Grain Systems Tanks PNEG-4021 - Manual (Page 80)

80 PNEG-4021 40 Series 18', 21' and 24' Diameter Bins
10. Center Collar Details
Center Collar Details
The standard roof with a dome cap lid will have a center collar assembled from three (3) pieces.
The dome cap will mount onto it as well as the flashing. The dome cap is standard on all 18'-36'
40 series bins. A flat top is standard on all 42'-60' 40 series bins.
For the 36' dome cap bins, this will be the upper or “top” center collar. The lower or “Z” center collar details
are given on the later pages.
36' and larger flattop bins do not have the top center collar.
Figure 10A
CRP-4608 CRP-4609
18', 24' through 54' Roofs
Color code: Red
21' Roof
Color code: Blue