4. Roof Assembly
22
PNEG-2145
21' Diameter Gamma Roof Assembly Instructions
Peak Ring/Center Collar Placement
The
gives the approximate height needed to install the center collar.
With one sidewall ring in place, position the center collar at the height specified, measuring from the
bottom of the center collar to the foundation as shown in
. If additional rings are required for
construction purposes add 44" for each additional ring.
NOTE:
It is better to set the center collar a little too high. Do not set the center collar too low.
Figure 4I Center Collar Placement
NOTE:
Make sure the center pole is adjustable up and down.
Refer to assembling the center collar on
for center collar clip assembly, long center collar channel
and splice plate assemblies.
Ref #
Description
A
The measurement from the bottom of sidewall sheets to the top of the center collar (CRP-4608).
Bin
Diameter
Use with 1 Ring of
2.66'' Corrugated Sidewall (A)
Use with 2 Ring of
2.66'' Corrugated Sidewall (A)
Use with 1 Ring of
4'' Corrugated Sidewall (A)
21'
8'-8" (264.16 cm)
11'-5" (347.98 cm)
9'-8" (294.64 cm)
