Suspended Drywall Ceiling Stc Rating

A single layer of drywall is ineffective in blocking or reducing sound.

Suspended drywall ceiling stc rating. All too often this plenums and suspended ceilings unbaffled ducts window to window outdoors common heating units transoms and air grilles. It is a single number rating corresponding to. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. The standard requires a minimum laboratory stc rating of 50 for party walls and floor ceilings.

Concrete with cellular steel 3 hr. The option of soundproof drywall is feasible and useful. Test curve and the stc rating is heavily influenced by a measurement in one fre quency band. 925 600 0618 technical bulletin stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound.

The drywall suspension system is available in pre engineered custom shapes for framing curved drywall ceilings such as vaults valleys domes and arches. Single layer of drywall stc 36. Urb concealed grid system and tile. Heavier gauge studs are more rigid and may not provide the same sound ratings.

The panel is light and easy for noise to vibrate through. High cac ceiling panels can provide this type of sound control increasing speech privacy in private spaces and reducing distractions to those outside. Stc means sound transmission class. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly.

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. Sound ratings shown for steel framed partitions apply to systems constructed with 25 gauge steel studs 24 o c unless otherwise noted. Hence noise transmits from the drywall to the studs to the air cavity in the ceiling. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

Ceiling attenuation a measurement of the ability of a ceiling panel to block the travel of sound from an enclosed room up into the plenum class cac and down to adjacent spaces. Page 1 of 2 5726 sonoma drive pleasanton ca 94566 phone. It is a single number rating for the performance of a ceiling in an open office with a partial height divider. Isolation clip integrates with the new hd8906iic main beam to help you ensure your drywall ceiling installations meet ibc requirements for iic.

Defined by astm 1111 the attenuation of sound that travels over a divider and reflects off of the ceiling is measured at human speech frequencies. Based on experience the stc values are very close to those obtained for the assembly under current methods at 16 frequencies. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr.