Grain Systems Tanks PNEG-4042 - Manual (Page 80)

80 PNEG-4042 40 Series 42' and 48' Diameter Bins
11. Roof Assembly
Roof Assembly
After completing the first sidewall ring, you are ready to begin construction. Begin with the center collar
sections. For convenience in opening and closing the center cover, the roof ladder and manhole sheet
should be placed directly opposite the two (2) slide rod holes in the center collar. Next build a roof center
support to hold the peak in place at the proper height. A simple structure composed of a sturdy cross
arm attached to a pole and supported by a platform or scaffolding will do. Stand the center support directly
in the center of the bin. The following dimensions are approximate distances used in bin roof construction.
Adjusting the center support height will ease roof erection. Place eave clips inside the bin wall to maintain
an opening around the top of the sidewall. This allows condensation, which normally collects on the
underneath side of the roof panels, to flow freely to the outside of the bin, thus avoiding possible
grain spoilage.
(See Figure 11A.)
Figure 11A
Bin Diameter
Use with 1 Ring of
2.66'' Corrugated Sidewall
Use with 2 Ring of
2.66'' Corrugated Sidewall
“A” “A”
42' 13'-10" 16'-6''
48' 15'-4" 18'-0"
Ref # Description
A Bin Diameter
B Center Support Pole