EN ISO 140-8:1997

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Akustik - Messung der Schalldämmung in Gebäuden und von Bauteilen - Teil 8: Messung der Trittschallminderung durch eine Deckenauflage auf einer massiven Bezugsdecke in Prüfständen (ISO 140-8:1997)Acoustique - Mesurage de l'isolement acoustique des immeubles et des éléments de construction - Partie 8: Mesurages en laboratoire de la réduction de la transmission du bruit de choc par les revetements de sol sur un plancher lourd normalisé (ISO 140-8:1997)Acoustics - Measurement of sound insulation in buildings and of building elements - Part 8: Laboratory measurements of the reduction of transmitted impact noise by floor coverings on a heavyweight standard floor (ISO 140-8:1997)91.120.20L]RODFLMDAcoustics in building. Sound insulation91.060.30Stropi. Tla. StopniceCeilings. Floors. Stairs17.140.01Acoustic measurements and noise abatement in generalICS:Ta slovenski standard je istoveten z:EN ISO 140-8:1997SIST EN ISO 140-8:1998en01-avgust-1998SIST EN ISO 140-8:1998SLOVENSKI
STANDARD



SIST EN ISO 140-8:1998



SIST EN ISO 140-8:1998



SIST EN ISO 140-8:1998



SIST EN ISO 140-8:1998



SIST EN ISO 140-8:1998



AReference numberISO 140-8:1997(E)INTERNATIONALSTANDARDISO140-8Second edition1997-10-15Acoustics — Measurement of soundinsulation in buildings and of buildingelements —Part 8:Laboratory measurements of the reduction oftransmitted impact noise by floor coverings ona heavyweight standard floorAcoustique — Mesurage de l'isolement acoustique des immeubles et deséléments de construction —Partie 8: Mesurages en laboratoire de la réduction de la transmission dubruit de choc par les revêtements de sol sur un plancher lourd normaliséSIST EN ISO 140-8:1998



ISO 140-8:1997(E)©
ISO 1997All rights reserved. Unless otherwise specified, no part of this publication may be reproducedor utilized in any form or by any means, electronic or mechanical, including photocopying andmicrofilm, without permission in writing from the publisher.International Organization for StandardizationCase postale 56 · CH-1211 Genève 20 · SwitzerlandInternetcentral@iso.chX.400c=ch; a=400net; p=iso; o=isocs; s=centralPrinted in SwitzerlandiiContents1
Scope.12
Normative references.13
Definitions.24
Equipment.35
Test arrangement.35.1
General arrangement.35.2
Details of test arrangement.35.2.1
Source room.35.2.2
Receiving room.45.2.3
Test floor.45.2.4
Condition of floor surface.45.3
Preparation and installation of test specimen.45.3.1
Classification.45.3.2
Installation.45.3.3
Size and number of specimen.55.4
Influence of temperature and humidity.56
Test procedure and evaluation.56.1
Generation of sound field.56.2
Measurement of impact sound pressure level.56.2.1
Microphone positions.56.2.2
Averaging time.66.3
Frequency range of measurements.6SIST EN ISO 140-8:1998



© ISOISO 140-8:1997(E)iii6.4
Measurement of reverberation time and evaluation of the equivalent sound absorption area.66.5
Correction for background noise.76.6
Position of the tapping machine.76.6.1
Adjustment of the tapping machine.76.6.2
Materials of category I.76.6.3
Materials of category II and III.77
Precision.88
Expression of results.89
Test report.9AnnexesA
Requirements for the tapping machine.10B
Form for the expression of results.12C
Bibliography.14SIST EN ISO 140-8:1998



