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Overview:
Setting up arc purlins along the interior
and exterior sides of arc.
Instructions
1. Connect four 12 10' swaged tubes together plus one 9 8' tube (drill in two 1 screws at the
unions to hold tubes in place) to create one purlin. Construct four purlins (two interior
and two exterior) and connect them to arcs using 22 33/33mm hinged double clamps.
See sketch below.
9
8' tube (4)
12
10' swaged tube (16)
22
33/33mm hinged double clamp (18)
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