Concrete Silos 



41 



produced from an extensive article by one of the expo- 

 nents of clay products. He calls concrete a "good 

 form of foundation for a hollow block silo"; but if it 

 is good enough for the foundation, where the juices 

 gather and the acids are the strongest, why should he 

 consider it such a dangerous material for the body of 

 the structure? 



There are perhaps more wood silos sold than any 

 other kind. One reason for this is that they are cheap, 

 and another is that they are short lived and have to be 

 replaced frequently. 



Certain qualities that are inherent in the very 

 nature of the material of which wood stave silos are 



A Good Form of Foundation for a Hollow Block Silo. 



Illustration Reproduced from "Brick and Clay Record," Showing 

 Concrete Recommended as Foundation and Floor For a Silo 



made of necessity take them out of the class of perma- 

 nent structures and put them in the class of temporary 

 expedients. Wood is not an enduring material, espe- 

 cially when exposed to the weather. The very nature 



