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BS EN 12354-5:2023 – TC

BS EN 12354-5:2023 – TC

$280.87

Tracked Changes. Building acoustics. Estimation of acoustic performance of buildings from the performance of elements – Sounds levels due to the service equipment

Published By Publication Date Number of Pages
BSI 2023 222
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This document describes calculation models to estimate the sound pressure level in buildings due to service equipment. As for the field measurement documents (EN ISO 16032 for the engineering method and EN ISO 10052 for the survey method), it covers sanitary installations, mechanical ventilation, heating and cooling, service equipment, lifts, rubbish chutes, boilers, blowers, pumps and other auxiliary service equipment, and motor driven car park doors, but can also be applied to others equipment attached to or installed in buildings. The estimation is generally based on measured data that characterizes both the equipment (source) and the sound transmission through the building. The same equipment can be composed of different airborne and/or structure borne sources at different locations in the building; the standard gives some information on these sources and how they can be characterized; however, models of the equipment itself are out of the scope of this standard. This document describes the principles of the calculation models, lists the relevant input and output quantities and defines its applications and restrictions. The models given are applicable to calculations in frequency bands. It is intended for acoustical experts and provides the framework for the development of application documents and tools for other users in the field of building construction, considering local circumstances. The calculation models described use the most general approach for engineering purposes, with a link to measurable input quantities that specify the performance of building elements and equipment. However, it is important for users to be aware that other calculation models also exist, each with their own applicability and restrictions. The models are based on experience with predictions for dwellings and offices; they could also be used for other types of buildings provided the dimensions of constructions are not too different from those in dwellings.

