CLEARSPAN
™
JOB MASTER BUILDINGS
10
Revision date: 07.23.09
MAIN FRAME RAFTER ASSEMBLY (CONTINUED)
5. Once the rafter tubes for the first rafter are assembled
and the pipe straps (#QH1070) are attached to the
underside of the rafter tubes
, select the required
tubing and brackets to assemble and attach the
center
bracing
.
• 2 (#S20P064): 2" X 2" plain square tubes at 64"
each
• 1 (#104075): 1.75" X 1.75" plain square tube at 16"
each (insert)
• 1 (#S20P020): 2" X 2" plain square tube at 20"
• 1 (#104624): Square tube fitting with 1-way plate
• 4 (#105087): Connection plate (angled at top)
• 1 (#105086): Vertical bracket
The required parts for one (1) rafter are listed below:
Center Rafter Bracing
ATTENTION
: All parts are secured using Tek screws.
6. Locate the 20" vertical tube (#S20P020) and attach the
vertical bracket (#105086) to one end of the vertical
tube using eight (8) Tek screws.
Tek screws
#S20P020
#
105086
7. Select the two (2) 64" plain tubes (#S20P064) and
connect them using the 16" plain tube insert (#104075)
and Tek screws. This is the horizontal (or lower) portion
of the center bracing for the rafter.
NOTE:
After connecting the two (2) 64" square tubes
as shown above the center of the assembly will be at
the pipe splice.
8. Center the square tube fitting (#104624) on the top of
the assembly using the tubing splice as the center, and
secure the fitting to the tubes.
2" x 2" x 64"
Insert
#104075
1.75" x 1.75" Square tube insert
Tek screws
2" x 2" x 64"
#104624
Tube splice
9. Place the 20" vertical tube (#S20P020) over the fitting
installed in the previous step and secure with a Tek
screw.
NOTE:
Verify that the bracket attached to the top of the
vertical tube is positioned so it can be secured to the
face of the rafter.
If assembling an end rafter, the vertical bracket is
attached to the back or inside of the rafter tube.
#S20P020
Tek screw
