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BS EN ISO 12354-1:2017

BS EN ISO 12354-1:2017

$215.11

Building acoustics. Estimation of acoustic performance of buildings from the performance of elements – Airborne sound insulation between rooms

Published By Publication Date Number of Pages
BSI 2017 104
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This document specifies calculation models designed to estimate the airborne sound insulation between adjacent rooms in buildings, primarily using measured data which characterize direct or indirect flanking transmission by the participating building elements, and theoretically-derived methods of sound propagation in structural elements.

A detailed model is described for calculation in frequency bands, in the frequency range 1/3 octave 100 Hz to 3 150 Hz in accordance with ISO 717-1, possibly extended down to 1/3 octave 50 Hz if element data and junction data are available (see Annex I); the single number rating can be determined from the calculation results. A simplified model with a restricted field of application is deduced from this, calculating directly the single number rating, using the single number ratings of the elements; a method to determine uncertainty is proposed for the simplified model (see Annex K).

This document describes the principles of the calculation scheme, lists the relevant quantities and defines its applications and restrictions.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
10 3 Terms and definitions
3.1 Quantities to express building performance
11 3.2 Quantities to express element performance
14 3.3 Other terms and quantities
15 4 Calculation models
4.1 General principles
18 4.2 Detailed model for structure-borne transmission
4.2.1 Input data
19 4.2.2 Transfer of input data to in situ values
21 4.2.3 Determination of direct and flanking transmission in situ
22 4.2.4 Limitations
23 4.3 Detailed model for airborne transmission
4.3.1 Determination from measured airborne direct transmission for small technical elements
4.3.2 Determination from measured total indirect transmission
4.3.3 Determination from the performance of the separate elements of a system
4.4 Simplified model
4.4.1 General
4.4.2 Calculation procedure
26 4.4.3 Input data
27 4.4.4 Limitations
5 Accuracy
28 Annex A (normative) Symbols
33 Annex B (informative) Sound reduction index
42 Annex C (informative) Structural reverberation time: Type A elements
45 Annex D (informative) Sound reduction index improvement of additional layers
50 Annex E (informative) Vibration transmission over junctions: case of heavy buildings
59 Annex F (informative) Vibration transmission over junctions: case of lightweight buildings
67 Annex G (informative) Determination of normalized flanking level difference
70 Annex H (informative) Determination of indirect airborne transmission from performance of system elements
72 Annex I (informative) Sound insulation in the low frequency range
74 Annex J (informative) Guidelines for practical use
82 Annex K (informative) Estimation of uncertainty
85 Annex L (informative) Calculation examples
100 Bibliography

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BS EN ISO 12354-1:2017
$215.11