INTERNATIONAL STANDARD
Part2:Impactsoundinsulation
Partie 2: Protection contre le bruit de choc
insulationinbuildings andofbuilding Acoustics-Ratingofsound elements-
Acoustique - Evaluation de l’isolement acoustique des immeubles etdes elements de construction -
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① ISO 2020
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Contents
Page
4.1 General.4.2 Reference values. 44.3 Method of parison 4.3.1 Measurements in one-third-octave bands. 4 44.4 Statement of results. 4.3.2 Measurements in octave bands. 5 54.5 Impact sound insulation measured with heavy and softimpact sources. 6
5 floor coverings on bare heavy floors. Procedure for evaluating the weighted reduction in impact sound pressure level by 7
5.1 General. 75.2 5.3 Reference floor. Calculation. 8 75.4 Statement of results. 6
floorcoverings on lightweight flors. Procedure for evaluating the weighted reduction in impact sound pressure level by 9
6.1 Reference curves forthereference lightweightfloors used to calculateLt General.6.2 6.3 Calculation. 106.4 Statement of results. 10
Annex B (informative) Procedure for evaluating the equivalent weighted normalized impact sound pressure level of bare heavy floors.. 14
Annex C (informative) Examples of the evaluation of a single-number quantity 16
Annex D (normative) Rating method for impact sound insulation measured with a heavyand soft impact source.
Bibliography23
Foreword
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This document was prepared by Technical Committee ISO/TC 43 Acoustics Submittee SC 2 Agreement on technical cooperation between ISO and CEN (Vienna Agreement). Committee CEN/TC 126 Acoustic properties of building elements and of buildings in accordance with the
a aaq s o uoa sa pe sa ua srevised.
The main changes pared to the previous edition are as follows:
-A new Annex D with a method for rating heavy/soft impact sound insulation using an A-weightedmaximum impact sound pressure level.
A list of all parts in the ISO 717 series can be found on the ISO website.
poq sprepues peuoeu s asn au o paoap aq pinous quanop su uo suosanb o yeqpaa u plete listing of these bodies can be found at
Introduction
Methods of measurement of impact sound insulation in buildings and of building elements haves e r s a s s o e oo o u as insulation which are frequency dependent. The purpose of this document is to standardize a method whereby the frequency-dependent values of impact sound insulation can be converted into a singlenumber characterizing the acoustical performance.
