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Concrete Silos 



bottom. The staves 

 are 30 inches long, 

 10% inches wide, 

 and 2 l /2 inches thick. 

 Supreme Silo. The 

 patent on this silo is 

 held by J. A. Brod- 

 erick, of Marshall- 

 town, Iowa. It is 

 built with either a 

 single or double Swan stave Sil 



wall, the former being recommended for warmer cli- 

 mates and the latter for colder. The distinctive fea- 





A Plant Manufacturing- Swan Staves 



ture of this system is a concrete band or rib which is 

 cast around the silo after the slabs are laid up, one of 

 these being placed at each joint and serving to cover 

 the reinforcing as well as cover the joint between the 



