Stc Rating Of Concrete On Metal Deck

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.

Stc rating of concrete on metal deck. The isolation quality or stc rating increases by approximately 5 db which is clearly noticeable. 1 5 steel deck section properties. Hollow core precast plank option 11 the stc rating is 53. Deck finish shall be galvanized 2.

Sound transmission class guidance introduction the noise guidebook. Steel beams load bearing metal studs masonry insulated concrete block forms and poured concrete are all compatible slabs can be designed with u l. Riverbank acoustical laboratory ral test number tl01 220. Concrete floor slab option 8 has an stc rating of 55.

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. Additionally for an 8 in. Restrained assembly rating type of protection concrete thickness type 1 classified deck type u l. 31 1 10 penetrations and openings.

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. From walls to floors from table 1 an 8 in. Concrete topping an stc rat ing of 51 can be achieved. 24 25 1 7 steel deck at concrete form.

Metal studs perform. 22 23 1 6 web crippling. Refer to the u l. Metal deck with 3 in.

With option 10 a concrete floor slab on metal deck 3 in. 28 30 1 9 non composite deck slab design. 2 3 4 unrestrained beam rating. 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.

Floors relativity stiff and massive concrete floors still can have poor less than code impact ratings. Concrete thickness is thickness of slab above deck in. Determining sound transmission class stc for concrete masonry. Fire resistance directory for the necessary construction details.

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. Stc iic ratings for fc 214 floor covering stc iic test number carpet pad 48 54 nrc 1059 1060 vinyl 47 35 nrc 1063 1064 lightweight concrete carpet pad 56 72 nrc 1053 1054 lightweight concrete and vinyl 56 48 nrc 1051 1052 gypcrete carpet pad 52 63 nrc 1076 1077 gypcrete 53 43 nrc 1085 1086 stc iic ratings for ul l528.