ISO 12354-3-2017 PDF

Full title and description

Building acoustics — Estimation of acoustic performance of buildings from the performance of elements — Part 3: Airborne sound insulation against outdoor sound. This international standard specifies a calculation model to estimate the airborne sound insulation (or sound pressure level difference) of a façade or other external building surface, taking into account direct and flanking transmission and providing results in frequency bands or as single-number ratings.

Abstract

ISO 12354-3:2017 defines principles and a calculation scheme that use measured element data (sound reduction indices and related quantities) together with models for direct and flanking transmission to estimate façade sound insulation and indoor sound pressure levels due to external noise sources (for example road traffic). The model aims to give results that correspond approximately to field measurements made in accordance with ISO 16283‑3; informative annex material (including Annex E) shows additional calculation uses such as indoor level estimation.

General information

• Status: Published (confirmed as current in the ISO review cycle).
• Publication date: July 2017 (17 July 2017).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 91.120.20 (Acoustics in building. Sound insulation).
• Edition / version: Edition 1 (ISO 12354-3:2017).
• Number of pages: 29 pages (official ISO publication count).

Scope

This part of ISO 12354 provides a calculation model to estimate the sound insulation or sound pressure level difference of a façade or other external surface of a building when exposed to outdoor sound sources. The scope covers the use of element sound reduction data and includes direct and flanking transmission paths. Calculations can be performed band-by-band (one‑third‑octave or octave bands) or converted to single-number ratings; the results are intended to correspond approximately to results from field measurements performed in accordance with ISO 16283‑3. The document also describes limitations, required input quantities and typical applications (including an informative annex on indoor level estimation).

Key topics and requirements

• Calculation model for airborne sound insulation of external building elements, including both direct transmission and flanking paths.
• Use of element performance data (sound reduction indices, areas, junction/flanking data) as model inputs.
• Detailed band-by-band calculation (frequency bands) with options to produce single-number ratings consistent with ISO 717 principles.
• Consideration of uncertainties and applicability limits; guidance for when simplified approaches are acceptable.
• Informative material for using calculated façade results to estimate indoor sound pressure levels (e.g., road traffic), including an annex with examples and notes on propagation assumptions.
• Normative links and cross-references to related measurement and rating standards (for example ISO 10140 series, ISO 16283‑3 and ISO 717).

Typical use and users

Used by acoustical consultants, façade and façade-system engineers, building designers and architects, product/test laboratories, manufacturers of windows/curtain walls and building envelope components, and regulatory bodies. Typical applications include early-stage performance prediction for façade designs, verification of expected indoor levels from outdoor sources, product development, and inputs to building acoustic compliance assessments and design trade-offs.

Related standards

ISO 12354-3 is part of the ISO 12354 series. Closely related documents include ISO 12354-1 (airborne sound insulation between rooms), ISO 12354-2 (impact sound insulation between rooms), ISO 12354-4 (transmission of indoor sound to the outside), ISO 12354-5 (sound levels due to service equipment) and earlier/ancillary documents such as EN/ISO measurement and rating standards (ISO 10140 series for laboratory measurements; ISO 16283 series for field measurements; ISO 717 for single-number ratings). ISO 12354-3 replaced the earlier ISO 15712-3:2005.

Keywords

building acoustics; façade; airborne sound insulation; sound reduction index; flanking transmission; calculation model; outdoor noise; indoor sound pressure level; ISO 12354; ISO 16283; ISO 10140; ISO 717.

FAQ

Q: What is this standard?

A: ISO 12354-3:2017 is an international standard that provides a calculation model to estimate the airborne sound insulation of façades and other external building surfaces against outdoor sound.

Q: What does it cover?

A: It covers a band-by-band calculation method (with conversion to single-number ratings where required) that uses element sound reduction data and accounts for direct and flanking transmission; it also includes guidance for estimating resulting indoor sound pressure levels from external sources.

Q: Who typically uses it?

A: Acoustical consultants, façade and building designers, test laboratories, manufacturers of building envelope components, and authorities or specifiers concerned with façade performance and indoor noise levels.

Q: Is it current or superseded?

A: ISO 12354-3:2017 is the published current edition (first edition, July 2017). The ISO bibliographic record indicates it was reviewed and confirmed in the ISO 5‑year review cycle (confirmed as current in the 2023 review). It superseded ISO 15712-3:2005.

Q: Is it part of a series?

A: Yes — it is Part 3 of the ISO 12354 series, which provides calculation models for estimating building acoustic performance from element performance (other parts cover airborne and impact insulation between rooms, transmission to the outside, service equipment noise, and related topics).

Q: What are the key keywords?

A: Façade, airborne sound insulation, sound reduction index, flanking transmission, outdoor noise, indoor sound pressure level, calculation model, ISO 12354, ISO 16283, ISO 10140, single-number rating.