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I. Framing Covers - Curtain Wall Insulation* -- Min 8 in. wide strips cut from the same min 2 in. thick mineral wool batt insulation used for the
curtain wall insulation (Item 2H). Framing covers to be centered over mullions, and secured to the spandrel panel perimeter angles (Item 2E)
with cup head weld pins (Item 2J) spaced max 12 in. OC. Where more than one spandrel panel occurs between vertically separated vision
panels, the horizontal transom between spandrel panels shall also be covered with an 8 in. wide framing cover in the same manner as on the
vertical mullions. Framing covers on mullions to abut the mineral wool batt safing material (Item 3A) above and below floor.
ROXUL INC -- RHT-80
J. Weld Pin -- No. 12 gauge galv steel weld pin with nom 1-3/16 in. diam galv steel cup head. Cup head weld pins provided in two lengths. One
length to be equal to thickness of curtain wall insulation (Item 2H) and second length to be equal to thickness of curtain wall insulation plus
thickness of framing cover (Item 2I). Cup head weld pins inserted through curtain wall insulation and mullion covers and welded to spandrel
panel perimeter angles at max OC spacings referenced in Items 2H and 2I.
3. Perimeter Fire Containment System -- The perimeter fire containment system shall incorporate the following construction features:
A. Forming Material* -- Nom 4 in. thick, mineral wool batt safing material to be installed in continuous pieces between mullion clips. Safing
material to be cut to a min 4-1/2 in. width and stacked to a thickness which is at least 25 percent greater than the width of the linear gap
between the curtain wall and the edge of the concrete floor slab. The safing material is compressed and inserted cut-edge-first into the linear
gap such that its top surface is recessed 1/4 in. from the top-surfaces of the floor assembly and such that it is friction-fit between mullion
mounting angles. Additional pieces of safing material to be friction-fit into space between mullion mounting clips at each mullion location with
top edges of mullion clips covered with a min 1/4 in. thickness of compressed safing material.
ROXUL INC -- SAFE
B. Fill, Void or Cavity Material* -- Min 1/4 in. thickness of fill material applied over top of forming material.assembly.
HILTI CONSTRUCTION CHEMICALS, DIV OF HILTI INC -- CP 604 Self-Leveling Firestop Sealant
*Bearing the UL Classification Mark
System No. CW-S-2029
CWS 2029
Reproduced by HILTI, Inc. Courtesy of
Underwriters Laboratories, Inc.
December 5, 2002
Integrity Rating - 2 Hr
Insulation Rating - 1/4 Hr
Linear Opening Width - 8 In. Max