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.
Ul 521 floor assembly.
One layer 5 8 thick gypsum board ul type ulix assembly ul design no.
Use of floor ceiling designs for roof ceiling or reverse.
See item 6 this design was evaluated using a load design method other than the.
Finish rating 91 or 98 min.
M521 november 13 2019 unrestrained assembly rating 2 hr.
For the most up to date fire resistance ratings refer to the ul online certifications directory ul l521.
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.
See floor and roof topping mixtures ccox category for names of classified companies.
Ul bxuv guideinfo section iii 19 includes the following.
February 19 1999 ansi approved.
L521 system 4 notes.
406 mm 1 4 76 mm 0 3.
Floor topping thickness shall be a min of 1 1 4 in.
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.
Estimated range of acoustical performance is based on laboratory test data of similarly constructed assemblies.
Floor topping thickness shall be a min of 1 1 2 in.
25mm hacker industries inc type firm fill scm 250 quiet qurl 55 025.
Floor mat materials optional floor mat material nom 1 8 in.
Ul standard ul 521 edition 7 standard for heat detectors for fire protective signaling systems edition date.
Floor topping mixture bearing the ul classification marking as to fire resistance with a minimum compressive strength of 1500 psi.
19 mm thick loose laid o ver the subfloor.
6mm thick loose laid over the subfloor.
Discover monokote products ul designs thickness and more about floor assemblies.
19mm hacker industries inc firm fill scm 125 alternate floor mat materials optional floor mat material nom 1 4 in.
Refer to the ul fire resistance directory for information regarding product orientation and fastening requirements.
Fire rated assemblies for multifamily floors have a number of requirements as well as options to consider.
