STC

What is the difference between STC, CSTC and CAC?

Leave a Comment / Building Technology, Commercial, Commercial Office, Interior Design /

Ceilings have their own testing system (CAC) that is equivalent to wall ratings and more applicable to ceilings per the ASTM. Walls are rated using single pass tests to determine their STC rating because only 1 wall separates two rooms. This test isn’t really applicable to ceilings because sound has to travel through 2 ceilings to move […]

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University of Denver Boettcher Auditorium – The Sound Barrier

Leave a Comment / Commercial, Construction, Denver, Educational, Projects in Process, Remodels /

At the University of Denver’s Boettcher Center Auditorium we have finished installing the insulation in the sound wall between classrooms B and C.  It is essential that these two classrooms are sonically independent from each other for the convenience of the professors and students.  An STC rating of 60 is typical in this kind of

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