76 HOW TO BUILD A SILO. 



If built inside of the barn, without a roof and not painted, 

 the cost would be reduced 3 cents per square foot, or more. 

 Silos of this type, 30 feet deep, built outside, provided 

 with a roof and including 6 feet of foundation are stated 

 to cost as follows: 13 feet inside diameter (80 tons capac- 

 ity), $183.00;' 15 feet diameter (105 tons capacity), $211.00; 

 21 feet diameter (206 tons capacity), $298.00; and 25 feet 

 diameter (300 tons capacity), $358.00. 



Complete specifications and building plans for a 300- 

 ton silo, of the kind described in the preceding pages, are 

 given in Prof. Woll's Book on Silage. The dimensions of 

 this silo are: Diameter, 26 feet; height, 30 feet. 



According to our present knowledge this form of silo 

 is most likely the best that can be built; it is a somewhat 

 complicated structure, calls for more time and skill for 

 its construction, and costs more than other kinds of 

 wooden circular silos especially more than the stave silo 

 soon to be described; but once built needs but little at- 

 tention and it is durable and economical, being pr&c- 

 tically air-tight, the losses of food materials in the siloed 

 fodder are reduced to a minimum. 



Modifications of the Wisconsin Silo. 



Several modifications of the Wisconsin Silo have been 

 proposed and have given good satisfaction; one is de- 

 scribed by Prof. Plumb in Purdue Experiment Station Bul- 

 letin No. 91, as follows: 



The studs are 18 inches apart, and for about half way 

 up there are three layers of sheeting against the studs 

 with tarred paper between. The upper half of the studs 

 has but two layers of sheeting. The sheeting was made 

 by taking 2x6-inch white pine planks and sawing to make 

 four boards. The silo rests on a stone wall 18 inches deep 

 and 16 inches wide. It is 30 feet high, 18 feet 4 inches 

 inside diameter, and holds about 1-50 tons. An inexpensive 

 but durable roof was placed upon it. The cost of this 



