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Division 07 – Thermal and Moisture Protection
OPL Design No. CEJ 310P
07 84 00 Fire stopping
07 84 53 Building Perimeter Fire stopping
Page 3 of 4
Date Revised: June 20, 2014
©Intertek
Project No: 100141291SAT-007
the
curtain
wall
system
manufacturer's guidelines. Use a
min. 1/4 in. thick clear, heat-
strengthened
(HS)
glass
or
tempered glass with a max. width
and height less than the aluminum
framing oc spacing, which allows
the glass to be secured between the
notched shoulder of the aluminum
framing and pressure bar. Panels
are secured with a thermal break
(rubber extrusion), pressure bar
(aluminum extrusion), min. 1/4-20 x
5/8 in. long screws, and a snap face
(aluminum extrusion).
E. Insulation
Reinforcement
Angle:
Place min. 1 in. x 2 in. 20 GA
galvanized steel angle horizontally
in the spandrel area to reinforce the
curtain wall insulation (2H). The 2 in.
leg is placed flush against the
exterior surface of the curtain wall
insulation and the 1 in. dimension is
positioned at the top of the 2 in. leg,
perpendicular to and outward from
the insulation as illustrated. Place a
min. of 3 angles in each spandrel
cavity
between
vertical
framing
members. Two angles are required
to be spaced a max. 6 in. oc in the
perimeter fire barrier region, with the
top angle centered 1 in. above the
floor. Outside of the perimeter fire
barrier region, the spacing of these
reinforcement angles is a max. 18
in. oc On both ends of each angle,
cut the 1 in. leg of the angle 2 in.
from the end and fold down to form
a slot that is slid onto the flange of
the Clip Angle (2F).
F. Clip Angles: Position min. 2 in. wide
Clip Angles having 2 in. long flange
dimensions, constructed of min. 18
GA. galvanized steel, onto the I-
mullions at the required elevation
locations
of
the
Insulation
Reinforcement Angles (2E). The
Clip Angles are secured to the web
of the I- mullion with a min. of two 1
in. No. 10 self-tapping sheet metal
screws placed on the horizontal
centerline of the flange adjacent to
the I-mullion, 1/2 in. from each end.
G. Insulation Retaining Screws: In the
field of the curtain wall insulation
between framing covers (2I) attach
curtain wall insulation (2H) to the
insulation reinforcement angle (2E)
with min. 3 in. long No. 8 bugle head
self-tapping screws fitted with min.
1-1/2
in.
diameter
steel
clinch
shields or self-locking washer clips.
These are spaced a max. 12-3/4 in.
oc and a max. 4 in. on each side of
vertical seams. Where the framing
covers (2I) overlap onto the curtain
wall insulation (2H) secure framing
covers
(2I)
and
curtain
wall
insulation (2H) to the insulation
reinforcement angle (2E) with min. 5
in. long No. 10 bugle head self-
tapping screws and min. 1-1/2 in.
diameter steel clinch shields or self-
locking washer clips in accordance
with details in 2I.
H. Curtain Wall Insulation: A nom. 2 in.
thick, 8pcf density mineral wool batt
insulation**, faced on one side with
aluminum foil scrim (vapor retarder)
which faces the room interior, is
installed to fill all cavities of the
spandrel
region
between
the
framing. The batt is to be fitted
tightly to the framing, and is secured
to the Insulation Reinforcement
Angle (2E) with Insulation Retaining
Screws and min. 1-1/2 in. diameter
steel clinch shields or self-locking
washer clips. (2G). A min. 3 in. air
space
is
created
between
the
insulation and panel. All meeting
edges of insulation are sealed with
nom. 4 in. wide pressure sensitive
aluminum foil faced tape centered
over the junction so that approx. 2
in. of tape covers each edge of the
adjacent insulation. The 36 in. wide
batts shall be installed with no
vertical seams. Horizontal seams