CLEARSPAN
™
MAJESTIC GREENHOUSES
16
Revision date: 06.21.16
FRAME ASSEMBLY (CONTINUED)
16. Assemble the first two sections of the another purlin
and insert it through the cross-connector and into the
pipe strap on the end rafter. Tighten the pipe strap and
secure the purlin to the pipe strap using a Tek screw
(FA4484).
17. Verify the on-center rafter spacing and tighten the
cross-connector. The purlin should be saddled in the
pipe joint on the rafter.
18. Install a Tek screw (FA4484) through the cross-
connector and through the joint in the purlin to prevent
separation of the purlin pipe joint.
19. Move to the remaining joint below the bottom chord on
the inside rafter and attach the first two sections of the
next purlin.
The drawing above shows the 5 upper purlins in
position.
20. Set the next
inside rafter assembly
in position and
secure it to the feet as previously instructed.
21. Continue to add cross-connectors and purlin pipe and
secure these to the rafter assemblies as previously
instructed.
ATTENTION:
The last rafter to place in position will
be the remaining end rafter. This end rafter includes
the pipe straps attached during the rafter assembly
procedures and is identical to the first end rafter set in
place.
22. Set the end rafter in place and align the purlins with the
pipe straps (previously attached to the rafter). Insert the
rafter feet mounting bolts (bolt head to the outside) and
tighten as previously instructed.
23. Begin with the top pipe strap and ensure that
approximately half an inch of the purlin extends through
the pipe strap and tightened the pipe strap mounting
bolts.
24. Verify that the end rafter is plumb.
NOTE:
If the rafter is not plumb (straight up and down)
and more of the purlin pipe needs to extend through
the pipe strap and beyond the edge of the rafter, it may
be necessary to cut the purlin to the required length.
To prevent end panel damage,
do not allow the purlin
to extend beyond the edge of the rafter
.
25. With all rafters in place and the top five (5) purlins
installed and tightened, return to the rafter feet and
tighten the main bolt that attaches the bottom plate of
the rafter foot to the upper portion of the foot.
26. Complete the ATTACH THE BOTTOM and ATTACH
THE CENTER PURLIN procedures that follow.