5 Questions
What does STC stand for?
Sound Transmission Class
What does a higher STC number indicate?
More effective sound insulation
What is the equivalent rating used outside the US?
ISO Sound Reduction Index (SRI)
What are the two most basic principles to improve the STC of a partition?
Adding mass and increasing overall thickness
What standard provides the STC rating?
ASTM E413 based on laboratory measurements performed in accordance with ASRM E90
Test your knowledge of sound transmission and building acoustics with this quiz on Sound Transmission Class (STC) ratings. Challenge yourself to understand how building partitions attenuate airborne sound and the impact of STC ratings on noise reduction.
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