Grain Systems Tanks PNEG-972 - Manual (Page 24)

7. Bolting and Hardware Requirements
24 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. (Continued)
NOTE: Outside stiffened bins with sidewall that is 10 gauge laminated or thicker will have three (3)
sealing washers per sheet provided loose. See the instructions for installation of these loose
sealing washers. Outside stiffened bins, 42' and larger diameter also may have loose sealing
washers provided for the roof rafter wall attachment bracket in the roof assembly hardware.
See the roof instruction manual on those washers and their installation. All other sealing washers
are pre-assembled onto the bolts. Steel flat washers are shipped loose. In the shell portion of the
bin 5/16" steel flat washer (S-845) is used where the base angle attaches to the sheet and some
are installed at the main eave clips. The 3/8" steel flat washers (S-248) are used at the stiffener
splices and at the laminated stiffener to sidewall locations and steel flat washers are also utilized
in some roof locations.
This 7/16" nut is to be installed at all locations where the 7/16" x 2-1/2" bin bolt S-9444 is installed
(9QL, 8QL and 6QL).