Concrete Silos 



43 



in order to make the structure safe. When the hoops 

 are so tightened, a single shower of rain will swell 

 them to such an extent that either the staves will 

 buckle or the hoops will break. Of course, there can 

 be nothing permanent about a structure made of 

 material in which such qualities are inherent. An 

 illustration printed herewith is made from a photograph 

 taken on the inside of a silo and shows the effect pro- 

 duced by shrinking. No one will imagine for a mo- 

 ment that such a silo would stand erect under a mild 

 wind. When a silo collapses it is a matter of consider- 

 able expense to erect it again. No farmer will be satis- 

 fied with a silo that 

 requires such con- 

 stant attention and is 

 in such constant dan- 

 ger. 



It is reported by 

 The Twentieth Cen- 

 tury Farmer that a 

 wood stave silo was 

 erected on the state 

 fair grounds at Lin- 

 coln, Neb., solely for 

 exhibition purposes 

 by a company en- 

 gaged in promoting 

 the sale of just such 

 silos. It may be 

 taken for granted 

 that it was erected in 

 the best way possible, 

 in strict accordance 

 with the mechanical principles involved in proper erec 



Wood Stave Silo Displaced by Wind 

 Photo by Courtesy of Virginia Agr. 

 Exp. Station 



