56 DAIRY FARMING 



forcing wire. A reinforcing wire is laid every foot. The 

 roof is made of lumber and covered with prepared roof- 

 ing paper. It took three men six days to put up the silo 

 wall including the concrete bottom. 



Cost of One Silo. The itemized cost of each silo is 

 as follows: 



Labor, digging foundation $16.00 



Labor, putting up the concrete wall. . . . 65.00 

 Thirty-nine barrels cement at $1.20 a 



barrel 46.80 



One and one-half rolls No. 5 wire at 



$1.65 a roll 2.47 



Twenty loads gravel (distance hauled 



300 yards) at 40 cents a load 8.00 



Roof 35- 



Binding irons run horizontally across 



door openings 2.75 



Total cost of silo, without doors $176.02 



The labor in putting' up the concrete work was per- 

 formed by silo builders who were paid by the day and 

 they furnished their own molds and concrete mixer. The 

 latter was run with a one and one-half horsepower gaso- 

 line engine. No account was taken of the cost of the 

 gasoline which, however, was small. Flowing water was 

 run right up to the silo. 



Doors. On the inside, right at the edges of the con- 

 tinuous opening for the doors, a depression, two inches 

 deep and two inches wide, is made to receive the doors. 

 This depression is made by putting a 2x2-inch stud in the 

 mold. The doors consist of pieces of planks twelve inches 

 wide. To prevent entrance of air where the planks join, 



