Ul 521 Floor Assembly

Here we present the components of fire rated ul designs for wood framed floor ceilings and the requirements needed for meeting sound control per section 1207 of the international building code ibc.

Ul 521 floor assembly. Floor topping thickness shall be a min of 1 in. Ul standard ul 521 edition 7 standard for heat detectors for fire protective signaling systems edition date. 406 mm 1 4 76 mm 0 3. Class a b or c prepared roof coverings may be used on wood floor designs without a reduction of the fire resistance rating provided a nailer of equal thickness to the length of the mechanical fasteners is added to the flooring.

Finish rating 91 or 98 min. Floor topping thickness shall be a min of 3 4 in. 25mm hacker industries inc type firm fill scm 250 quiet qurl 55 025. Floor topping thickness shall be a min of 1 1 2 in.

19mm hacker industries inc firm fill scm 125 alternate floor mat materials optional floor mat material nom 1 4 in. Ul bxuv guideinfo section iii 19 includes the following. For the most up to date information or assembly options refer to the ul fire resistance directory. One layer 5 8 thick gypsum board ul type ulix assembly ul design no.

L521 system 4 notes. 32 mm hacker industries inc firm fill scm 400 quiet qurl 60 040 alternate floor mat materials optional floor mat material nom 3 4 in. Discover monokote products ul designs thickness and more about floor assemblies. 19 mm thick loose laid o ver the subfloor.

Estimated range of acoustical performance is based on laboratory test data of similarly constructed assemblies. Use of floor ceiling designs for roof ceiling or reverse. See floor and roof topping mixtures ccox category for names of classified companies. M521 november 13 2019 unrestrained assembly rating 2 hr.

Floor topping mixture bearing the ul classification marking as to fire resistance with a minimum compressive strength of 1500 psi. 6mm thick loose laid over the subfloor. Refer to the ul fire resistance directory for information regarding product orientation and fastening requirements. Floor topping thickness shall be a min of 1 1 4 in.

See item 6 this design was evaluated using a load design method other than the. Floor mat materials optional floor mat material nom 1 8 in.