alternative materials design and method approval.pdfMarch 4, 2015
City of Edmonds
Development Services Department
Building Division
121 5th Ave N
Edmonds, WA 98020
Attn: Chuck Miller, Plans Examiner
Dear Mr. Miller,
0 , 3E! UB
MAP`
E'fl,A,LNN(,1,
O"N (3IF" El��,,U,,f,(,,)'u,tlf,�,,�,�,,',,,', ,
This letter is our request to deviate from a UL listed fire rated wall assembly and consider the
existing condition per the alternatives materials, design and methods, IBC section 104.11. The
proposed bearing walls along the exterior of the building are required to be fire rated same as
the floor/ceiling assembly for the 2 -hr separation between the B and R occupancies. However,
the existing exterior CMU wall provides 2 hours protection on the exterior side so we are
proposing the required 2 -hr fire rating only be provided on the inside face. The wall type we are
proposing is based on UL design U301. Please see the attached submittals for your review,
comment and approval.
Sincerely
Nathdn"' Woods
X 011 i11,1011111
N i/�u �,,.., ! 4
"J,
q
W
t 425 778,1530 21911 76(h Ave W, Suite 210 Incorporated in the State ofWashington
Edmonds WA 98026 www tgbarchitpcts.cow
f 425,77 J"