DS/EN ISO 717-2:2013 (Valid to: 30-06-2021)

Acoustics - Rating of sound insulation in buildings and of building elements - Part 2: Impact sound insulation

Valid to: 30-06-2021
Replaced by:
Price from:
€ 68.18


ISO 717-2:2013: a) defines single-number quantities for impact sound insulation in buildings and of floors; b) gives rules for determining these quantities from the results of measurements carried out in one-third-octave bands in accordance with ISO 10140-3 and ISO 140-7, and in octave bands in accord-ance with that option in ISO 140-7 for field measurements only; c) defines single-number quantities for the impact sound reduction of floor coverings and floating floors calculated from the results of measurements carried out in accordance with ISO 10140-3; d) specifies a procedure for evaluating the weighted reduction in impact sound pressure level by floor coverings on lightweight floors.
The single-number quantities in accordance with ISO 717-2:2013 are intended for rating impact sound insulation and for simplifying the formulation of acoustical requirements in building codes. An additional single-number evaluation in steps of 0,1 dB is indicated for the expression of uncertainty (except for spectrum adaptation terms).The required numerical values of the single-number quantities are specified according to varying needs.
The rating of results from measurements carried out over an enlarged frequency range is described in an annex.
A method for obtaining single-number quantities for bare heavy floors according to their performance in combination with floor coverings is described in a second annex.
An example of the calculation of a single-number quantity is given in a third annex.

Number of pages: 32

Published: 2013-04-02

Date of approval: 2013-03-22

International relationships : EN ISO 717-2:2013 IDT ISO 717-2:2013 IDT

ICS: 91.120.20 - Acoustics in building. Sound insulation

Item number: M254987

*Expected revoked date: 30-06-2021



  • CEN/TC 126
  • ISO/TC 43/SC 2/WG 18

Danish committee