Oldcastle BuildingEnvelope Reliance-IG SS - Manual (Page 47)

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R E L I A N C E - I G S S I N S T A L L A T I O N M A N U A L
FIGURE 56 through FIGURE 59 show the basic layout of the standard corner mullion assemblies. The
outside corners will be an one-piece configuration, while inside corners will be two mullion corners utilizing
corner closures to connect the opposing mullions. These details are for general reference and do not
necessarily reflect all conditions. For specific assembly, sealing and anchoring notes, refer to approved shop
drawings. When installing any of the outside corners it will be required to add an additional fillet bead of
sealant at the interior of the vertical leg of the glazing pocket adjacent to the corner mullion. This sealant will
assist in preventing any water infiltration since this leg is not attached to the corner mullion.
Using a one-piece corner mullion in the Reliance™-IG SS system requires the pre-assembly of corner
sections. For the first bay on either side of the corner mullions, attach the standard screw spline horizontal
members to a 90° corner mullion with the special shear blocks shown in FIGURE 56. Similar assembly is
required at the one-piece 135° corners as noted in FIGURE 57. The other half of the horizontal members can
be attached to the intermediate mullion halves using the screw splines.
CORNER MULLIONS
Figure 55
Outside 135 Corner
Mullion Reinforcing
IW-199 Alum.
Reinforcement
IW-188 Alum.
Reinforcement RS- 11, 3/8" x 3" steel bar
1/4"-20 X 4 1/2" hex head
bolt, nut and lock washes
Locate at bottom of
reinforcing
1/4"-20 X 1 1/2" hex head
bolt, nut and lock washers
Locate at top and bottom of
reinforcing
MULLION REINFORCEMENT & CORNER INSTALLATION