ISO 140-8:1997(E)© ISOivForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees. Each member body interested in a subject for which a technical committee has been established hasthe right to be represented on that committee. International organizations, governmental and non-governmental, inliaison with ISO, also take part in the work. ISO collaborates closely with the International ElectrotechnicalCommission (IEC) on all matters of electrotechnical standardization.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.International Standard ISO 140-8 was prepared by Technical Committee ISO/TC 43, Acoustics, SubcommitteeSC 2, Building acoustics.This second edition cancels and replaces the first edition (ISO 140-8:1978), which has been technically revised.ISO 140 consists of the following parts, under the general title Acoustics — Measurement of sound insulation inbuildings and of building elements:—Part 1: Requirements of 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 facade elements and facades—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 aheavyweight standard floor—Part 9: Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with aplenum above it—Part 10: Laboratory measurement of airborne sound insulation of small building elements—Part 12: Laboratory measurement of room-to-room airborne and impact sound insulation of an access floorAnnex A forms an integral part of this part of ISO 140. Annexes B and C are for information only.SIST EN ISO 140-8:1998



INTERNATIONAL STANDARD
© ISOISO 140-8:1997(E)1Acoustics — Measurement of sound insulation in buildings and ofbuilding elements —Part 8:Laboratory measurements of the reduction of transmitted impact noiseby floor coverings on a heavyweight standard floor1 ScopeThis part of ISO 140 specifies a method for measuring the acoustic properties of floor coverings from the view-pointof reducing impact noise transmission. The purpose of this part of ISO 140 is to establish a method for determiningthe noise reducing value of a floor covering under standard test conditions. The test is limited to the specification ofprocedures for the physical measurement of sound originating from an artificial source (standard tapping machine)under laboratory conditions and is not directly related to the subjective significance of the results.This part of ISO 140 is applicable to all floor coverings, whether single or multi-layered, as installed on a standardfloor. In the case of multi-layered coverings, they may be factory-assembled or assembled at the test site. The testmethod applies only to laboratory measurements. It does not contain any provision that permits an assessment ofthe effectiveness of a floor covering in situ.2 Normative reference(s)The following standards contain provisions which, through reference in this text, constitute provisions of this part ofISO 140. At the time of publication, the editions indicated were valid. All standards are subject to revision, andparties to agreements based on this part of ISO 140 are encouraged to investigate the possibility of applying themost recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently validInternational Standards.ISO 140-1:1997, Acoustics — Measurement of sound insulation in buildings and of building elements — Part 1:Requirements for laboratory test facilities with suppressed flanking transmission.ISO 140-2:1991, Acoustics — Measurement of sound insulation in buildings and of building elements — Part 2:Determination, verification and application of precision data.ISO 140-6:— 1), Acoustics — Measurement of sound insulation in buildings and of building elements — Part 6:Laboratory measurements of impact sound insulation of floors.ISO 140-7:— 2) Acoustics — Measurement of sound insulation in buildings and of building elements — Part 7: Fieldmeasurements of impact sound insulation of floors.ISO 354:1985, Acoustics — Measurement of sound absorption in a reverberation room.ISO 717-2:1996, Acoustics — Rating of sound insulation in buildings and of building elements —Part 2: Impactsound insulation.
1)
To be published.
(Revision of ISO 140-6:1978)2)
To be published.
(Revision of ISO 140-7:1978)SIST EN ISO 140-8:1998



ISO 140-8:1997(E)© ISO2IEC 651:1979, Sound level meters.IEC 804:1985, Integrating-averaging sound level meters.IEC 942:1988, Sound calibrators.IEC 1260:1995, Electroacoustics — Octave-band and fractional-octave-band filters.3 DefinitionsFor the purposes of this part of ISO 140, the following definitions apply.3.1 average sound pressure level in a room, L: Ten times the common logarithm of the ratio of the space andtime average of the sound pressure squared to the square of the reference sound pressure, the space averagebeing taken over the entire room with the exception of those parts where the direct radiation of a sound source orthe near field of the boundaries (wall, etc.) is of significant influence; it is expressed in decibels.If a continuously moving microphone is used, L is determined by()LTpttTp=ò101lgddBm2002m.(1)wherep is the sound pressure, in pascals;p0is the reference sound pressure and is equal to 20 mPa;Tmis the integration time, in seconds.If fixed microphone positions are used, L is determined byLpppnpn=+++10lgdB1222202.(2)where p1, p2,., pn are the r.m.s. sound pressures at n different positions in the room.In practice, usually the sound pressure levels Lj are measured. In this case L is determined byLnLjjn=åæèççöø÷÷=1010101lgdB1/.(3)where Lj is the sound pressure level L1 to Ln at n different positions in the room.3.2 impact sound pressure level, Li: The average sound pressure level in a one-third-octave band in the receivingroom when the floor under test is excited by the standardized impact sound source; it is expressed in decibels.SIST EN ISO 140-8:1998



