本标准提供了基于测试校准计算程序的隔声等级（STC）和室外-室内传输等级（OITC）砌体墙评级的最低要求。所涵盖的主题包括参考标准、定义和符号、材料、施工以及混凝土砌体和粘土砌体组件的STC和OITC评级方法。本标准是以强制性语言写成的法律文件，因此可能会成为合法通过的建筑规范的一部分。评注介绍了制定标准所用的背景细节、委员会注意事项和研究数据。粘土和混凝土砖墙的单独方程用于反映这些材料与声音传输相关的不同特性。 本标准在2021国际建筑规范中引用。

This Standard provides minimum requirements for rating masonry walls for sound transmission class (STC) and outdoor-indoor transmission class (OITC) based on testing calibrated calculation procedures. Topics covered include reference standards, definitions and notations, materials, construction, and methods to STC and OITC rating for concrete masonry and clay masonry assemblies.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.This standard is adopted by reference in the 2021 International Building Code.