Grain Systems Tanks PNEG-4072A - Manual (Page 102)

Chapter 7: Roof Assembly
Attaching the Roof Panels
Roof panels overlap the previous roof panel, giving protection from outside elements.
Before You Begin
Ensure all A-frame roof rafter assemblies are installed, and ensure all intermediate purlins are installed
and properly tightened. Predetermine the manway access location.
What You Should Know
For adjustment purposes, roof panels will be installed to each rafter first, causing exposed gaps between
each roof panel group (see figure below). After all roof panels are installed, ensure that all installed hard-
ware (flange bolts with sealing washers and flange nuts) are tightened to secure the roof panels.
Figure 7-26 Roof panel overview
A Roof panel (CTR-0196) B Exposed gap
1. With assistance, position a roof panel (A) onto the A-frame roof rafter (C), and install a flange bolt (D)
and flange nut (E) securing the upper portion of the roof panel (A).
2. Install five flange bolts with sealing washers (D) and flange nuts (E), into the lower portion of the roof
panel (A), securing the panel to the eave angle.
3. Working in a clockwise direction, continue installing roof panels (A) to each A-frame roof rafter (C),
leaving an exposed gap (B) between each installed roof panel.
102 Pneg-4072A 72 Ft Diameter 40-Series Bin