Grain Systems Tanks PNEG-972 - Manual (Page 78)

11. Accessory Instructions
78 PNEG-972 Construction Manual for 2.66" Corrugation 105' Diameter Tall Tanks (28 Rings and Taller)
2.66" Sidedraw Instructions - 3 Post (Internally Stiffened)
Figure 11B
Detail “D”