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3.
Side Support Arms (optional):
We thought
that this was a large enough opening that some
extra support for the plastic might be good to
help with wind. These are made the same way
as angle braces on page 9, except they are
longer.
a. Cut the swaged end off two full length pieces
of top rail.
b. Press one end of each flat in a vise or with a
large hammer.
c. Dog-ear the corners off the flat sections and
drill through the center of the flat sections
with a 5/16” bit.
d. Attach two rail end T-clamps to the
unflattened end of each support arm the same
way as the scissor rails, except install on the
inside end of each of the purlins before adding
the second T-clamp. Install them so that the flat
section is parallel with the plane of the endwall.
At this point, the support arms should be
hanging straight down from the purlins.
e. Swing a support arm over to one of the scissor
rails and attach it at the point where they meet
using a brace band, 5/1
6” x 1 ¼” carriage bolt,
and 5/16” wingnut. Using two #10 x 3/4" phillips
self-drilling tek screws, permanently attach the
brace band to the scissor rail.
f.
Repeat 3.e. for the opposite side.
3.
3.
3.a. - c.
3.d.
3.e.
3.f.
7617.999 Rev 06/21/2021 | AL, JG, ms