Grain Systems Tanks PNEG-4021 - Manual (Page 15)

3. General Overview
PNEG-4021 40 Series 18', 21' and 24' Diameter Bins 15
Figure 3A Anchor Bolt Chords for 18' Diameter 2 Post Bin
Diameter 18'
# of Anchors 12
Bolt Radius 9' - 4-3/16"
Chord 1 4' - 10-1/8"
Chord 2 9' - 4-1/4"
Chord 3 13' - 2-3/4"
Anchor chord dimensions Bolt radius