EFCO 525 Series - Manual (Page 35)

SECTION VIII-FRAME INSTALLATION
[FIG. 46]
B. SHEAR BLOCK
(CONT.)
PAGE 33
CONDITION
ASSEMBLED
FRAME
STEP 3) INSTALLING SHEAR BLOCK FRAMES
STEP 4) ANCHORING SHEAR BLOCK FRAMES
The frame should be supported at each vertical member to ensure
the shear block joints are not over stressed. Begin the installation by
evenly lifting and supporting the frame so that the bottom of the sill is
slightly higher than the top of the subsill. With even pressure, push
the frame into the rough opening. Once the frame is in the correct
position, allow the weight of the system to settle onto the subsill.
Additional weight may be required to press the sill down even with the
top of the subsill. Ensure that the frame is centered evenly in the
rough opening.
Once the frame is installed into the rough opening, ensure that it is
true and plumb. Anchor locations for the shear block frame will be
the same as for the screw spline frame. Follow the instructions as
shown in figures 34-37 on pages 26 and 27 for proper spacing of the
anchors. It may be advantageous to anchor perimeter jambs first and
heads second to ensure the correct line of the frame is maintained.
Seal and tool all anchor heads with 795 or equivalent silicone type
sealant. These are general anchor location guidelines. Size, space,
and embedment of anchors as required to meet structural load.
SUBSILL
525 IMPACT DPS 1/2004