EN 15657:2017

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QDPHVWLWYHAkustische Eigenschaften von Bauteilen und von Gebäuden - Messung des Körperschalls von haustechnischen Anlagen im Prüfstand für alle InstallationsbedingungenPropriétés acoustiques des éléments de construction et des bâtiments - Mesurage en laboratoire des bruits structuraux des équipements de bâtiment pour toute condition d’installationAcoustic properties of building elements and of buildings - Laboratory measurement of structure-borne sound from building service equipment for all installation conditions91.120.20L]RODFLMDAcoustics in building. Sound insulation17.140.01Acoustic measurements and noise abatement in generalICS:Ta slovenski standard je istoveten z:EN 15657:2017SIST EN 15657:2017en,fr,de01-september-2017SIST EN 15657:2017SLOVENSKI
STANDARDSIST EN 15657-1:20091DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15657
July
t r s y ICS
{ sä s t rä t r Supersedes EN
s w x w yæ sã t r r {English Version
Acoustic properties of building elements and of buildings æLaboratory measurement of structureæborne sound from building service equipment for all installation conditionsPropriétés acoustiques des éléments de construction et des bâtiments æ Mesurage en laboratoire des bruits structuraux des équipements de bâtiment pour toute condition d 5installation
Akustische Eigenschaften von Bauteilen und von Gebäuden æ Messung des Körperschalls von haustechnischen Anlagen im Prüfstand für alle Installationsbedingungen This European Standard was approved by CEN on
s s May
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w x w yã t r s y ESIST EN 15657:2017

List of symbols . 17 Annex B (normative)
Specifications for Whirlpool baths . 19 B.1 Scope . 19 B.2 Specifications for whirlpool baths . 19 B.2.1 Mounting of the specimen . 19 B.2.2 Operating conditions . 19 B.2.3 Expression of results . 19 B.3 Operating conditions for the tub filling phase, using a reference water jet . 19 SIST EN 15657:2017

Power substitution method . 22 C.1 General . 22 C.2 Principle of the method . 22 C.3 Measuring procedure . 22 C.4 Specifications for low mobility plates . 23 C.5 Specifications for high mobility plates. 23 Annex D (informative)
Link to models predicting structure borne sound pressure levels . 24 D.1 General . 24 D.2 Link to EN 12354-5 . 24 D.2.1 General . 24 D.2.2 Low mobility receiver . 24 D.2.3 High mobility receiver . 25 D.3 Link to EN ISO 12354-2 . 25 Annex E (informative)
Reference structure borne sound power calculation . 26 E.1 General . 26 E.2 Low mobility reference test rig . 26 E.3 High mobility reference test rig . 26 Annex F (informative)
Example of existing test rigs . 27 F.1 Low mobility reception plates . 27 F.2 High mobility reception plate . 29 Bibliography . 30
Yi ratio of the complex (magnitude and phase) vibrational velocity that a point force produces at its point of application i, to the complex force applied, both force and velocity being normal to the receiver 3.8 single equivalent mobility
Yeq quantity approximated as the mean value of the point mobility at each contact i, averaged over the N contacts, which for the magnitude, is according to: ≈∑Neqii1YYN (3) and for the real part, is according to: ≈∑Neqii1Re()Re()YYN (4) Note 1 to entry: For receiver structures, the mean values are over the contact locations, if known. If the contact locations are not known, then the mean values are over the plate area. 3.9 mobility in 1/3 octave bands
Y1/3 oct value obtained from direct measurement in narrow frequency bands (see 6.2); 1/3 octave values of both mobility magnitude and real part are obtained as the mean value of the narrow band data averaged over the frequencies within the band considered (assuming M frequency components k): SIST EN 15657:2017

Y point mobility of an infinite plate having the same thickness and made of the same material as the plate considered ∞=⋅18/()YmB (7) Note 1 to entry: The characteristic input mobility is a real value, independent of frequency and dependent on the mass per unit area m and the bending stiffness B of the plate. 3.11 installed power P inst calculated structural power injected to each building element to which the equipment is connected; this power is the equipment input data for the prediction according to EN 12354-5 Note 1 to entry: The characterization of equipment connected to two or three building elements (e.g. pipes connected to floor and walls) will lead to two or three installed power components respectively. 4 Frequency range of measurement The measurements and calculation shall be performed using the one-third octave bands having the following centre frequencies in Hz: Table 1 — Centre frequencies in Hz 50 63 80 100 125 160 200 250 315 400 500 630 800 1 000 1 250 1 600 2 000 2 500 3 150
The frequency bands where measured values show signal to noise ratio problems, shall be reported in the test report. 5 Installed power determination For all installation conditions, the installed power level in dB re 10 «12 Watt is approximated from the single equivalent free velocity level in dB re 10 «9 m/s of the source and the single equivalent mobilities of the source and the receiver, using Y0 = 1m/(Ns) as reference, and all quantities being evaluated in 1/3 octave bands, according to: SIST EN 15657:2017

Key 1 source 2 vibration isolator Figure 1 — Source mounted on vibration isolators NOTE As an alternative way, the source can be freely suspended. 6.1.2 Expression of the results For each frequency band, the velocity levels Lvf,i are energetically summed over N contact points, leading to the source single equivalent free velocity level Lvf,eq: =∑vf,iNL/10vf,eqi10 10lg()L (10) Formula (10) corresponds to Formula (1) when expressed in dB. 6.2 Direct measurement of mobility (source and receiver) The recommendations for direct measurement apply to both sources and receivers. However, sources should be isolated according to ISO 9611 (as shown in Figure 1) or freely suspended, and receivers should be dynamically unloaded, when measuring their mobility. Point mobility measurements at the contact points are required for estimating the source equivalent mobility magnitude according to Formula (3), the receiver equivalent mobility magnitude according to Formula (3), and the receiver equivalent mobility real part according to Formula (4). The measurements are performed according to ISO 7626-1 and limited to single point translational excitation (normal to the receiving plate) according to ISO 7626-2; impact excitation is allowed, according to ISO 7626-5. The ISO 7626- series considers mobility measurements in narrow frequency bands. 1/3 octave band values are then obtained according to 3.10. SIST EN 15657:2017
...