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1. Wall Assembly — The 1, 2, 3 or 4 hr fire-rated
gypsum board/steel stud wall assembly shall be constructed of the materials and
in the manner specified in the individual U400 or V400 Series Wall and Partition
Designs in the UL Fire Resistance Directory and shall include the following
construction features:
A. Studs — Wall framing shall consist of steel
channel studs. Steel studs to be min 3‑1/2 in. (89 mm) wide and spaced max 24
in. (610 mm) OC.
B. Gypsum Board* — Multiple layers of min 1/2 in.
(13 mm) thick gypsum board. The gypsum board type, thickness, number of layers
and orientation shall be as specified in the individual Wall and Partition
Design.
The hourly F Rating of the firestop system is
equal to the hourly fire rating of the wall assembly in which it is installed.
2. Firestop System —
The firestop system shall consist of the following:
A. Firestop Device* —
Threaded steel sleeve device incorporating flat washers secured by threaded
couplers. Device shall be installed in accordance with the accompanying
installation instructions. Device provided in nom 1, 2 and 4 in. (25, 51 and 102
mm) diam sizes. Max diam of opening in wall for nom 1, 2 and 4 in. (25, 51 and
102 mm) diam devices is 1-1/4, 2-7/16 and 4-1/2 in. (32, 62 and 114 mm),
respectively.
UNIQUE FIRE STOP
PRODUCTS INC — Threaded Sleeve
A1. Firestop Device* —
(Not Shown) — As an alternate to the threaded sleeve device in Item 2A, threaded
steel sleeve halves incorporating split nuts and split washers sized to fit the
specific diam of the opening may be used. Device shall be installed in
accordance with the accompanying installation instructions. Device provided in
nom 1, 2 and 4 in. (25, 51 and 102 mm) diam sizes. Max diam of opening in wall
for nom 1, 2 and 4 in. (25, 51 and 102 mm) diam device is 1-1/4, 2-7/16 and
4-1/2 in. (32, 62 and 114 mm),
respectively.
UNIQUE FIRE STOP
PRODUCTS INC — Split Sleeve
B. Firestop Device* —
End Cap – End cap device incorporating an octagonal cover plate with a
threaded coupling provided with an intumescent putty fill. Device provided in
nom 1, 2 and 4 in. (25, 51 and 102 mm) diam sizes for use with nom 1, 2 and 4
in. (25, 51 and 102 mm) diam Threaded Sleeve (Item 2A) or Split-Sleeve (Item
2A1) devices. End cap devices installed on both sides of wall in accordance with
accompanying instructions.
UNIQUE FIRE STOP PRODUCTS
INC — Threaded Endcap
*Bearing the UL Classification Mark |
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