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Sheet
Drawing No.
HILTI, Inc.
Date
Scale
3. MINIMUM 1" WIDE PAINTED OR GALVANIZED Z-SHAPED CLIPS OR CHANNELS (MIN. 16 GA.) SIZED TO
EXTEND THROUGH THE THICKNESS OF FIREPROOFING, WITH 1-1/2" UPPER AND LOWER LEGS (SPACED
MAX. 16" O/C). LEG OF CLIP FASTENED TO BOTTOM OF BEAM WITH STEEL FASTENERS OR WELDS
(SPACED MAXIMUM 16" O/C) PRIOR TO INSTALLATION OF FIREPROOFING. CLIPS TO EXTEND FROM
STEEL SUPPORT BEAM FLUSH WITH NON-BEAM FACE OF WALL.
4. TWO LAYERS OF 5/8" THICK GYPSUM BOARD (GLASS MAT FACED - MOISTURE RESISTANT) APPLIED TO
BOTTOM OF STEEL ATTACHMENT CLIPS. BOARDS CUT TO LENGTH OF STEEL CLIPS AND SECURED TO
EACH CLIP. BASE LAYER ATTACHED TO THE CLIPS USING 1" LONG TYPE S BUGLE-HEAD STEEL SCREWS
(SPACED MAX. 12" O/C), MAXIMUM 1" FROM EACH END. OUTER LAYER ATTACHED TO CLIPS USING 1-5/8"
LONG TYPE S BUGLE-HEAD STEEL SCREWS (SPACED MAXIMUM 12" O/C), MAXIMUM 1" FROM EACH END.
BUTTED JOINTS ARE CENTERED OVER CLIPS AND JOINTS IN BASE AND OUTER LAYERS TO BE OFFSET.
JOINTS AND SCREW HEADS IN OUTER LAYER COVERED WITH TWO COATS OF JOINT COMPOUND.
5. UL/cUL CLASSIFIED MONOKOTE TYPE MK-6/HY (MANUFACTURED BY W.R. GRACE) OR TYPE 300
(MANUFACTURED BY ISOLATEK, INT.) FIREPROOFING SPRAYED ON DECK AND STEEL BEAM TO THE
THICKNESS SPECIFIED IN THE INDIVIDUAL D700 SERIES DESIGN. FIREPROOFING TO COMPLETELY FILL
FLUTES ABOVE THE STRUCTURAL STEEL BEAM, COVER FURRING MEMBER TO THE MINIMUM THICKNESS
OF MATERIAL REQUIRED ON THE FLANGES OF STEEL BEAM AND COMPLETELY FILLING THE SPACE
BETWEEN THE CLIPS ABOVE THE WALL (SEE NOTES BELOW).
6. GYPSUM WALL ASSEMBLY (UL/cUL CLASSIFIED U400 OR V400 SERIES) (1-HR. OR 2-HR. FIRE-RATING)
(2-HR. SHOWN).
7. CEILING RUNNER (MIN. 25 GA., WITH 1-1/4" TO 3" FLANGES) SECURED TO STEEL FURRING WITH STEEL
FASTENERS OR WELDS AT MAXIMUM 24" ON CENTER, PRIOR TO INSTALLATION OF FIREPROOFING.
8. STEEL STUDS (MINIMUM 3-1/2" WIDE) CUT 1/2" TO 3/4" LESS IN LENGTH THAN ASSEMBLY HEIGHT,
NESTING IN CEILING RUNNER WITHOUT ATTACHMENT.
9. HILTI CP 767 SPEED STRIPS OR MINERAL WOOL SAFING (MIN. 4 PCF DENSITY) COMPRESSED 50% AND
INSERTED INTO JOINT, FLUSH WITH BOTH SIDES OF WALL.
10. MINIMUM 1/8" (WET) THICKNESS HILTI CFS-SP WB FIRESTOP JOINT SPRAY OR HILTI CP 672 SPEED
SPRAY TO COMPLETELY COVER MINERAL WOOL, OVERLAPPING MINIMUM 1/2" ONTO GYPSUM WALL
AND MINIMUM 2" ONTO FIREPROOFING.
HWD
2 of 2
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ASSEMBLY RATING = 1-HR. OR 2-HR.
L-RATING AT AMBIENT = LESS THAN 1 CFM/LIN. FT.
L-RATING AT 400°F = LESS THAN 1 CFM/LIN. FT.
CLASS II OR III MOVEMENT CAPABILITIES - 50% COMPRESSION OR EXTENSION
TOP OF WALL JOINT : GYPSUM WALL ASSEMBLY
Tulsa, Oklahoma USA (800) 879-8000
NOTES : 1. THE TOTAL THICKNESS OF ADDITIONAL FIREPROOFING TO BE APPLIED TO THE WEB OF
THE STEEL BEAM ON EACH SIDE OF THE WALL. APPLY 13/16" AND 1-1/2" THICKNESS FOR
1-HR. OR 2-HR. WALLS.
2. AS AN ALTERNATE TO FIREPROOFING ABOVE THE BEAM, HILTI CP 777 SPEED PLUGS
MAY BE USED. WHEN SPEED PLUGS ARE USED, HILTI CFS-SP WB FIRESTOP JOINT
SPRAY OR HILTI CP 672 SPEED SPRAY SHOULD BE APPLIED TO COVER THE PLUG AND
OVERLAPPING MINIMUM 1/2" ONTO METAL DECK AND MINIMUM 2" ONTO FIREPROOFING.
0635a
UL/cUL SYSTEM NO. HW-D-0635
Mar. 24, 2011
HWD0635a.032411