CLEARSPAN
™
JOB MASTER BUILDINGS
13
Revision date: 07.23.09
7. Rotate the purlin pipe so that the first mark is visible
(
near the pipe strap of the second rafter
) and position
the plain end of the purlin flush with (or slightly past)
the outside edge of the pipe strap.
MAIN FRAME ASSEMBLY (CONTINUED)
NOTE:
Do not allow the purlin to extend beyond the
end rafter.
8. Tighten the pipe strap mounting Tek screws and secure
the purlin to the strap using another Tek screw as
shown above.
9. Move to the second rafter and align the mark on the
purlin with the
center of the rafter
.
Tek screw
NOTE:
Pipe Strap has been removed to show mark on
the purlin.
10. Verify that the rafter spacing is forty-eight inches (48")
on-center and tighten the pipe strap Tek screws.
NOTE:
Do not
secure the purlin to the pipe strap at this
time.
11. Repeat Steps 5-10 to install the first section of the
remaining purlin assemblies for the first two rafters.
12. Choose another rafter assembly and set it in position.
13. Using Tek screws, secure the leg tubes of the
third rafter to the 105088 connectors as previously
described.
14. Remove another section of purlin pipe from the
pre-marked purlin assemblies and attach to the rafter
as previously described.
NOTE:
Do not mix the pre-marked purlin pipes. Each
purlin assembly is pre-marked, disassembled, and
reassembled on the frame as each rafter is set.
15. Verify that the distance between the rafters is 48"
center-to-center at the top. Adjust the rafter forward or
backward as needed to maintain this dimension.
16. Repeat the above steps as needed to stand, place, and
secure the remaining rafters and purlins to complete
the frame assembly.
NOTE:
If the last rafter is plumb and the purlin extends
beyond the end of the rafter, cut the last section of
purlin pipe to the required length if needed.
DO NOT allow the purlin to extend beyond the end
rafter. See earlier diagram
(Step 7).
Frame shown may differ from actual frame. It is used for
illustration only. Struts and side bracing are installed later in
this manual.
17. Once all rafters are set and all purlins are in place and
secured, return to each pipe strap and insert a Tek
screw through the pipe strap and into the purlin. As
shown in the diagram with Step 7.
18. After securing all purlin pipes to each pipe strap, locate
all purlin pipe joints and secure each of these with a
Tek screw.
19. Remove the temporary bracing (if needed) and square
the assembled frame.
Tek screw
Tek screw
