Grain Systems Tanks PNEG-972 - Manual (Page 20)

7. Bolting and Hardware Requirements
20 PNEG-972 Construction Manual for 2.66" Corrugation 105' Diameter Tall Tanks (28 Rings and Taller)
Refer to 2.66" commercial tank bolting requirements for complete bolt usage.
0.3125" x 0.750" Pre-assembled with a steel backed neoprene washer.
This bolt is used to connect horizontal and vertical seams for 14 gauge and thinner sidewall sheets
to each other. It is also used in attaching roof panels to the top sidewall sheet and attaching roof
panels and flashing to the center collar.
0.3125" x 1.250" Pre-assembled with a steel backed neoprene washer.
This bolt is primarily used to connect roof panels together where they overlap. It is also used at the
bottom of the flat bottomed bins to attach the base angle to the sidewall sheet.