You must first complete Lesson 01 – Code Overview before viewing this Lesson
Please sign up for the course before starting the lesson.

Sound and Acoustical Rating Noise travels in two ways.  Airborne sound insulation is the acoustically rated separation of the wall and floor-ceiling assemblies.  Impact sound insulation is echoed from surface contact such as walking on a floor. Sound Transmission Class (STC) measures noise levels.  STC is a single number rating used to compare the effectiveness of […]

Back to: The on-line Original IDEX CA Prep Class©