PNEG-2145
21' Diameter Gamma Roof Assembly Instructions
15
4. Roof Assembly
Installing the Roof Rafter Bracket to the Top Outside Stiffener
The roof rafter bracket is the vertical member which supports the rafter. It is installed to the inside
perimeter of the sidewall sheet at the same time as the top outside stiffener.
What You Should Know
NOTE:
Do not tighten the nuts (C) until all hardware has been installed attaching the rafter bracket, to
the sidewall and the outside stiffener.
1. From the inside perimeter of the sidewall, place the bolt (B) to attach the rafter bracket (D) to
the top outside stiffener (A) through the hole located approximately 4" down from the top of the
sidewall sheet (G).
NOTE:
Install the bolts from the inside to the outside of the bin, passing through the rafter bracket,
corrugation spacer, sealing washer, sidewall sheet and outside stiffener and flange nut
.
NOTE:
Make sure to install the bolts through every second hole from the top of the rafter bracket.
2. On the inside perimeter, install a sealing washer (F), corrugation spacer (E) and rafter bracket (D).
3. On the outside perimeter, install the outside top ring stiffener (A).
4. Tighten the hardware to the recommended torque specifications. See bolt torque specifications
Figure 4A Installing the Roof Rafter Bracket to the Top Outside Stiffener (FC Stiffened Bins) - 4.00"
Ref #
Part #
Description
Ref #
Part #
Description
A
FC-42066XX
1 Ring Top Stiffener
E
S-7041
Corrugation Spacer
B
S-7488
3/8" x 1-1/2" Flange Bolt
F
S-3558
Sealing Washer
C
S-9426
3/8" Nut
G
Sidewall Sheet
D
CTR-1364
Roof Rafter Bracket
H
Assembled View
