Abstract
The furring system for attaching drywall to concrete block walls must be chosen with care if sound transmission is not to be increased at low frequencies. Once drywall is attached to a normal-weight block wall, sound transmission loss is increased above a frequency fx given by fx=K/(Md)1/2 . (M is the surface mass of the drywall, kg/m2, and d is the depth of the cavity behind it, m. K is 108 for an empty cavity and 60 for a cavity filled with fibrous sound-absorbing material.) Sound transmission loss data measured for a number of 190-mm normal-weight concrete block wall systems are presented to support the above result. Walls were measured with drywall systems mounted on different furring types on one side and on both sides. The cavities behind the drywall were either empty or filled with glass fiber. A simple, limited prediction scheme that can be used to recreate the data is described. The measurements in this paper present a consistent picture of the influence of the depth of the air space between the drywall and the block, and the presence of sound-absorbing material in the cavity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
