoustics — Rating of sound insulation in buildings and of building elements — Part 2: Impact
sound insulation
ISO 3382-2, Acoustics — Measurement of the reverberation time of rooms with reference to other acoustical
parameters — Part 2: Ordinary rooms
ISO 9052-1, Acoustics — Determination of dynamic stiffness — Part 1: Materials used under floating floors in
dwelling
ISO 15186-1, Acoustics — Measurement of sound insulation in buildings and of building elements using
sound intensity — Part 1: Laboratory measurements
ISO 18233, Acoustics — Application of new measurement methods in building and room acoustics
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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
IEC 60942:2003, Electroacoustics — Sound calibrators
IEC 61260, Electroacoustics — Octave-band and fractional-octave-band filters
IEC 61672-1, Electroacoustics — Sound level meters - Part 1: Specifications
IEC 61672-2, Electroacoustics — Sound level meters - Part 2: Pattern evaluation tests
IEC 61672-3, Electroacoustics — Sound level meters - Part 3: Periodic tests
3 Laboratory test facilities for airborne sound insulation measurements
The laboratory test facility shall consist of two adjacent reverberant rooms with a test opening between them
in which the test element is inserted.
The area of the test opening can vary depending on the type of test element. This standard defines full-size
test openings, a specific small size test opening and alternative reduced size test openings.
For measurement of the improvement of sound reduction index by acoustical linings these rooms shall be
separated by a standard basic element on which the lining under test is installed (see Annex B).
3.1 Test rooms
3.1.1 Volume
3
The volumes of the test rooms shall be at least 50 m . Volumes and corresponding dimensions of the two test
rooms should not be exactly the same. A difference in room volumes and/or in the linear dimensions of at

least 10% is recommended.
Choose the ratios of the room dimensions so that the mode frequencies in the low-frequency bands are
spaced as uniformly as possible.
NOTE When measuring the sound insulation of walls or floors, theoretical calculation as well as experiments have
indicated that the test element should cover a total partition wall or ceiling of the test room, i.e. the test opening should
 3
3
extend from wall to wall and/or from floor to ceiling. In such a case, a volume of 50 m to 60 m is appropriate in view of
the recommended size of the test opening.
3.1.2 Diffusion
Large variations of the sound pressure level in the room indicate the presence of dominating strong standing
waves. In this case it is necessary to install diffusing elements in the rooms. The positioning and number of
diffusing elements should be arranged so that the sound reduction index is not influenced when further
diffusing elements are installed.
NOTE For some kind of test elements the installation of diffusing elements is mandatory, as for elements with one
surface being significantly more absorbent than the other; see ISO/DIS 10140-2.
3.1.3 Reverberation time
The reverberation time in the rooms under normal test conditions (with negligible absorption by the test
element) should not be excessively long or short. When the reverberation time at frequencies at and above
100 Hz exceeds 2 s or is less than 1 s, check whether the measured sound reduction index depends on the
reverberation time. When such a dependence is found, even with diffusers in the rooms, the room shall be
modified to adjust the reverberation time, T, such that
2/ 3
1≤ T≤ 2()V / 50 (1)
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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
where
V is the value of the room volume, in cubic meters;
T is the reverberation time, in seconds.
For measurement of the reverberation time see ISO/DIS 10140-4:2008.

3.1.4 Background noise
The background noise level in the receiving room shall be sufficiently low to permit measurements of the
sound transmitted from the source room, considering the power output in the source room and the sound
insulation of the test elements for which the laboratory is intended (see ISO/DIS 10140-4:2008, 4.3).
3.1.5 Suppression of flanking transmission
In laboratory test facilities for measuring the sound reduction index, the sound transmitted by any indirect path
should be negligible compared with the sound transmitted through the test element. One approach to achieve
this in such facilities is to provide sufficient structural isolation between source and receiving room. Another
approach would be to cover all surfaces of both rooms with linings that reduce the flanking transmission in
such a way that the requirements on room volumes and reverberation times are still met.
Methods for the estimation of the maximum achievable sound reduction index R’ , which is determined by
max
indirect paths are given in Annex A.
3.2 Test opening
A horizontal and a vertical full-size test opening is defined as well as a specific vertical small size test opening.
Other reduced size test openings may be applied under certain restrictions.
3.2.1 Full size test opening
2 2 2
The area of the full-size test opening shall be approximately 10 m for walls, and between 10 m and 20 m for
floors, with the length of the shorter edge not less than 2,3 m for both walls and floors.
3.2.1.1 General frame specification
The measured sound reduction index of a test element can be affected by the connections to the laboratory
structure surrounding the element. The mass ratio of the tested structure to the surrounding structure should
2
be taken into consideration. For tests on lightweight structures (m < 150 kg/m ) there are no special
requirements to be taken into account. For heavier structures under test it should be ensured that the loss
factor, η, of the test element is not less than
0,3
η = 0,01+
(2)
min
f
where
f is the value of test frequency, in Hertz.
2
To check this requirement, use a brick or block wall having a mass of (400 ± 40) kg/m plastered on one side
as the test element. For measurement of the loss factor see ISO/DIS 10140-4:2008.
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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
3.2.1.2 Specific requirements on the frame for lightweight twin leaf partitions
With lightweight twin leaf partitions, the sound reduction index is affected by vibration transmission between
the wall leaves via the frame of the test opening, see Figure 1. This is influenced by the mounting conditions in
the laboratory test opening and by the material properties and dimensions of the frame(s). Vibration
transmission between the coupled structures of the partition itself (e.g. common or coupled studs) is
dependent on the specific construction of the partition and is a property of the test element itself. This vibration
transmission is not treated in this Standard.
In order to improve the reproducibility of the sound reduction index between laboratories for walls, guidance is
given for the mass per unit area of the frame of the test opening. In case there is an acoustic break in the
laboratory test opening, the frame at one side of that break is to be considered. The mass per unit area of the
frame shall be much larger than the mass per unit area of the heaviest leaf of the double partition. The ratio of
the mass per unit area of the heaviest leaf of the double partition to that of the frame of the test opening shall
be at least 1:6. The minimum thickness of the frame should be 100 mm and the minimum depth should be
3
200 mm. The frame shall have a density of at least 2 000 kg/m . The cross-sectional surface mass shall be
2
more than 450 kg/m . In addition, the frame(s) shall consist of a homogeneous, massive construction such as
dense concrete or masonry. Wood or metal frames connecting the two leaves shall not be used.
The surface mass per unit area is calculated from the density, ρ, and the thickness, t, of the elements as
shown in Figure 2 using the equations (3) and (4).
m' =ρ t (3)
L L L
where
m' is the mass per unit area of the test facility wall, in kilograms per square meter;
L
ρ is the density of the test facility wall, in kilograms per cubic meter;
L
t is the thickness of the test facility wall, in meter.
L
m' =ρ t (4)
e e e
where
m' is the mass per unit area of the element, in kilograms per square meter;
e
ρ is the density of the element, in kilograms per cubic meter;
e
t is the thickness of the element, in meter.
e

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oSIST prEN ISO 10140-5:2009
ISO/DIS 10140-5
Key
1 Frame of the test opening
Figure 1 — Vibration transmission across the border frame of the test opening

1 Test facility wall
2 Element under test
t Thickness of the test facility wall
L
t Thickness of the test element
e
Figure 2 — Determination of the mass per unit area of the elements
3.2.2 Reduced size test opening
The test opening may have a reduced area:
⎯ if the test element area is smaller than the full-size test opening;
⎯ i
...

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