Grain Systems PNEG-366 User Manual
Page 3
3
18' Autoflow
Grain Systems, Inc. Assumption, Ill.
6" x 6" Wire Mesh
Top View
2" x 8" Forms
Foundation Line
Footing Trench
Figure #3
There are two styles of foundation forms commonly used. The first is the circular form depicted in Figure #2.
The second style can be made of 2" x 8" boards set into a square with corners blocked off to form an octagon.
(See Figure #3 below.) This eight 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 (2 mats), covering the entire area of the foundation, completes your
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 3,000 PSI
@ 28 DAYS.
OCTAGONAL FOUNDATION FORM
REV. 11-20-96