Singh M., Sharma O., Mohanan V.

Various factors influence the sound transmission through lightweight gypsum board panels. Some of them are well known e.g. the thickness, density, number of sheets, and type of frame or sound absorbing material inserted into cavity. The paper presents an analyze of results of measurements carried out by Acoustics Section of NPL on different samples of lightweight gypsum board panels during last five years. Over hundreds fifty panels were tested on the same facility under similar conditions. Various technical solutions were considered. Comparison of values obtained confirm the influence of such factors as screw span, rigidity condition, channel connection, distance between studs, cavity absorption and sound bridges.