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Sheet
Drawing No.
HILTI, Inc.
Date
Scale
1. LIGHTWEIGHT OR NORMAL WEIGHT CONCRETE FLOOR (MINIMUM 2-1/2" THICK) OVER METAL DECKING
ASSEMBLY (2-HR. FIRE-RATING).
2. GYPSUM SHAFT WALL ASSEMBLY (2-HR. FIRE-RATING) TO INCLUDE THE FOLLOWING CONSTRUCTION
FEATURES :
A. "J" SHAPED CEILING RUNNER, MINIMUM 2-1/2" WIDE WITH LEGS OF 1" AND 2" (MINIMUM 24 GA.)
FASTENED TO UNDERSIDE OF DECK WITH STEEL MASONRY ANCHORS, STEEL FASTENERS, OR
WELDS AT LOCATION NOT GREATER THAN 2" FROM ENDS AND MAXIMUM 24" O.C.
B. "C-H" SHAPED STUDS (MINIMUM 2-1/2" WIDE, MINIMUM 25 GA.) CUT 3/8" TO 1/2" LESS IN LENGTH
THAN ASSEMBLY HEIGHT, NESTING IN CEILING RUNNER WITHOUT ATTACHMENT.
C. TWO LAYERS MINIMUM 1/2" THICK FIRE-RATED GYPSUM WALLBOARD "TYPE C" ON FINISHED SIDE
AND MINIMUM 1" COREBOARD CUT MAXIMUM 3/4" LESS IN LENGTH THAN FLOOR CEILING ASSEMBLY.
3. GYPSUM LINER BOARD (MINIMUM 1" THICK) FASTENED TO 2" LEG OF CEILING RUNNER WITH 1-5/8" TYPE
S DRYWALL SCREWS 6" FROM END AND MAXIMUM 12" O.C. (GYPSUM ATTACHED FROM EITHER SIDE OF
RUNNER LEG). GYPSUM LINER CUT TO PROFILE OF DECK (1/8" TO 1/4" GAP). GYPSUM LINER BOARD TO
OVERLAP ONTO WALL ASSEMBLY MINIMUM 5".
4. [OPTIONAL - NOT SHOWN] WHEN SPRAY-APPLIED FIREPROOFING IS USED, CEILING RUNNER MAY BE
SECURED TO DECK WITH Z-SHAPED CLIPS (MIN. 20 GA.) WITH THE FOLLOWING DIMENSIONS : MINIMUM 1"
LONG, BUT NOT EXCEEDING THE WIDTH OF THE WALL, BY 1-1/2" OR 2" LONG UPPER AND LOWER LEGS.
SUPPORT CLIPS SPACED MAXIMUM 24" OC.
5. MINIMUM 1" THICKNESS HILTI 767 SPEED STRIPS COMPRESSED 50%, FLUSH WITH GYPSUM BOARD
SURFACES (SEE NOTE NO. 2 BELOW).
6. MINIMUM 1/8" (WET) THICKNESS HILTI CFS-SP WB FIRESTOP JOINT SPRAY OR HILTI CP 672 SPEED SPRAY
TO COMPLETELY COVER MINERAL WOOL AND OVERLAPPING MINIMUM 1/2" ONTO GYPSUM SHAFT WALL
AND METAL DECK.
NOTES : 1. MAXIMUM WIDTH OF JOINT = 3/4".
2. AS AN ALTERNATE TO HILTI CP 767 SPEED STRIPS, MINERAL WOOL (MIN. 4 PCF DENSITY)
COMPRESSED 50% MAY BE USED.
3. STEEL FLOOR UNITS MAY BE SPRAYED WITH A MIN. 5/16" THICKNESS TO MAX. 1-3/4"
THICKNESS OF UL CLASSIFIED MONOKOTE TYPE MK-6/HY (MANUFACTURED BY W.R. GRACE)
OR TYPE 300 (MANUFACTURED BY ISOLATEK, INT.) FIREPROOFING PRIOR TO OR AFTER
INSTALLATION OF CEILING RUNNERS.
4. WHEN THE STEEL DECK IS COATED WITH FIREPROOFING, HILTI FIRESTOP SPRAY SHALL
OVERLAP THE WALL A MINIMUM 1/2" AND OVERLAP THE FIREPROOFING A MINIMUM 2".
5. AS AN ALTERNATE TO CEILING RUNNER IN ITEM NO. 2, SLOTTED CEILING RUNNERS MAY BE
USED. CONSULT THE UL FIRE RESISTANCE DIRECTORY FOR APPROVED MANUFACTURERS.
HWD
2 of 2
-
ASSEMBLY RATING = 2-HR.
CLASS II MOVEMENT CAPABILITIES - 16% COMPRESSION OR EXTENSION
TOP OF WALL JOINT : GYPSUM SHAFT WALL ASSEMBLY
Tulsa, Oklahoma USA (800) 879-8000
UL/cUL SYSTEM NO. HW-D-0542
0542d
May 07, 2012
HWD0542d.050712