Skip to main content

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
are-review.blogspot.com

Comments

Post a Comment

Try These Too!

Cantilevered beam

The bending moment in a cantilevered beam is negative. Which of the following statements are true? A. the top fibers are in compression B. the bottom fibers are in compression C. rebar placement should be either at the top or the bottom D. gravity loads are not a factor for negative moment Answer B. the bottom fibers are in compression in a cantilevered beam, so top fibers are in tension which requires rebar placement at the top to resist tension. ARE 4.0 exam prep: SS
Post a Comment
See the answer »

Moisture content in wood

The amount of shrinkage, weight, strength, and withdrawal resistance of nails is affected by the moisture content in wood. Wood that is grademarked kiln dry has a maximum moisture content of: A. 15% B. 19% C. 25% D. 30% Answer A. 15%. Dry lumber moisture content cannot exceed 19%. ARE 4.0 exam prep: SS
Post a Comment
See the answer »

Fire-alarm & detection systems

In an atrium connecting 2 or more stories, what device types are generally required per section 907.2.13 of the International Fire Code (IFC)? Answer Fire alarm activated by automatic alarm, fire flow or manual alarm. Further, in Group A, E or M occupancies, emergency voice / alarm communication system is required per 907.2.12.2 (High-rise buildings). ARE 4.0 exam prep: BS
Post a Comment
See the answer »