EN 15657-1-2009 en Acoustic properties of building elements and of buildings - Laboratory measurement of airborne and structure borne sound from building equipment - Part 1 Simplif.pdf

1、BS EN 15657-1:2009ICS 91.120.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAcoustic properties of building elements and of buildings Laboratory measurement of airborne and structure borne sound from building equipmentPart 1: Simplified cases where the equipm

2、ent mobilities are much higher than the receiver mobilities, takingwhirlpool baths as an exampleThis British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30November 2009. BSI 2009ISBN 978 0 580 58350 6Amendments/corrigenda issued since publicationDate Comm

3、entsBS EN 15657-1:2009National forewordThis British Standard is the UK implementation of EN 15657-1:2009.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/6, Building acoustics.A list of organizations represented on this committee can be obtained onrequest to its secre

4、tary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15657-1 June 2009 ICS 91

5、.120.20 English Version Acoustic properties of building elements and of buildings - Laboratory measurement of airborne and structure borne sound from building equipment - Part 1: Simplified cases where the equipment mobilities are much higher than the receiver mobilities, taking whirlpool baths as a

6、n example Proprits acoustiques des lments de construction et des btiments - Mesurage en laboratoire des bruits ariens et de structure des lments de construction - Partie 1: Cas simplifis prenant comme exemple les bains bouillonnantsAkustische Eigenschaften von Bauteilen und von Gebuden - Messung des

7、 Luft- und Krperschalls von haustechnischen Anlagen im Prfstand - Teil 1: Vereinfachte Flle, in denen die Admittanzen der Anlagen wesentlich hher sind als die der Empfnger am Beispiel von Whirlwannen This European Standard was approved by CEN on 20 May 2009. CEN members are bound to comply with the

8、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 o

9、r 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 ve

10、rsions. 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,

11、 Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nation

12、al Members. Ref. No. EN 15657-1:2009: EEN 15657-1:2009 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Terms and definitions .64 Symbols 75 Principle of the test method .75.1 Airborne sound measurement 75.2 Structure borne sound measurement .86 Measuring equipment 86.

13、1 Requirements for the frequency range .86.2 Requirements for the acoustic measuring equipment 86.3 Requirement for the vibration measuring equipment 87 Test facilities 87.1 Test room 87.1.1 Construction requirements .87.1.2 Acoustic requirements 87.2 Three plate test rig .98 Mounting of the specime

14、n 99 Test procedure and evaluation 109.1 Operating conditions 109.2 Airborne sound measurement procedure 109.3 Structure borne sound measurement 109.4 Sound power calculation . 119.5 Structural power calculation . 119.5.1 Structural power injected to the reception plate . 119.5.2 Correction with res

15、pect to a characteristic reception plate . 119.5.3 Characteristic reception plate mobility 1110 Calculation of single number descriptors 1210.1 General . 1210.2 Single number descriptor for airborne sound . 1210.3 Single number descriptor for structure borne sound . 1210.3.1 Reference structure born

16、e sound pressure level 1210.3.2 Single number descriptor 1211 Precision 1311.1 Repeatability 1311.2 Reproducibility 1312 Expression of results . 1313 Test report . 13Annex A (normative) List of symbols . 15Annex B (informative) Link to EN 12354-5 . 16B.1 General . 16B.2 Airborne sound . 16B.3 Struct

17、ure borne sound . 16BS EN 15657-1:2009EN 15657-1:2009 (E) 3 B.4 List of symbols 17B.5 Remark 17Annex C (normative) Calculation of the reference structure borne sound pressure level . 18C.1 Reference building configuration 18C.2 Transmission functions 18C.3 Reference structure borne sound pressure le

18、vel 19Annex D (informative) Example of an existing test rig 20Annex E (informative) Measurement procedure for the tub filling phase, using a reference water jet . 23E.1 General . 23E.2 Specification for a defined water jet 23E.3 Test procedure . 24Bibliography 25BS EN 15657-1:2009EN 15657-1:2009 (E)

19、 4 Foreword This document (EN 15657-1:2009) has been prepared by 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

20、 identical text or by endorsement, at the latest by December 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. 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

21、be held responsible for identifying any or all such patent rights. 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, Cyprus, Czech Republic, Denmark, Estonia, F

22、inland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 15657-1:2009EN 15657-1:2009 (E) 5 Introduction This European Standard, pre

23、pared by CEN/TC 126/WG 7, specifies methods for the measurement of airborne and structure borne sound produced by building equipment under laboratory conditions. It is the task of WG 7 to prepare laboratory test methods to determine the source characteristics, while WG 2 concentrates on the method p

24、redicting the airborne and structure-borne sound pressure levels produced in the buildings; the prediction method, described in document EN 12354-5, is based on power flow considerations and uses the laboratory test results as input data. The link to WG 2 is explained in more details in an informati

25、ve annex (Annex B). The quantities considered in this standard are the following: a) the airborne sound is characterized by the airborne sound power radiated by the equipment; this power is calculated from the airborne sound measured in a test room in which the equipment is mounted; b) the structure

26、-borne sound is characterized by the structural power injected by the equipment to the receiving structure to which the equipment is connected; since, in general, the equipment is connected up to three building elements (two walls and one floor), a three plate test rig is used and three structural p

