18 



PRACTICAL SILO CONSTRUCTION 



The following table will enable the size of the 

 silo to be quite accurately estimated as to height 

 when the diameter has been determined. Thus, by 

 multiplying the capacity per foot of height by the 

 proposed height of silo, you easily secure the ap- 

 proximate capacity in tons. 



TABLE I 



SIZE OF SILOS 



diameter contains f ton to each foot of height. 



6' 



8' 

 10' 

 12' 

 U' 

 15' 

 16' 

 18' 

 20 ' 

 25' 



The usual practise is not to make the inside di- 

 ameter of the silo greater than one-half the height, 

 consequently a diameter of more than 20' inside 

 is not often required; where larger quantities are 

 needed the best practise is to build several silos of 

 smaller diameter and capacity, thus exposing as little 

 of the silage to the air between feeds as possible. 



By the table given it will be seen that, to furnish 

 the silage ration for a herd of 10 cows the lowest 

 number that it is practical to build a silo for they 

 will consume about one-fourth of a ton daily, or 45 

 tons in 180 days, 60 tons in 240 days. This would 

 require a silo 10 ' in diameter and 33 ' in height for 

 6 months' feeding, allowing 3' for the settling of 



