Stc Rating Of Concrete On Metal Deck

Iic 40 cad drawing composite slab of 3 thick concrete steel deck and steel joists with rsic 1 and double layer 5 8 gypsum board ceiling.

Stc rating of concrete on metal deck.

1 5 steel deck section properties. Stc ratings for wall floor and window materials and assemblies 3 appendix a stc ratings a 1 walls a 1 exterior a 1 interior a 9 wooden studs a 9 metal studs a 14 floors a 16 wood a 16 concrete a 21 windows a 24 doors a 27 exterior a 27 interior a 29 appendix b references b 1. From walls to floors from table 1 an 8 in. With no additional sound isolation system a 6 inch concrete slab has an stc of 53 and an iic of 27 so treatment of at least the impact noise is necessary to meet code.

22 23 1 6 web crippling. 31 1 10 penetrations and openings. Restrained assembly rating type of protection concrete thickness type 1 classified deck type u l. Refer to the u l.

Hollow core precast plank option 11 the stc rating is 53. Installing insulation within a wall or floor ceiling cavity will improve the stc rating by about 4 6 db which is clearly noticeable. A wall must extend to the structural deck in order to achieve optimal isolation. Steel beams load bearing metal studs masonry insulated concrete block forms and poured concrete are all compatible slabs can be designed with u l.

Fire resistance directory for the necessary construction details. 28 30 1 9 non composite deck slab design. Concrete floor slab option 8 has an stc rating of 55. Concrete topping an stc rat ing of 51 can be achieved.

Additionally for an 8 in. Sound transmission class guidance introduction the noise guidebook. Metal deck with 3 in. With option 10 a concrete floor slab on metal deck 3 in.

Concrete thickness is thickness of slab above deck in. 26 27 1 8 composite deck slab design. Sound transmission class stc provides an estimate of the acoustic performance of a wall in certain common airborne sound insulation applications the stc of a wall is determined by comparing sound transmission loss stl values at various frequencies to a standard contour stl is the decrease or attenuation in sound energy in db. 24 25 1 7 steel deck at concrete form.

The isolation quality or stc rating increases by approximately 5 db which is clearly noticeable. Floors relativity stiff and massive concrete floors still can have poor less than code impact ratings. Determining sound transmission class stc for concrete masonry. Riverbank acoustical laboratory ral test number tl01 220.

2 3 4 unrestrained beam rating. Fire rating of one or two hours without applying drywall or spray on fireproofing to the deck independent sound transmission stc tests prove that ultrabond slabs outperform other floor systems.