What is a "silo"?

- A cylindrical watertight and airtight structure for storing bulk materials such as grain, coal, cement, wood chips, sawdust, or silage (fermented feed).
- In agriculture, silos can also act as "grain elevators."
- Provide a dry, controlled, and secure environment for the storage of goods.
- Three types: tower, bunker, and bag silos.

Tower silo:
- Designed by Franklin Hiram King (1848-1911) with the goal to reduce the occurrence of moldy corners in silage.
- Cylindrical in structure
- D=4 to 30 m (10 to 90 ft); h=10 to 84 m (30 to 275 ft)
- Materials: concrete or wood staves, cast concrete, steel panels.
- Can be disassembled.