PDF Catalog

PDF Pages PDF Title
1 30476388
145 A-30443555
146 undefined
150 European foreword
151 1 Scope
2 Normative references
152 3 Terms and definitions
4 Relevant quantities
4.1 General
4.2 Quantities to express building performances (output quantities)
4.2.1 General
153 4.2.2 Relation between quantities
4.3 Quantities to express product performances (input quantities)
4.3.1 General
4.3.2 Sources of sound
154 4.3.3 Transmission of sound
5 Calculation models
5.1 General principles
155 5.2 Airborne sound transmission through building constructions
5.2.1 General
156 Figure 1 — Configurations for airborne sound transmission: source in receiving room (left); source in another room, case of rooms next to each other (right)
5.2.2 Source in receiving room
5.2.3 Source in another room
157 5.3 Structure-borne sound transmission through building constructions
5.3.1 General
158 Figure 2 — Configurations for structure-borne sound transmission: source in receiving room (left); source in another room, case of rooms next to each other (right)
5.3.2 General case
5.3.2.1 General
159 5.3.2.2 Using the apparent unit power sound pressure level of the receiver
160 5.3.2.3 Using the unit power sound pressure level of the receiver
5.3.3 Case with receiver mobility much lower than the source mobility
161 Table 1 — Force level LFb,eq,stm in dB re 1 μN for the ISO tapping machine in 1/3 octave bands
162 5.4 Accuracy
163 6 Application of models
6.1 General
6.2 Equipment involving internal airborne transmission
6.2.1 General
164 6.2.2 Source airborne sound power
6.2.2.1 General
6.2.2.2 Duct openings
6.2.2.3 Duct wall
165 6.2.3 Indirect airborne sound transmission through duct system
6.2.3.1 General
6.2.3.2 Measurement
6.2.3.3 Calculation
6.3 Equipment involving internal fluid-borne and structure-borne transmissions
6.3.1 General
166 6.3.2 Water supply installations
6.3.2.1 General
167 Table 2 — Compilation of sources and relevant type of transmission in water supply systems
168 Figure 3 — General transmission situation of sources in water supply systems
169 Figure 4 — Transmission situation for a basin mounted tap
Figure 5 — Transmission situation for a wall mounted tap
170 Figure 6 — Transmission situation for a whirlpool bath mounted on a three-dimensional reception plate according to EN 15657
6.3.2.2 Guidelines
172 6.3.3 Water-heating systems
173 6.3.4 Waste water installations
6.3.4.1 General
6.3.4.2 Prediction procedure
6.4 Equipment involving internal structure-borne transmission only
6.4.1 General
174 6.4.2 Prediction procedure
6.4.2.1 Airborne sound
6.4.2.2 Structure-borne sound
6.4.2.3 Lift doors
175 Annex A (normative) List of symbols (main text and normative annexes)
178 Annex B (normative) Sound levels at low frequencies
179 Figure B.1 — Examples of the Waterhouse correction for rectangular rooms
180 Annex C (normative) Additional path by path prediction methods
C.1 Introduction
C.2 Method considering each transmission path ij globally
C.3 Method considering each transmission path ij characterized by the flanking sound reduction index
182 Annex D (informative) Non-stationary sources
D.1 Descriptors used in field measurements
183 D.2 Prediction of “Slow” and “Fast” time weighted descriptors for quasi-stationary and non-stationary sources
184 Annex E (informative) Input quantities for estimating source sound powers along duct systems and sound transmission between rooms through duct systems
E.1 Introduction
E.2 Input quantities
E.2.1 Sound power sources in the duct system
E.2.1.1 General
E.2.1.2 Fans generated sound
E.2.1.3 Elements Flow-generated sound
E.2.2 Sound power reduction in the duct system
E.2.2.1 General
E.2.2.2 Elements as unit
185 E.2.2.3 Elements with reduction per unit length
E.2.2.4 Elements in the duct with given insertion loss
E.2.3 Sound radiation from air terminal devices and openings
186 E.2.4 Sound radiation by duct wall
187 E.2.5 Breaking-in sound power
E.2.5.1 Through duct walls
E.2.5.2 Through openings or devices
188 E.3 List of symbols
Table E.1 — List of symbols
189 Annex F (informative) Estimation of receiver and source mobilities, and isolator on-site performance
F.1 General
F.2 Receiver mobility
F.2.1 Heavyweight building elements
190 Figure F.1 — Point mobility at 7 locations on concrete plate (left) and on aerated concrete plate (right)
191 F.2.2 Lightweight building elements
Figure F.2 — Real part of normalized point mobility, as function of normalized distance to fixing
192 F.3 Source mobility
F.3.1 General
F.3.2 Compact sources
Figure F.3 — Schematic drawing of a compact source
193 Figure F.4 — Measured point mobility of a compact air pump and calculated values.
F.3.3 Plate-like machine bases
Figure F.5 — Point mobility at four mounts on a fan plate base: average in third octaves (solid black line); characteristic mobility (dashed line)
194 F.3.4 Flange-cantilever machine bases
Figure F.6 — Point mobility at four points on a fan flange base: average in third octaves (solid black line); estimate (dashed line)
F.3.5 Frame bases
195 Figure F.7 — Point mobility at eight mount points on a frame base with average value (solid black line) and characteristic beam mobility (dashed line)
F.4 Isolator performance
196 Table F.1 — Isolator insertion gain for various installation conditions
197 Annex G (informative) Calculation examples
G.1 General
G.2 Cases with receiver mobility much lower than the source mobility (heavy structures)
G.2.1 General
G.2.2 Situation
Figure G.1 — Ground plan of building
198 Figure G.2 — Section A and Section B (in Figure G.1)
199 G.2.3 Results for R’ and L‘n,i
200 Table G.1 — R’ and L’n from the calculations according to EN ISO 12354-1 and EN ISO 12354-2
G.2.4 Source data: LWa and LFb,eq
201 Table G.2 — LWa and LFb,eq of an idealized “worst case” airborne and structure-borne source
202 G.2.5 Results for L’ne,a, L’ne,s,i and L’ne
Table G.3 — L’ne,a and L’ne,s,i and L’ne from the calculations according to EN 12354-5
203 G.3 General Case (lightweight structures)
G.3.1 Using the apparent unit power sound pressure level of the receiver
G.3.1.1 General
G.3.1.2 Transmission situation
G.3.1.3 Construction details
204 Figure G.3 — Detail of junction: exterior walls and separating floor
Figure G.4 — Configuration considered
205 G.3.1.4 Measured data for transmission
Table G.4— for wall and floor excitation as indicated in Figure G.4 a)
G.3.1.5 Prediction examples
206 Table G.5 — Mobility of receiving structures for both examples and estimated source mobility
207 Table G.6 — Installed power levels for both examples
208 Table G.7 — Apparent normalized sound pressure levels for both examples
G.3.2 Using the unit power sound pressure level of the receiver and EN ISO 12354-2
G.3.2.1 General
209 G.3.2.2 Building configuration
Figure G.5 — Junction between floor and double-frame separating double-wall
210 G.3.2.3 Airborne sound prediction
Table G.8 — Apparent normalized sound pressure level calculation for airborne sound transmission of a unit power airborne sound source
211 G.3.2.4 Structure-borne sound prediction
Table G.9 — Floor unit power sound level calculation using Formula (G.1)
212 Table G.10 — Floor apparent unit power sound pressure level calculation
G.3.2.5 Total apparent sound level of any service equipment
213 Table G.11 — Floor apparent unit power sound pressure level calculation
214 G.4 Calculation examples of Single Number Quantities (SNQ) applicable to products characterized using EN 14366-1
G.4.1 General
Figure G.6 — Pipe system configuration
G.4.2 Example for heavy structures
G.4.2.1 General
G.4.2.2 Situation
215 G.4.2.3 Results for L’n,wall
Table G.12 — L’n,wall for the building configuration of Figure G.6 (horizontal transmission)
G.4.2.4 Calculation of single-number values for L’ne,s,wall
216 G.4.3 Example for lightweight structures
G.4.3.1 General
G.4.3.2 Situation
Results for
Table G.13 — for the building configuration of Figure G.6 (horizontal transmission)
217 G.4.3.3 Calculation of single-number values for L’ne,s,wall
Table G.14 — Receiver (wall) mobility
218 Bibliography

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BS EN 12354-5:2023 - TC
$280.87