Stc Steel Roof

The standard requires a minimum laboratory stc rating of 50 for party walls and floor ceilings.

Stc steel roof.

Veneer plaster partitions achieve up to 63 stc in steel framed resilient systems and up to 52 stc in wood framed resilient systems have achieved 1 to 4 hr. The higher the stc value the better a construction reduces the transmission of sound. Trusses supporting metal roof deck panels covered by 1 2 12 7 mm regular gypsum sheathing either loose laid or adhesively or mechanically attached to roof deck. Building is utilizing common wood trusses with concrete tile roofing and insulation directly beneath roof deck to avoid venting read penetrations.

Steel cornerbead 1 1 2 38 mm flanges applied with 1 25 mm type s. Will also be providing acoustical ceiling grid tiles throughout. Sound transmission loss properties of a wall or roof is the sound transmission class stc. One layer of any 5 8 15 9 mm densarmor plus fireguard panel applied without horizontal joints and parallel to 1 5 8 41 mm steel studs located at each corner of ts8x8x0 250 tube steel column with 1 25 mm type s drywall screws 24 610 mm o c.

Project is within an air force approach zone. Insulation thickness has a more significant effect on stc ratings than does density for a typical steel stud wall construction the first inch of fiber glass insulation can increase the stc value 6 or more points each additional inch of fiber glass insulation increases the stc value from one to two points conversely density variations have minimal effect on the stc rating see table 2. 6122 benjamin road tampa fl 33634. 5 or 6 points in laboratory stc ratings for essentially similar assemblies.

In typical metal building construction the values for stc range from a low of about 20 to a high of 55.