Grain Bin Capacity (Bushels)
Cylinder plus cone volume of a round bin in cubic feet and bushels (ft^3 x 0.8036), and weight by grain test weight (corn / wheat / soybeans / oats). Bin geometry first-principles; USDA FGIS test-weight standards.
Formula and source
Cylinder volume = pi x (d/2)^2 x eave height. Cone volume = (1/3) x pi x (d/2)^2 x peak height. Total ft^3 = (cylinder + cone) x packing factor. Bushels = ft^3 x 0.8036 (1 bushel = 1.2445 ft^3). Weight = bushels x test weight.
Bin geometry first-principles; USDA FGIS (Federal Grain Inspection Service) standard test weights by name.
Audience
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