Description
This Standard provides minimum requirements for rating masonry walls for a sound transmission class (STC) and outdoor-indoor transmission class (OITC) based on field or laboratory testing or based on a calculation procedure.
The Standard is written as a legal document in mandatory language so that it may form a part of a legally adopted building code. The Commentary presents background details, committee considerations, and research data used to develop the Standard. Separate equations for clay and concrete masonry walls are used to reflect the varying properties of these materials related to sound transmission.
