Stc 50 Suspended Ceiling

24 x 24 tiles.

Stc 50 suspended ceiling.

Test curve and the stc rating is heavily influenced by a measurement in one fre quency band. Stc rating of 29 and fire rated astm e 84 class a. High cac ceiling panels can provide this type of sound control increasing speech. 50 stc with single layer designs.

Available in two sizes. Stc ratings of 50 if tested in a laboratory or 45 if tested in the field. Through base layer perpendicular to. Some armstrong ceilings contain mineral wool but they do not represent a health risk see below.

Fire rated floor ceiling assemblies using metal framing stc 50 iic 50 fire rating as shown 1. Stc is calculated by taking the transmission loss tl values tested at 16 standard frequencies over the range of 125 hz to 4000 hz and plotted on a graph. In base layer and 1 5 8 2. Optimizing ceiling systems and lightweight plenum barriers to achieve ceiling attenuation class cac ratings of 40 45 and 50.

The safety of those armstrong acoustical ceiling products that do contain mineral wool has been confirmed through occupational studies of mineral wool workers which have been carried out for more than 50 years. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. One hour fire rated partition 3. Drop ceiling tile sound barrier is made with foil faced mass loaded vinyl bonded to a scrim faced fiberglas.

25 gauge metal studs 24 with 1 type s drywall screws 36 o c. Installs by simply placing on top of existing ceiling tiles. 5 8 15 9 mm toughrock fireguard c gypsum board or 5 8 15 9 mm densarmor plus fireguard c gypsum panels applied perpendicular to i shaped wood joists or wood and steel trusses spaced 19 2 488 mm o c. The field test evaluates the dwelling s actual construction and includes all sound paths.

Maximum with 1 5 8 41 mm type s drywall screws 8 203 mm o c. 24 x 48 tiles. Two hour fire rated partition. One hour fire rated partition parallel to one side of min.

Resilient channels attached 16 406 mm o c. Ubc requirements for floor ceiling assemblies. The standard requires a minimum laboratory stc rating of 50 for party walls and floor ceilings. Stc 50 lab test 3 tl 93 333 alternative stc 50 wall options.