Concrete Silos 



31 



for all practical purposes; but with the addition of 

 one or the other of these methods of excluding >air and 

 moisture, there can be no doubt whatever of the effi- 

 ciency of concrete for silo construction so far as these 

 qualities are concerned. 



Concrete has proved its fireproof qualities on so 

 many different occasions, and in so many different situ- 

 ations, that it is scarcely necessary to go farther than 

 a mere statement of the case. There are on record 



A Silo Which Withstood Fire on Farm of John H. McCoy, 

 Harrisville, Pa. 



instances of a large number of silos which have suc- 

 cessfully withstood the ravages of fire where all other 

 surrounding buildings- have been destroyed. In addi- 

 tion to saving the silo itself, concrete is such a poor 

 conductor of heat that if silo openings are properly 

 protected, the contents of the silo will also be saved 

 in good condition. 



Concrete is proof against the .attacks of vermin. 

 There is no material which offers stronger resistance 

 to the attacks of rats and other pests than concrete. 



Concrete will give as good a protection against 



