Grain Systems Tanks PNEG-4021 - Manual (Page 17)

3. General Overview
PNEG-4021 40 Series 18', 21' and 24' Diameter Bins 17
Figure 3C Anchor Bolt Chords for 21' Diameter 3 Post Bin
Diameter 21'
# of Anchors 21
Bolt Radius 10' - 10-1/8"
Chord 1 3' - 2-13/16"
Chord 2 6' - 4-3/4"
Chord 3 9' - 4-15/16"
Chord 4 12' - 2-5/8"
Chord 5 14' - 9-1/8"
Anchor chord dimensions Bolt radius