Grain Systems Tanks PNEG-1095 - Manual (Page 18)

5. Foundations
18 PNEG-1095 FCDL 4.00" Corrugation Externally Stiffened Grain Bin
Placing the Reinforcement
1. Once the forms and trench have been prepared, begin placing the reinforcement rods and mesh in
the foundation’s footing. (See the appropriate charts and drawings for the bin to determine
requirements and positions of the reinforcement on
Pages 21-27 .) Be sure reinforcement rods are
properly lapped by wiring.
2. Place at least 2" of compacted sand on the inside section of the foundation to provide a good base
for the concrete and to protect against rodents.
3. Cover the sand with 4 mil polyethylene plastic, which will act as a moisture barrier.
4. Add two (2) layers of 6" x 6" wire mesh to the entire area of the foundation slab or the entire
foundation for monolithic systems to complete the preparation of the bin’s foundation.
Figure 5C Octagon Form
* All concrete to have a minimum
compressive strength of
3000 PSI at 28 days.
2" x 8" Forms
6" x 6" Wire mesh
Footing trench
Foundation line