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Division 07 – Thermal and Moisture Protection
OPL Design No. CEJ 314 P
07 84 00 Fire stopping
07 84 53 Building Perimeter Fire stopping
Page 2 of 3
Date Revised: June 20, 2014
©Intertek
Project No: 100141291SAT-007
blockout width may also vary without
restriction.
2.  CURTAIN
WALL
ASSEMBLY:
The
curtain wall assembly shall incorporate
the following construction features:
A.  Mounting Attachment: (Not shown)
Attachment
of
the
curtain
wall
framing to the structural framing
shall be according to the curtain wall
manufacturer’s instructions. When
required, the mounting attachments
to the floor slab shall be connected
to the joint face of the floor slab,
according
to
the
curtain
wall
manufacturer’s
instructions.
Max.
distance
between
mounting
attachments shall be 24 in..
B.  Steel-Stud Framing: Vertical framing
members shall be a min. 3-5/8 in. by
1-5/8 in., 18 GA steel "C" studs
secured in an 18 GA steel track top
and bottom using #6 x 1.25 in. Bugle
head SD PT screws. Vertical framing
shall not exceed a spacing of 24 in.
oc.
C.  Sandwiched Wall Surface: Use a
min. 1/2 in. thick, 48 in. wide by 96
in. long, exterior grade gypsum
wallboard (ASTM C 79), cement
board,
or
fiberglass
sheathed
gypsum wallboard placed over and
secured to framing with min. 1-1/4
in. long Type S drywall screws 8 in.
oc.
D.  Curtain Wall Insulation: Use a nom.
24 in. wide by min. 4 in. thick min. 4
pcf faced or un-faced mineral wool**
batt
insulation
cut
to
size
as
required. The curtain wall insulation
shall completely fill the recess of the
min. 3-5/8 in., by 1-5/8 in., by 18 GA
steel "C" studs.   If the stud cavity is
deeper than 3-5/8 in., use thicker
insulation
to
accommodate
the
additional depth so that the cavity is
full from the front of the stud to the
rear of the stud. Install curtain wall
insulation in each stud cavity so that
min. 6 in. of curtain wall insulation is
above the surface of the perimeter
joint protection and a min. of 6 in. is
below the underside of the floor,
while maintaining the min. 24 in.
continuous
vertical
length
of
insulation in the spandrel region.
The 24 in.  width is fitted tightly
between vertical framing members
filling all studs in the spandrel
region. Because the insulation is
required to be continuous in both
width and length, without butted
joints, use of aluminum foil tape to
seal between the insulation and the
studs is optional. (** Listed with
Intertek)
E. Exterior Curtain Wall Insulation:
(Optional - Not Shown) Expanded
polystyrene foam (EPS) insulation.
The EPS foam boards measure 24
in. wide by 48 in. long by 4 in. thick
with a nominal density of 1 pcf. The
EPS foam is attached to the
sandwiched
wall
surface
using
mechanical fasteners or an adhesive
in accordance with manufacturer’s
recommendations.  Install the EPS
boards in a running bond (brick-like)
pattern
and
staggered
over
sandwiched wall surface (2C) joints.
Apply pressure to the EPS boards to
assist in the bonding process. All
EPS boards must be butted together
with no gaps or voids between them.
Allow a min. of 12 hours before
continuing the application process
when using adhesive. The EPS
boards must be rasped to remove all
irregular seams and establish a
continuous flat surface.
F.  Exterior Curtain Wall Finish: Use
brick and mortar of any type.
Mortar joints not to exceed 7/8 in. .
Secure bricks to wall assembly using
conventional acceptable masonry
techniques.
G. Glass Vision Panels: Glass vision
panels shall be installed to curtain
wall framing according to the curtain