COST OF DIFFERENT KINDS OF SILOS. 113 



Union. The results of this inquiry are summarized 

 briefly below. 



The cheapest silos are those built in bays of barns, 

 as would be expected, since roof and outside lining are 

 here already at hand. Number of silos included, fourteen; 

 average capacity, 140 tons; average cost of silos, $92, or 

 65 cents per ton capacity. 



Next comes the square or rectangular wooden silos. 

 Number of silos included, twenty-five; average capacity, 

 194 tons; average cost of silos, $285, or $1.46 per ton 

 capacity. 



The round silos follow closely the square wooden ones 

 in point of cost. Only seven silos were included, all but 

 one of which were made of wood. Average capacity, 237 

 tons; average cost, $368, or $1.54 per ton capacity. The 

 data for the six round wooden silos are as follows: 

 Average capacity, 228 tons; average cost, $340, or $1.52 

 per ton capacity. The one round cement silo cost $500, 

 and had a capacity of 300 tons (dimensions: diameter, 30 

 feet; depth, 21 feet); cost per ton capacity, $1.67. 



The stone or cement silos are the most expensive in 

 first cost, as is shown by the data obtained. Number of 

 silos included, nine; average capacity, 288 tons; average 

 cost, $577, or $1.93 per ton capacity. 



The great difference in the cost of different silos of 

 the same kind is apparent without much reflection. The 

 range in cost per ton capacity in the 25 square wooden 

 silos included in the preceding summary was from 70 cents 

 to $3.60. The former figures were obtained with a 144-ton 

 silo, 20x18x20 feet; and the latter with a 140-ton silo, built 

 as follows: Dimensions, 14x28x18 feet; 2x12x18 feet stud- 

 clings, set 12 inches apart; two thicknesses of dimension 

 boards inside, with paper between, sheeting outside with 

 paper nailed on studding; cement floor. Particulars are 

 lacking as regards the construction of the first silo be- 

 yond its dimensions. 



It may be in order to state, in comparing the average 

 data for the cost of the different silo types, that the round 



8 