27、ower components are determined, calculated from vibration velocities measured on the plates. When the equipment is mounted on low mobility structures (having point mobilities much lower than the mobilities measured on the equipment), the coupling between the source and the receiving structure is sim

28、pler and the way of transforming the power components measured in laboratory into the power components injected in situ to the building elements, greatly simplified. This first part (part 1) of the standard is restricted to these simplified cases; a second part (part 2) applicable to the other cases

29、 will be a future task of WG 7 and is not available yet. BS EN 15657-1:2009EN 15657-1:2009 (E) 6 1 Scope Part 1 of this European Standard shall apply to any source receiver configuration where the receiver mobility is 10 dB below the source mobility (see definition of mobility in Clause 3 below). Ho

30、wever, part 1 is restricted for the moment to whirlpool baths since only this type of building equipment has been experimentally studied so far; for other types of building equipment, the principle of the method is still valid, but some details in the standard might not be relevant. Therefore, this

31、first part: specifies methods for the measurement under laboratory conditions of airborne and structure borne sound produced by whirlpool baths connected to low mobility structures; for the case of whirlpool baths, building structures of mass per unit area equal or greater than 220 kg/m2, hollow ele

32、ments excluded, are considered as low mobility elements; defines the expression of the results, including data for comparison between products (single value descriptors) and input data for the prediction method (link to EN 12354-5 explained in Annex B). 2 Normative references The following reference

33、d 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. EN ISO 140-1:1997, Acoustics Measurement of sound insulation in building

34、s and of building elements Part 1: Requirements for laboratory test facilities with suppressed flanking transmission (ISO 140-1:1997) EN ISO 140-3:1995, Acoustics Measurement of sound insulation in buildings and of building elements Part 3: Laboratory measurements of airborne sound insulation of bui

35、lding elements (ISO 140-3:1995) EN ISO 3741:1999, Acoustics Determination of sound power levels of noise sources using sound pressure Precision methods for reverberation rooms (ISO 3741:1999) EN ISO 10848-1:2006, Acoustics Laboratory measurement of the flanking transmission of airborne and impact so

36、und between adjoining rooms Part 1: Frame document (ISO 10848-1:2006) ISO 5348:1998, Mechanical vibration and shock Mechanical mounting of accelerometers ISO 7626-1:1986, Vibration and shock Experimental determination of mechanical mobility Part 1: Basic definitions and transducers ISO 7626-2:1990,

37、Vibration and shock Experimental determination of mechanical mobility Part 2: Measurements using single-point translation excitation with an attached vibration exciter ISO 16063-21:2003, Methods for the calibration of vibration and shock transducers Part 21: Vibration calibration by comparison to a

38、reference transducer 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 specimen object of tests according to this European Standard active building component (to be connected to building structures) BS EN 15657-1:2009EN 15657-1:2009 (E) 7 3.2 w

39、hirlpool bath completely assembled unit which comprises a bath, water and/or air agitating device and associated electrical installation and in which noise and vibration control treatments such as resilient mounts can be included 3.3 overflow level level at which water in the bath will start to flow

40、 through any overflow pipe 3.4 reception plate power component structural power, measured in laboratory, injected to each plate of the test rig 3.5 point mobility of a plate frequency dependent ratio of the complex (amplitude and phase) vibrational velocity that a point force produces at its point o

41、f application, to the (complex) force applied, both force and velocity being normal to the plate 3.6 characteristic mobility of a plate point mobility of an infinite plate that has the same thickness and that is made of the same material as the plate considered 3.7 characteristic reception plate fic

42、tive plate having a constant input mobility of 5 10-6m/Ns NOTE See 9.5.3. 3.8 installed power component structural power (calculated) injected to each building element to which the equipment is connected (input datum for the prediction method) 3.9 reference structure borne sound pressure level struc

43、ture borne sound pressure level obtained when mounting the equipment in the reference building 3.10 reference building well defined building configuration in which the equipment is fictively mounted and used when comparing products 4 Symbols A list of the symbols and units used in this European Stan

44、dard is given in Annex A. 5 Principle of the test method 5.1 Airborne sound measurement The specimen is mounted inside the test room. The sound in the test room, produced as airborne sound radiated from the object, is measured. The source sound power is then estimated from the measured sound correct

45、ed for background noise, and from the measured reverberation time of the test room. Later in the process of calculation, a single value descriptor for the source sound power is calculated (see Clause 10). BS EN 15657-1:2009EN 15657-1:2009 (E) 8 NOTE The structure borne sound radiated by the structur

46、es, to which the specimen is connected, is usually much lower than the airborne sound and can be neglected; nevertheless, the validity of this assumption can always be checked afterwards by calculating the structure borne contribution using the prediction method given in EN 12354-5 and by comparing

47、the result to the airborne sound measured. 5.2 Structure borne sound measurement The specimen is connected to a three plate test rig. The spatially averaged vibration velocities of the three plates (reception plates) are measured. The three structural powers injected to the plates are then estimated

48、 from the measured velocities corrected for background vibration and from the measured structural reverberation times of the plates. The results are then corrected for the difference in input mobility between the reception plates used and a characteristic reception plate, leading to three characteri

49、stic reception plate power components (see Clause 9), which can be used in round robin tests. Later in the process of calculation, a single value descriptor for the source structural power is calculated (see Clause 10). 6 Measuring equipment 6.1 Requirements for the frequency range Throughout this standard the frequency range is l