CLEARSPAN
™
POLY BUILDINGS
10
Revision Date: 03.13.08
2. Verify that the on-center rafter width is 42' and secure
the rafter feet to the customer-supplied baseboards (if
used) to prevent the rafter from shifting.
3. Tighten the rafter base mounting bolts. See above.
4. With the first end rafter set and width at 42' on-center,
set the first interior rafter in place.
5. While bracing the interior rafter in position, start at
a purlin connection near the top and install a purlin.
Attach each purlin using two 3/8" x 1" hex cap bolts and
nuts per connection point. See inserts above.
NOTE:
Align the rafter feet with the lines previously
marked on the site (Page 7), or use the baseboards if
these were placed under the feet as recommended.
FRAME ASSEMBLY (CONTINUED)
6. With center purlin in position, move to the purlin
position above each rafter foot, adjust the on-center
rafter spacing as needed, and install those purlins.
ANCHOR THE SHELTER
At this point, anchor the frame. Once the frame is anchored
properly, continue with these instructions.
WARNING
: Securing the rafter feet to baseboards set
on the site is not a substitute for properly anchoring the
shelter. You must anchor the shelter as described in the
MUST READ document.
FAILING TO PROPERLY ANCHOR THE SHELTER
WILL RESULT IN DAMAGE TO THE SHELTER AND
MAY CAUSE PERSONAL INJURY.
READ THE MUST READ DOCUMENT TO PROPERLY
ANCHOR THE SHELTER.
Attach upper
purlin first.
Customer-Supplied
Baseboard
Customer-Supplied
Fastener
ATTENTION:
As the purlins are attached, tap the purlin
brackets with a hammer to align the brackets with same
brackets on the next rafter if needed.
7. Secure the mounting feet to the baseboard (if used).
8. Attach the purlins that remain between these first two
rafters.
9. Verify that all bolts, including those that secure the
rafter foot base to the pipe fitting (Step 4, Page 9), are
tight.
10. Repeat the process to set and attach the remaining
interior rafters and purlins.
11. After all interior rafters are in place, aligned, and
secure, set and attach the final end rafter.
NOTE:
When setting the last end rafter, verify that the
purlin brackets are positioned to the inside of the frame.
12. With the basic frame assembled, read the
MUST
READ
document to anchor the frame.
You must anchor
the assembled frame before continuing.
Purlin positions shown may differ slightly from actual frame.
NOTE:
If a baseboard
is used, drill holes
through the board at
evenly-spaced intervals
along the length of
the board. Drive a rod
through each hole and
into the site to prevent
the boards from shifting
and to maintain the
on-center width of the
building.
Actual rafter is not shown.
Baseboard
Rod or Ground
Stake
Step 3
