250 



STATE BOARD- OF AGRICULTURE. 



Materials used: 



40 barrels of cement, 

 40 cubic yards of sand, 

 400 pounds of wire. 

 For the inner form, there were used in addition to sawed circles, 

 about 95 board feet % inch x 2 inch material and 75 linear feet l^ inch 

 X % inch strips for upper and lower edges and 2i/2 feet of 2 x 4. 



Fig. 14. Silo owned by Martin Gould, Brown City, Mich. 



For the outer form, there were used about 115 board feet Y2 i^ch x (I 

 inch sheeting, 80 linear feet I/2 inch x 2 inch strips and 84 linear feet 

 1 inch X 1 inch material for ribs and 2I/2 feet of 2 x 4. 



In addition to the above there had to be provided material for scaf- 

 folding and platform and a few other sundries 



The doors are of 1 inch material. 



