EVS-EN ISO 12354-3:2017

This document specifies a calculation model to estimate the sound insulation or the sound pressure
level difference of a façade or other external surface of a building. The calculation is based on the sound
reduction index of the different elements from which the façade is constructed and it includes direct
and flanking transmission. The calculation gives results which correspond approximately to the results
from field measurements in accordance with ISO 16283-3. Calculations can be carried out for frequency
bands or for single number ratings.
The calculation results can also be used for calculating the indoor sound pressure level due to for
instance road traffic (see Annex E).
This document describes the principles of the calculation model, lists the relevant quantities and
defines its applications and restrictions.