Octagonal foundation form – Grain Systems PNEG-1510 User Manual
Page 11
3. Foundation Requirements
PNEG-1510 Top Dry 24', 30' and 36' Manual Batch
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Octagonal Foundation Form
There are two (2) styles of foundation forms commonly used. The first is the circular form depicted in
. The second style can be made of 2" x 8" boards set into a square with corners
blocked off to form an octagon.
This eight (8) sided form will approximate a circle and
can be constructed quite easily.
When the foundation form is completed install reinforcement rods by either welding or wiring in place.
Place 2" of compacted sand on the inside level of the foundation. The sand is then covered with a 4 mil
plastic moisture barrier. 6" x 6" Wire mesh (two (2) mats), covering the entire area of the foundation,
completes the preparation of the bin’s foundation. You are now ready to begin pouring concrete.
NOTE: All concrete is to have a minimum compressive strength of 3000 PSI at 28 days.
Figure 3C