Effect of stud material and structural properties on the transmission loss of partitions



A common light frame wall design is gypsum wall board (GWB) cladding on each side of a row of studs. Steel studs are available in a variety of metal thicknesses and designs, and wood studs can be solid lumber or engineered wood composite studs with a variety of structural properties. Most published laboratory testing on these walls uses only a small subset of the available stud types, and the acoustical effect of changes to the stud parameters is not well understood. The authors and colleagues have performed several laboratory testing programs to systematically investigate the acoustical effects of stud properties, some of which were presented at Internoise 2020. This paper analyzes the effects of stud material and structural properties on third-octave transmission loss values and single-number ratings.