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CLEARSPAN
™
JOB MASTER BUILDINGS
9
Revision date: 07.23.09
MAIN FRAME RAFTER ASSEMBLY (CONTINUED)
MAIN FRAME END RAFTERS
Complete the following steps to assemble the two (2) end
rafters for the main frame.
NOTE:
The two (2) end rafters are assembled using 3-Way
square tube fittings (#104626) positioned between the
upper tube splices.
1. Select the tubes needed to assemble the rafter and
place these on the ground as shown on previous page.
NOTE:
The lower leg pipes (#S20P036) are 36" long.
The upper (#S20P048) pipes are 48" long.
Measure the
pipes if needed to install them in the correct location.
DO NOT USE THE 46" (S20P046) SQUARE TUBES;
THEY ARE RESERVED FOR THE PURLINS OF THE
MAIN FRAME.
2. Insert the 3-Way square tube fittings (#104626) into the
rafter pipes as shown below and secure them using Tek
screws.
The free end of each 3-Way square tube fitting
(#104626)
must face the same direction.
The free
section of the tube fitting is used to connect the purlin
pipes.
With the rafter on the ground, the free end of the
fitting will point straight up.
IMPORTANT:
To prevent damage to the main cover,
position the Tek screws so the heads do not contact the
main cover when it is installed.
3. Connect the lower rafter legs using the 1.75" x 1.75"
square tube insert (#104075). (See the Base Rail
assembly steps if needed.) Place the insert 8" into the
rafter pipes and secure using Tek screws.
4. Repeat Steps 1–3 for the remaining end rafter.
NOTE:
There are only two (2) end rafter assemblies.
MAIN FRAME INTERIOR RAFTERS
1. Select the tubing for the first interior rafter assembly
and position it on the ground as previously described
for the end rafters.
2. Install a 4-Way square tube fitting (#104627) in the
locations shown in the diagram below and secure the
joints using Tek screws.
With the rafter on the ground,
one free end of each
4-Way tube fitting will point up; the other free end will
point toward the ground.
IMPORTANT:
To prevent damage to the main cover,
install Tek screws so the heads do not contact the main
cover when it is installed.
3. Repeat the steps for all remaining interior rafters.
4. Once all rafter assemblies are complete, continue with
the MAIN FRAME ASSEMBLY instructions that follow.