Page text

Sheet
Drawing No.
HILTI, Inc.
Tulsa, Oklahoma USA (918) 252-6000
Date
Scale
1. GYPSUM WALL ASSEMBLY (UL/cUL CLASSIFIED U400 OR V400 SERIES) (1-HR. OR 2-HR. FIRE-RATING)
(2-HR. SHOWN).
2. [NOT SHOWN] STEEL STUDS TO BE MINIMUM 3-1/2" WIDE. OPENING TO BE COMPLETELY "FRAMED-OUT"
WITH STUD MATERIAL.
3. MAXIMUM 20" x 2" STEEL CABLE RACK.
4. MAXIMUM 4" HIGH CABLE LOADING DEPTH TO CONSIST OF ANY OF THE FOLLOWING :
A. MAXIMUM 750 KCMIL TYPE RHW/RHH POWER CABLE OR WITH PVC JACKET.
B. MAXIMUM 3/C NO. 12 AWG METAL-CLAD CABLE.
C. MAXIMUM 300 PAIR NO. 24 AWG TELEPHONE CABLE WITH PVC JACKET.
D. MAXIMUM 24 FIBER, FIBER-OPTIC CABLE WITH PVC JACKET.
E. MAXIMUM 7/C NO. 12 AWG CABLE WITH PVC JACKET.
F. MAXIMUM 3/C NO. 2/0 AWG COPPER CONDUCTOR PVC JACKETED ALUMINUM CLAD OR STEEL CLAD
TECK 90 CABLE.
G. ANY UL CLASSIFIED ARMORED OR METAL CLAD CABLE.
5. HILTI CP 675T FIRESTOP BOARD CUT TO OVERLAP OPENING MINIMUM 1" ON ALL SIDES. TWO PIECES
POSITIONED AROUND CABLES/CABLE RACK WITH CUT EDGES TIGHTLY BUTTED.
6. FASTEN HILTI CP 675T FIRESTOP BOARD TO FRAMING MATERIAL UTILIZING 2-5/8" LONG STEEL SCREWS
WITH 1-1/4" DIAMETER STEEL WASHERS AT EACH CORNER OF FIRESTOP BOARD AND MAXIMUM 8" C/C
AROUND PERIMETER OF FIRESTOP BOARD ON BOTH SIDES OF WALL (SEE NOTE NO. 2).
7. MINIMUM 1" DEPTH HILTI FIRESTOP PUTTY APPLIED BETWEEN FIRESTOP BOARD AND CABLES/ CABLE
RACK.
8. HILTI CP 619T FIRESTOP PUTTY ROLL TO BE CENTERED OVER SEAM ON BOTH SIDES OF WALL.
NOTES : 1. MAXIMUM SIZE OF OPENING = 24" x 36".
2. BOTTOM PIECE OF HILTI CP 675T FIRESTOP BOARD CUT TO FOLLOW CONTOUR OF
CABLE RACK WTIH A MINIMUM 0" TO MAXIMUM 1" SPACE BETWEEN BOARD AND CABLE
RACK. TOP PIECE CUT WITH A MINIMUM 1/8" TO MAXIMUM 1" SPACE BETWEEN BOARD
AND CABLE RACK AND A MINIMUM 1/4" TO MAXIMUM 1" SPACE BETWEEN BOARD AND
CABLES.
3. ANNULAR SPACE BETWEEN CABLE RACK AND PERIPHERY OF OPENING = MINIMUM 0",
MAXIMUM 34".
4. APPLY MINIMUM 1/2" BEAD HILTI FIRESTOP PUTTY AT POINT OF CONTACT.
5. PRIOR TO FASTENING HILTI CP 675T FIRESTOP BOARD TO WALL ASSEMBLY, APPLY A
MINIMUM 1/8" WIDE BEAD OF HILTI FS-ONE INTUMESCENT FIRESTOP SEALANT OR
MINIMUM 1" WIDE CP 619T FIRESTOP PUTTY ROLL AROUND PERIMETER OF EACH BOARD.
WL
2 of 2
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UL/cUL SYSTEM NO. W-L-4048
F-RATING = 1 OR 2-HR.
T-RATING = 1/4-HR.
4048b
Sep. 13, 2005
WL4048b.091305