The Construction of the Stave S11.0. 



475 



regardless of any slight extra expense which may be incurred by 

 so doing. 



Size of silo to construct. — In calculating the amount of silage 

 which will likely be needed, it is customary to estimate that a 

 1000 pound cow will consume about 40 pounds or one cubic foot 

 of silage per day. This gives a basis upon which to calculate 

 the capacity of the silo required to carr}^ a certain amount of 

 stock One cow to be fed a full ration of silage, say from Novem- 

 ber ist to May ist, would require 7,240 pounds which would 

 necessitate a storage capacity in the silo of 181 cubic feet. If, 

 say 20 cows are to be fed during the period above mentioned 

 there would be required 144,800 pounds of silage necessitating a 

 storage capacity in the silo of 3,620 cubic feet. It frequently 

 becomes a question of considerable importance to know how large 

 a silo should be constructed in order to furnish the necessary 

 storage room. The following table showing the approximate 

 capacity, in tons, of silos of various depths and diameters, may be 

 found useful. 



Table showing approximate total capacity of cylindrical silos 

 for well matured corn silage, in tons. 



In making out the above table the mean weight of a cubic foot 

 of well settled silage has been taken as 40 pounds. While 

 this is only an approximation, yet it comes near enough to 

 enable us to estimate the capacity of silos. It is known that in 



