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Sheet
Drawing No.
HILTI, Inc.
Date
Scale
1. GYPSUM WALL ASSEMBLY (UL/cUL CLASSIFIED U400, V400, OR W400 SERIES) (1-HR., 2-HR., 3-HR., OR
4-HR. FIRE-RATING) (4-HR. SHOWN) TO INCLUDE THE FOLLOWING CONSTRUCTION FEATURES :
A. STEEL STUDS TO BE MINIMUM 3-5/8" WIDE (SPACED MAXIMUM 24" OC).
B. NOMINAL 1/2" THICK GYPSUM WALLBOARD. TYPE, NUMBER OF LAYERS, AND SHEET ORIENTATION
AS SPECIFIED IN THE INDIVIDUAL UL DESIGN.
2. OPENING TO BE FRAMED OUT WITH ADDITIONAL FRAMING MEMBERS.
3. PENETRATING ITEMS (MAX. QTY. = 2) TO CONSIST OF ANY COMBINATION OF THE FOLLOWING :
A. MAXIMUM 12" NOMINAL DIAMETER STEEL PIPE (SCHEDULE 10 OR HEAVIER).
B. MAXIMUM 6" NOMINAL DIAMETER COPPER PIPE OR TUBING.
C. MAXIMUM 6" NOMINAL DIAMETER STEEL CONDUIT.
D. MAXIMUM 4" NOMINAL DIAMETER EMT.
4. [OPTIONAL] NOMINAL 1-1/2" THICK GLASS-FIBER PIPE INSULATION (MIN. 3.5 PCF DENSITY).
5. MINIMUM 6" LONG JACKET FORMED OF MINIMUM 0.010" THICKNESS STEEL SHEET SECURED IN PLACE
WITH MINIMUM 1/2" WIDE STAINLESS STEEL HOSE CLAMP LOCATED AT CENTER OF JACKET. ENDS OF
THE JACKET TO OVERLAP BY A MINIMUM 2" AND EXTEND 1" INTO OPENING.
6. HILTI CFS-BL FIRESTOP BLOCK OR HILTI FS 657 FIRE BLOCK (2" THICK x 8" WIDE x 5" DEEP [FOR 1-HR.
OR 2-HR. ASSEMBLIES] OR 2" THICK x 5" WIDE x 8" DEEP [FOR 3-HR. OR 4-HR. ASSEMBLIES],
REFERENCE : FRONT VIEW) FIRMLY PACKED WITHIN OPENING. EITHER ONE OR A COMBINATION OF
BLOCK TYPES MAY BE USED.
NOTES : 1. MAXIMUM AREA OF OPENING = 480 SQ. IN., WITH A MAXIMUM DIMENSION OF 24".
2. ANNULAR SPACE BETWEEN PIPES, CONDUITS, OR TUBING AND PERIPHERY OF OPENING =
MINIMUM 1-1/2", MAXIMUM 4".
3. ANNULAR SPACE BETWEEN PIPES, CONDUITS, OR TUBING = MINIMUM 4", MAXIMUM 6-3/4".
4. ANNULAR SPACE BETWEEN INSULATED PIPES AND PERIPHERY OF OPENING = NOMINAL
1-1/2".
5. APPLY HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT OR HILTI CP 618 FIRESTOP PUTTY
STICK IN ANY VOID THAT MAY EXIST AROUND PENETRANTS OR FIRESTOP/FIRE BLOCKS.
6. IF THE ANNULAR SPACE IS GREATER THAN 4", THEN ATTACH A STEEL WIRE MESH
(NOMINAL 2" SQUARES, NO. 16 SWG) WITH 1/4" HILTI TOGGLER BOLTS WITH 1-1/2"
DIAMETER FENDER WASHERS (SPACED MAXIMUM 8" C/C) OR ATTACHED TO STEEL STUDS
WITH STEEL SCREWS AND 1-7/16" FENDER WASHERS (SPACED MAXIMUM 6" C/C) ON BOTH
SIDES OF WALL. STEEL WIRE MESH SHALL BEGIN MAXIMUM 2-1/2" FROM THE PENETRANT
AND OVERLAP MINIMUM 3" BEYOND THE PERIPHERY OF THE OPENING.
WL
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2 of 2
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Jan. 12, 2012
UL/cUL SYSTEM NO. W-L-8015
F-RATING = 1-HR., 2-HR., 3-HR., OR 4-HR.
T-RATING = 0-HR.
tiUMNR~KMNNONO
MULTIPLE PENETRANTS THROUGH GYPSUM WALL ASSEMBLY
Tulsa, Oklahoma USA (800) 879-8000