CLEARSPAN
™
STORAGE MASTER
16
PB02580R6N1D Revision date: 03.22.19
ATTACH THE LOWER PURLINS
After the upper four (4) runs of purlins are in place and
secure, complete these steps to install the remaining
purlins.
Required tools:
• Tape measure
• Permanent marker
ATTENTION:
The lower purlins run on the inside of the
rafter legs near the bottom of those rafter legs.
1. Begin at one end of the frame assembly and measure
approximately 6" up from the rafter foot mounting plate
on the end rafter and mark the inside of the rafter leg.
NOTE:
This mark and the remaining marks identify
the location of the lower purlin for each side.
The mark
identifies the center of the purlin
.
2. After marking the end rafter, attach a pipe strap to the
inside of the rafter leg so that the strap is positioned
with the mark at its center. Do not tighten the strap Tek
screws at this time.
3. Move to the remaining leg on the same rafter assembly
and mark as instructed in the previous steps.
4. Repeat Steps 1-3 for the remaining end rafter
assembly.
5. Stretch a chalk line from one end rafter to the other
along the same side of the frame. Align the chalk line
with the marks on the rafter legs and snap the line to
mark the purlin height on the interior rafters.
6. Repeat Step 5 to mark the interior rafters on the other
side of the assembled frame.
6"
7. Return to each chalk mark and remark the position
using a permanent marker.
8. After marking the purlin height, place a cross-connector
at the base of each interior rafter leg.
ATTENTION:
Attach pipe straps to the end rafters only
(Fig. 1). Cross-connectors are used to secure the lower
purlins to the inside rafter assemblies (Fig. 2).
9. Connect the first two pipes of a lower purlin, insert the
section through the cross-connector on the inside rafter
leg, and insert the plain end into the pipe strap attached
to the end rafter (below).
Figure 1
Figure 2
10. Tighten the Tek screws to secure the pipe strap to the
end rafter leg as described for the other purlins.
11. Install a Tek screw (FA4482) through the pipe strap and
into the purlin to anchor the purlin in place.
Tek Screw
ALL PURLINS RUN ON
THE INSIDE OF THE
RAFTERS/FRAME.
