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Sheet
Drawing No.
HILTI, Inc.
Tulsa, Oklahoma USA (800) 879-8000
Date
Scale
1. CONCRETE WALL ASSEMBLY (2-HR. FIRE-RATING) :
A. LIGHTWEIGHT OR NORMAL WEIGHT CONCRETE WALL (MINIMUM 5" THICK).
B. ANY UL/cUL CLASSIFIED SOLID OR FILLED CONCRETE BLOCK WALL.
2. MAXIMUM 20" WIDE STEEL CABLE RACK MAY BE CONTINUOUS OR DISCONTINUOUS THROUGH WALL
ASSEMBLY. WHEN THE RACK IS CONTINUOUS, THE T-RATING IS 0-HR.
3. [OPTIONAL] MINIMUM 1" x 3" x 0.039" ZINC COATED, OR PAINTED, STEEL ANGLES FRICTION FITTED TO
FRAME ALL FOUR SIDES OF OPENING ON EACH SIDE OF WALL. STEEL FASTENERS MAY BE USED TO
SECURE ANGLE TO WALL.
4. CABLES TO BE A COMBINATION OF ANY OF THE FOLLOWING :
A. MAXIMUM 750 KCMIL SINGLE CONDUCTOR POWER CABLE WITH PVC JACKET.
B. MAXIMUM 300 PAIR NO. 24 AWG TELEPHONE CABLE WITH PVC JACKET.
C. MAXIMUM 1/2" DIAMETER FIBER-OPTIC CABLE (24 FIBER).
5. HILTI CFS-BL FIRESTOP BLOCK OR HILTI FS 657 FIRE BLOCK (2" THICK x 8" WIDE x 5" DEEP,
REFERENCE : FRONT VIEW) FIRMLY PACKED AND CENTERED WITHIN THE OPENING. EITHER ONE OR A
COMBINATION OF BLOCK TYPES MAY BE USED.
NOTES : 1. MAXIMUM SIZE OF OPENING = 24" x 16".
2. CABLES TO FILL MAXIMUM 35% OF CROSS-SECTIONAL AREA OF OPENING.
3. ANNULAR SPACE = MINIMUM 0", MAXIMUM 8".
4. APPLY HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT, CP 618 FIRESTOP PUTTY STICK,
OR CP 620 FIRE FOAM, INTO ANY VOID THAT MAY EXIST (AROUND PENETRANTS, INTO
INTERSTICES OF CABLES, OR BETWEEN FIRESTOP/FIRE BLOCKS), TO MAXIMUM EXTENT
POSSIBLE.
5. WHEN ANNULAR SPACE EXCEEDS 4" TO THE PERIPHERY, A NOMINAL 2" x 2" STEEL WIRE
MESH (16 GA.) SHALL BE ATTACHED TO BOTH SIDES OF THE WALL BY MEANS OF 1/4"
DIAMETER x 1" LONG STEEL CONCRETE ANCHORS AND 1-1/2" DIAMETER FENDER WASHERS
(SPACED MAXIMUM 8" C/C). STEEL WIRE MESH SHALL BEGIN MAXIMUM 2-1/2" FROM THE
PENETRANT AND OVERLAP MINIMUM 3" BEYOND THE PERIPHERY OF THE OPENING.
WJ
2 of 2
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UL/cUL SYSTEM NO. W-J-3074
F-RATING = 2-HR.
T-RATING = 0-HR. OR 1/2-HR.
CABLE BUNDLE THROUGH CONCRETE WALL OR BLOCK WALL ASSEMBLY
3074d
Jan. 10, 2012
WJ3074d.011012