ESTIMATES OF MATERIALS. 79 



u. silo, can use these estimates for figuring out the approximate 

 cost of silos of the three kinds under his conditions as to cost 

 of materials and labor. The estimates are made for silos built 

 in the open, on level land. ®n hillsides deeper walls may be 

 made to advantage, and where the silo is located within a build- 

 ing no roof will be needed. Consequently various factors may 

 alter the applications of these estimates, which are only offered 

 as suggestive with the hope they may prove helpful. The first 

 three estimates of materials are published by Prof. Plumb, while 

 the others have been furnished by Professors King and Withy- 

 combe. 



Estimate of Materials for Wisconsin Improved Silos. 



Size, 30 feet deep, 14 feet diameter. Capacity, 90 tons. 



Brick — 3375 for foundation, 1 foot thick 3 feet deep. 



Studs^ — 50 pieces 2x4, 16 feet long. 



Studs — 50 pieces 2x4, ,14 feet long. 



Flooring for doors — 32 feet, 4 matched. 



Sheeting — 3000 feet, % inch, resawed from 2x6 — 16 foot plank 

 sawed three times, dressed one side to uniform thickness for 

 inside lining of two layers. 



Lining — 150Q feet of same for outside. 



Tar building paper — 200 yards, water and acid-proof. 



Nails— 200 lbs. 8-penny; 200 lbs. 10-penny. 



Spikes— 20 lbs. 



Rafters — 22, 2x4, 10 feet long, for usual ridge roof. 



Sheeting for roof — 350 feet of 16 foot boards. 



Shingles— 3000. 



Shingle nails — 12 lbs. 



Dormer window for filling through. 



Paint — 7 gallons, providing two coats. 



Cement — 2 barrels, for cementing bottom. 



Estimate of Materials for a Modified Wisconsin Silo. 



Same capacity as preceding. 



Brick — 350 for foundation, 8 in. wide, 5 in. thick. 



Studs — 50 pieces 2x4, 16 feet long. 



Studs — 50 pieces 2x4, 14 feet long. 



Sheeting — 3000 ft. % in. resawed from 2x6, 16 ft. plank sawed 

 three times, dressed to uniform thickness for Inside lining of 

 tvio layers. 



'Tar building paper — 200 yards water and acid-proof. 



Nails — 150 lbs. 8-penny. 



Spikes — 12 lbs. 



No outer siding, roof or fioor is figured on or provided for in 

 this construction. 



