ESTIMATE OF MATERIALS. 117 



Estimate of Materials for a Wisconsin 

 Improved Silo. 



Size 30 ft. deep, 20 ft. inside diameter, capacity 200 

 tons. 



Stone foundation 7.5 perch. 



Studs 2x4, 14 and 16 ft., 1,491 ft. 



Rafters 2x4, 12 ft., 208 ft. 



Roof boards Fencing, 500 feet. 



Shingles 6 M. 



Siding Rabbeted, 2,660 ft. 



Lining Fencing, ripped, 2,800 ft. 



Tarred paper 740 Ibs. 



Coal tar 1 bbl. 



Hardware $6.00. 



Painting (60 cents per square) $13.20. 



Cementing bottom $5.00. 



Carpenter labor (at $3 per M and board) $33.17. 



The estimated cost of the last silo is $246.39; it is an 

 outside, wholly independent structure, except connected 

 with the barn in the manner shown in Fig. 20, with en- 

 trance and feeding chute toward the barn. 



Estimate of Materials for Stave Silo. 



12 ft. in diameter, 24 ft. deep, capacity, 49 tons. . 



1 2-3 yards of rock gravel. 



4 barrels of sand. 



1 barrel of cement. 



2260 ft. tongued and grooved staves. 



72 ft. 3x6, 24 ft. door frames. 



358 ft. % in. round iron for hoops and bolts, weight 

 465 Ibs. 



9 lugs. 



54 nuts. 



Preservative ($1.50). 



If the silo is constructed outside, materials for roof 

 and painting are to be added to the preceding list. 



Although most of the foregoing descriptions of stave 



