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1. Wall Assembly —
The 1 or 2 hr fire-rated gypsum board/stud wall assembly shall be constructed of
the materials and in the manner described in the individual U300, 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 either wood studs or steel channel studs. Wood studs to
consist of nom 2 by 4 in. (51 by 102 mm) lumber spaced max 16 in. (406 mm) OC.
Steel studs to be min 3-1/2 in. (89 mm) wide and spaced max 24 in. (610 mm) OC.
B. Gypsum Board* —
5/8 in. (16 mm) thick, 4 ft (1.22 m) wide with square or tapered edges. The
gypsum board type, thickness, number of layers, fastener type and sheet
orientation shall be as specified in the individual U300, U400 or V400 Series
Designs in the UL Fire Resistance Directory.
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* — Sleeve - Smooth steel
sleeve device incorporating flat washers secured by sliding compression
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 device is 1-1/4, 2-7/16 and 4‑1/2 in. (32, 62 and 114 mm),
respectively.
UNIQUE FIRE STOP PRODUCTS INC — Smooth Sleeve
B. Firestop Device* — End Cap – End cap
device incorporating an octagonal cover plate with a set screw 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
Smooth Sleeve devices (Item 2A). End cap devices installed on both sides of wall
in accordance with accompanying instructions.
UNIQUE FIRE STOP PRODUCTS
INC — Smooth Endcap
*Bearing the UL
Classification Mark |
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