Page text

Sheet
Drawing No.
HILTI, Inc.
Date
Scale
1. GYPSUM WALL ASSEMBLY (UL/cUL CLASSIFIED U300, U400, V400, OR W400 SERIES) (1-HR. OR 2-HR.
FIRE-RATING) (2-HR. SHOWN) TO INCLUDE THE FOLLOWING CONSTRUCTION FEATURES :
A. [NOT SHOWN] WOOD STUDS TO CONSIST OF NOMINAL 2" x 4" LUMBER (SPACED MAXIMUM 16" OC).
STEEL STUDS TO BE MINIMUM 2-1/2" WIDE (SPACED MAXIMUM 24" OC).
B. NOMINAL 5/8" THICK GYPSUM WALLBOARD. TYPE, NUMBER OF LAYERS, AND SHEET ORIENTATION
AS SPECIFIED IN THE INDIVIDUAL UL DESIGN.
2. PENETRATING ITEM TO BE ONE OF THE FOLLOWING (PIPE MAY BE INSTALLED AT AN ANGLE NOT
GREATER THAN 45° FROM PERPENDICULAR) :
A. MAXIMUM 2" NOMINAL DIAMETER STEEL PIPE (SCH 10 OR HEAVIER).
B. MAXIMUM 2" NOMINAL DIAMETER CAST OR DUCTILE IRON PIPE.
C. MAXIMUM 2" NOMINAL DIAMETER COPPER PIPE OR TUBING.
3. MINIMUM 1" TO MAXIMUM 1-1/2" THICK GLASS-FIBER (3.5 PCF DENSITY) PIPE INSULATION OR NOMINAL
1" OR 1-1/2" THICK CALCIUM SILICATE PIPE INSULATION.
CONFIGURATION A
4. MINIMUM 1/2" BEAD HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT APPLIED AT PIPE
INSULATION/GYPSUM INTERFACE.
CONFIGURATION B
4. MINIMUM 5/8" DEPTH HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT.
5. MINIMUM 1/2" BEAD HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT APPLIED AT PIPE
INSULATION/GYPSUM INTERFACE.
NOTES : 1. DIAMETER OF OPENING OF OPENING = 6".
2. ANNULAR SPACE = MINIMUM 0", MAXIMUM 7/8".
3. WHEN PIPE IS INSTALLED PERPENDICULAR TO WALL, INSULATION MAY HAVE
CONTINUOUS POINT OF CONTACT.
4. WHEN CALCIUM SILICATE PIPE INSULATION IS USED, SECURE INSULATION TO PIPE WITH
STAINLESS STEEL BANDS OR MINIMUM 8 AWG STAINLESS STEEL WIRE AT MAX. 12" O.C.
WL
5274b
2 of 2
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UL/cUL SYSTEM NO. W-L-5274
F-RATING = 1-HR. OR 2-HR.
T-RATING = 0-HR., 1-1/2-HR., OR 1-3/4-HR.
L-RATING AT AMBIENT = 4 CFM/SQ FT
L-RATING AT 400°F = LESS THAN 1 CFM/SQ FT
INSULATED PIPE THROUGH GYPSUM WALL ASSEMBLY
Tulsa, Oklahoma USA (800) 879-8000
Apr. 02, 2012
WL5274b.040212