HomeMy WebLinkAboutSTAMPED FIRE WALL LETTER - 22-00699 - Mountain Archery - AdditionR&V
ASSOCIATES
Architecture &
Interior Design
Phone (208) 359-2309
Fax (208) 359-2271
1152 Bond Avenue
Suite A
Rexb,irg, ID 83440
www.irwa.com
Brett Stoddard and Cody Jones
City of Rexburg
Building Department
RE: Mountain Archery Fire Wall
Brett and Cody,
In order to form the 2 hour separation from the existing building to the new
construction, find the attached details that will allow the fire wall to act as intended for
the designed purpose. (see attached details) This assembly will need to cover the entire
portion of wall that the existing building and the new construction connect, from floor to
roof deck.
In order to create the assembly, there will need to be some of the newly
constructed walls to be removed to create access for the layers or dry wall and hat
channel to be attached. Any penetration through this assembly will need to be closed with
approved fire caulking.
Sincerely,
Ryan Malm
Qualifications Certified By: N.C.A.R.B. - National Council of Architectural Registration Boards
METAL CLAD EXTERIOR WALLS
GA FILE NO. WP 9205 1 GENERIC
GYPSUM WALLBOARD, GYPSUM SHEATHING, RIGID FURRING
CHANNELS, STEEL GIRTS, STEEL WALL PANELS
EXTERIOR SIDE: Base layer 518" type X gypsum sheathing applied at right angles to
horizontal, 6" to 12" deep, "Z" or "C" shaped, 0.056" to 0.120" thick steel gifts 48" o.c.
with 1 114" Type S-12 drywall screws 8" o.c. Second layer 5/8" type X gypsum sheathing
applied at right angles to girls with 1 518" Type S-12 drywall screws 8" o.c. Vertical joints
offset 24" from base layer joints.Face layer minimum 26 gage steel exterior wall panels
applied at right angles to girls with 2" long, No. 12-14 self -drilling screws 12" o.c. Joints
offset 6" from gypsum sheathing joints.
INTERIOR SIDE: Base layer 5/8" type X gypsum wallboard applied parallel or at right
angles to rigid furring channels 24" o.c. with 1" Type S drywall screws 24" o.c. Furring
channels attached at right angles to girls with two 318" long, Type S-12 panhead screws
at each girt. Face layer 518" type X gypsum wallboard applied parallel or at right angles to
channels with 1 5/8" Type S drywall screws 12" o.c. Joints offset 24" from base layer
joints. (LOAD -BEARING)
Proposed GA no. Wall
(2) LAYERS
er s/a'
TTPE -
NEW CONSTRUCTION
EXISTING
METAL SMO
-- HAT
---L 2A'
O.G.
FIRE WALL - 2 HOUR
GA FILE NO. WID 3206 EXISTING IWILDINO
2 HOUR
FIRE
Thickness: Varies
Approx. Weight: 9.5 psf
Fire Test: UL R7406, R4024;
96NK36592; 8-23-99;
UL Design V421
NEW HAT
Z:�] 0 ANNCL 24'
O.O. IN
VALLEYS OF
EXISTING
SIDING
A. McFARLAND AR-2561
�- ExISTINa
SPACE
SPACE
MARCH 21, 2023
f21 LAYERS EXISTWO
Or METAL STATE OF IDAHO
TYPE 'X' WALLING
WALL
Proposed construction gypsum board to be attached as per GA file description.