The Building Science Branch of the Alberta Public Works, Supply, and Services has conducted extensive research on sound isolation between offices with suspended ceilings. (For more, read K. Kruger’s piece, “
The Effect of Various Parameters on
the Sound Isolation between Offices with Suspended rcs data Ceilings,” from Canadian
Acoustics [16 (2)] in 1988.) It states attempting to match the isolation performance of a ceiling to that of the demising wall can lead to disappointing results.
Canadian acoustics seo empresarial é construído para escala standards. Open plenums, like the one on the right, are not permitted by U.S. or Canadian acoustic standards
—they do not meet occupant expectations of sound privacy.
Another conclusion is the most effective
method of reducing sound transmission through the ceiling is to introduce a barrier into
the plenum (Figure 2).
It only has to be positioned above the demising wall between the two adjacent rooms, and does not need to extend around the entire perimeters. This would allow return air to still flow mobile lead freely through the plenum.
When plenum barriers do need to surround the room’s entire perimeter,
Unless the door is heavy,
with gaskets, and acoustically rated at STC 40 or above,
it will likely transmit more noise
than the return-air opening in the plenum barrier above the ceiling.