One layer 5 8 thick gypsum board ul type ulix assembly ul design no.
Ul 521 floor assembly.
406 mm 1 4 76 mm 0 3.
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 2 in.
Estimated range of acoustical performance is based on laboratory test data of similarly constructed assemblies.
Floor mat materials optional floor mat material nom 1 8 in.
See floor and roof topping mixtures ccox category for names of classified companies.
See item 6 this design was evaluated using a load design method other than the.
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.
February 19 1999 ansi approved.
For the most up to date information or assembly options refer to the ul fire resistance directory.
25mm hacker industries inc type firm fill scm 250 quiet qurl 55 025.
Ul standard ul 521 edition 7 standard for heat detectors for fire protective signaling systems edition date.
Use of floor ceiling designs for roof ceiling or reverse.
Fire rated assemblies for multifamily floors have a number of requirements as well as options to consider.
L521 system 4 notes.
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.
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.
Ul bxuv guideinfo section iii 19 includes the following.
Floor topping thickness shall be a min of 1 in.
Floor topping thickness shall be a min of 1 1 4 in.
M521 november 13 2019 unrestrained assembly rating 2 hr.
19 mm thick loose laid o ver the subfloor.
Floor topping mixture bearing the ul classification marking as to fire resistance with a minimum compressive strength of 1500 psi.
19mm hacker industries inc firm fill scm 125 alternate floor mat materials optional floor mat material nom 1 4 in.
For the most up to date fire resistance ratings refer to the ul online certifications directory ul l521.
