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Noise transmission


Which is true?  A. The level of airborne noise that passes through either a floor/ceiling or wall assembly at a specific location produces an IIC rating.  B. The level of airborne noise that passes through either a floor/ceiling or wall assembly at a specific location gives an STC rating.  C. Sound transmission occurring due to impact noise transferring through a floor-ceiling assembly gives an IIC rating.  D. Sound transmission occurring due to impact noise transferring through a floor-ceiling assembly produces an STC rating.


B is correct.
IIC = Impact Isolation Class - impact noise, STC = Sound Transmission Class - airborne noise
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