34 Concrete Silos 



found necessary to expend upon the silo other than 

 perhaps occasional renewing of the roof, unless a con- 

 crete roof should be put on in the first place. Concrete, 

 therefore, admirably fulfills the requirements of low 

 maintenance cost. 



One of the manufacturers of concrete silos has gone 

 to considerable trouble to gather expressions of opin- 

 ion from the various agricultural colleges regarding 

 the concrete silo. An expression was especially asked 

 on the question of the effect of the acid in silage on 

 concrete, since this is one of the main arguments usixl 



Three Concrete Silos in Perfect Condition After a Wind Storm 



Photo by Courtesy of Sanders Pub. Co., Chicago 



by the opponents of concrete silos. Some of these 

 statements are as follows : 



It has been our experience on the college farm, and the experi- 

 ence of the men for whom we have supervised the construction 

 of the cement silos, that when properly built they preserve silage 

 in first-class shape. We have never noticed the effect of the acid 

 of silage on the walls of a concrete silo. O. E. KEED, Professor 

 of Dairy Husbandry, Kansas State Agricultural College, Man- 

 hattan, Kansas. 



I think it has been definitely established that among all types 

 of silos, the concrete silo is one of the most durable. The action 

 of the acid in the silage on the durability of the concrete is not 

 a large factor in any event, and when the silo lining is covered 

 with a proper glazed coating, this action is practically negligible. 

 F. B. MUMFORD, University of Missouri, Columbia. 



