Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the USA, it is widely used to rate interior partitions, ceilings/floors, doors, windows and exterior wall configurations (see ASTM International Classification E413 and E90).
High Quality Video Content
Fun-learning and engaging experience
Anytime anywhere learning
Some of our courses are exclusively meant for registered users. Sign up to browse our entire range of courses, paid and free.