EFCO S5900 Structural Glazed - Manual (Page 10)

EFCO CORPORATION 6/2012 PART NO. Y354 Page 10 of 23
Series 5900 Silicone Structural Glazed Curtain Wall Installation
Backer rod & sealant at
top of lower cover
Backer rod at
pressure plate
expansion joint
PRESSURE
PLATE SCREWS
SEALANT AT
MULL JOINT
2
1/
2"
COVE
R DI
MEN
S
IO
N
CO
V
E
R DI
M
E
NSI
O
N
P
R
ES
SU
RE BA
R
D
IM
.
P
R
ES
SUR
E
BA
R
DI
M
.
MU
L
L
D
IM.
MU
L
L
D
IM.
3 1/
2"
M
A
X.
2"
1
/2
" E
XP.
J
T
.
4"
R
E
F.
1/
2"
1/
2"
JT.
1"
4 1
/2"
SP
LI
C
E
2"
2"
1"
1" MIN.
V: Vertical Splice Applications
Vertical Splice Joints
A.) Space vertical mullion expansion joints per “APPROVED” shop drawings and in
conjunction with SSG splice locations.
B.)
Keep in mind that spacing may vary with job site temperature. On multiple stacked
applications, key horizontals must be installed to establish grades regardless of
expansion joint dimension.
C.) Splice joints should occur at spandrel areas.
D.) Mullion splice joints for this system are not
designed to compensate for varying floor
levels. (Reference “APPROVED”
shop drawings for allowable
adjustment, i.e., anchors.)
E.) The splice joint width should be
based on sealant movement
capabilities and the following
formula.
F.) Where head clearance is
insufficient to allow top mullions
to be lifted over the splice sleeve, a
retractable sleeve will be used. The
sleeve is taped in the top mullion
and dropped to the stop screw in
the mullion below.
G.) Do not match drill anchors until a
check of expansion joints and wall
installation is performed.
Linear expansion for aluminum in
inches = Length X F
(temperature degrees difference
in Fahrenheit) X .0000129.
Note: All anchors must be fixed
before glazing begins.
Note: When the mullion splice is
shop installed in the lower
mullion, screws will be used
in the standard location as
shown.
Erector Note: Apply no screws below splice
in the upper pressure plate.
Attach splice sleeve to
upper mullion with (2)
#10-12 X ¾” PLFHSMS.
Note: SSG Vertical Splice Locations EFCO
recommends that Vertical Splice Line should
be below the Intermediate Horizontal
Member. This will Minimize Shear Stress at
the Structural Seal Line.