NOTE:
Tek screws are self-drilling and no pilot hole is
usually required. If you have trouble getting a Tek screw
to "bite", try another Tek screw (or you can drill a 3/16"
pilot hole).
6. On the sides of the rafter, position the top strap of
the end clamp to rest on the Tek screw as shown in
Figure 4. This prevents the clamp from slipping
when the purlin supports any weight.
Figure 4.
End Clamp Resting on Tek Screw
7. Slide two purlin end clamps on bottom side of each
end rafter into the positions at least 2-4" away from
the rafter bottom, as shown in Figure 6, to leave
room for the short tee connector added later.
8. Slip five cross connectors over each inside rafter at
the same end clamp positions shown in Figure 2.
9. Leave screws loose on the cross connectors so you
can slide in the purlins later.
10. On the sides of the rafter, position the top strap of
the cross connectors to rest on the Tek screw as
shown in
Figure 7
. This prevents the clamp from
slipping when the purlin supports any weight.
ASSEMBLE THE FRAME
Gather the Parts
•
All Rafter Assemblies
•
Pipe 1.315"x75" Swaged 17GA (10) (#131S075)
•
Pipe 1.315"x73.5" Plain 17GA (5) (#131P0735)
•
Strut 5' (4) (#QH1304)
•
Band Clamps (4) (#QH1400)
Assembly Procedure
1. Stand one end rafter (one with the band clamps
attached) and brace it in place as shown in
Figure 5. Check that the rafter is standing up
straight (plumb). Position the bolt side of end clamp
to the inside of the frame.
Figure 5.
Standing Rafters
2. Insert the plain ends of 75" purlin pipes into the end
purlin clamps at the bottoms of the end rafter and
tighten the clamps.
! CAUTION:
To prevent cover damage, the ends of the
purlins should extend no more than ½" past the end
clamp. The bolt side of the end clamps must go toward
the “inside” of the shelter (the same side as the purlin)
as shown in Figure 6.
Figure 6.
Purlin Inserted into End Clamp
3. Position an inside rafter from the end rafter using an
on-center rafter-to-rafter spacing of 43 ¼". Have
your partner hold the rafter in position while you
tighten the cross connectors at the bottom of the
second rafter.
4. Slide a purlin through cross connector at the top of
second rafter and also through the end clamp at the
top of the end rafter. Verify that the rafter is properly
spaced and plumb and tighten the cross connector
at the top of the 2
nd
rafter.
Figure 7.
Cross Connector Assembly
Tek screw
End clamp
Outside of
shelter
Purlin
Rafter
Outside of
shelter
Inside of
shelter
2-4"
½"
Purlin
Rafter
Tek
Screw
Cross
Connector
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