Polish standardization of acoustic parameters of buildings in connection with ISO standards

Abstract

One of the foundations of Polish standardization in building acoustics for many years has been to establish the Polish Norms, as EN ISO Standards translated into the Polish language. In recent time, following establishment of ISO 717, it became necessary to amend the Polish Standard (PN-B-02151-3:1999) in which the required acoustic insulation were defined. The new quantities of air-borne noise insulation are adapted to two model types of noise spectrum: pink noise characteristic, e.g., for residential noise, and road traffic noise with a considerable content of acoustic pressure levels in low- and medium-frequency ranges. The standard provides the following basic rules to determine the apparent indices of acoustic insulation (depending on the model spectrum): R′A1 = R′W + C or R′A2 = R′W + Ctr. The standard also includes an informative supplement describing the simplified computing method of the flanking transmission. The key advantage of this standard lies in its obligatory character, i.e., it must be adhered to in both the design as well as execution of buildings, and it ensures the basic standard of acoustic performance. To cater to the needs of the designers, the Acoustic Division of ITB prepared a classification of building products comprising the indicated standard for measurement or computation and the class symbol and the range of the single-number quantity.