Plenum barriers can be constructed of a variety of different lightweight materials, including:
- limp, mass-loaded vinyl (MLV);
- stone wool insulation with a foil facing;
- standard gypsum wall board; or
- some combination of these materials.
This article omits research done on
MLV plenum barriers because they generally do not perform as well as stone wool insulation and gypsum-board plenum barriers; further, plenum-rated MLV is much whatsapp number database more costly than stone wool insulation and gypsum board.
Additionally, the MLV plenum barriers are more time-consuming to install.
While gypsum-board plenum barriers are just as cost-effective as
stone wool plenum barriers and perform as well acoustically,
the rigidity of the material can be a disadvantage in some buildings where there is floor/roof deflection, seismic joints, or expansion/contraction joints.
This article focuses on stone wool plenum barriers due to their low cost, relatively quick installation, pliability, and high sound-isolation performance, but other materials may prove to be appropriate in some applications.
The goals of this most current
phase of the research were twofold. First, the objective was to test whether
stone wool plenum barriers could achieve the high sound-isolation ratings that are required by acoustic standards. Secondly,
the mission was to determine whether the di dunia permainan daring plenum barriers could be
simplified to decrease material cost or installation time.
The test series investigated if the thickness/weight of the plenum barrier could be decreased, if the foil facing could be eliminated, and if taping the vertical seams between plenum barrier panels could be eliminated.
A series of sound-isolation tests was performed on a suspended, modular, acoustic ceiling system with and without various lightweight plenum barriers under laboratory conditions in a dual-room chamber. For the baseline test, the specimen comprised a metal liechtenstein number suspension grid filled with ceiling panels, but no plenum barrier above the demising wall. Subsequent tests added various lightweight plenum barriers. In all cases, the ceiling grid ran continuously (uninterrupted) over the top of the laboratory’s central demising wall.