© ISOISO 140-8:1997(E)33.3 normalized impact sound pressure level, Ln: The impact sound pressure level Li increased by a correctionterm which is given in decibels, being ten times the common logarithm of the ratio between the measured equivalentabsorption area A of the receiving room and the reference equivalent absorption area A0; it is expressed in decibels.LLAAni010lgdB=+.(4)with A0 = 10 m2.3.4 reduction of impact sound pressure level ; improvement of impact sound insulation, DL: For a given one-third-octave band, the reduction in normalized impact sound pressure level resulting from installation of the test floorcovering; it is expressed in decibels.DLLLnn=-0.(5)whereLn0is the normalized impact sound pressure level of the heavyweight standard floor without floor covering;Lnis the normalized impact sound pressure level of the heavyweight standard floor with the floor covering.NOTE — If the receiving room absorption is unchanged during the test, it is assumed that the reduction in impact soundpressure level is equivalent to the reduction in normalized impact sound pressure level.4 EquipmentThe equipment shall comply with the requirements of clause 6.The tapping machine shall meet the requirements given in annex A.The accuracy of the sound level measurement equipment shall comply with the requirements of accuracy classes 0or 1 defined in IEC 651 and IEC 804. The complete measuring system including the microphone shall be adjustedbefore each measurement using a sound calibrator which complies with the requirements of accuracy class 1defined in IEC 942. For sound level meters calibrated for measurements in sound fields of progressive plane wavescorrections for the diffuse sound field shall be applied.The filters shall comply with the requirements given in IEC 1260.The reverberation time measurement equipment shall comply with the requirements given in ISO 354.NOTE — For pattern evaluation (type testing) and regular verification tests, recommended procedures for sound level metersare given in OIML R58 [1] and OIML R88 [2].5 Test arrangement5.1 General arrangementTwo vertically adjacent rooms are used, the upper one being designated the "source room" and the lower one the"receiving room". They are separated by a standard floor on which the floor covering under test is installed. Theairborne sound insulation between source room and receiving room shall be such that the level of airborne soundtransmission from source room to receiving room will be at least 10 dB below the level of transmitted impact soundin each frequency band, see ISO 140-1.5.2 Details of test arrangement5.2.1 Source roomThere are no specific requirements for the size and shape of the source room.SIST EN ISO 140-8:1998



ISO 140-8:1997(E)© ISO45.2.2 Receiving roomThe receiving room shall comply with the requirements of ISO 140-1.5.2.3 Test floorThe floor on which the test coverings are to be installed shall consist of a reinforced concrete slab of thickness()1202040-+mm — preferably 140 mm for the construction of new laboratories. It should be homogeneous and ofuniform thickness. The surface area, viewed from the receiving room, shall be at least 10 m2. On the source side,the permissible test area for installation of floor coverings of category I (see 5.3.3) will be the region at least 0,5 mfrom the edges of the floor slab.5.2.4 Condition of floor surfaceIt shall be ensured that the surface of the test floor is flat, to ± 1 mm in a horizontal distance of 200 mm, andsufficiently hard to endure the impacts of the tapping machine. If a screed is applied to the surface of the test floor, itshall be ensured that it adheres perfectly at all points, and that it does not chip, crack or become pulverized.5.3 Preparation and installation of test specimen5.3.1 ClassificationDepending upon the type of floor covering, the test s
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