76 



HOW TO BUILD A SILO. 



VII 



is easily obtainable from any lumber yard, is 

 built by simply placing one 2x4 on top of anT 

 other interlocking the corners and nailing 

 together. The 2x4's are sawed at the proper 

 angle to fit silos from, 10 to 20 feet in diam- 

 eter. The lining consists merely in placing 

 prepared roofing on the inside to make it 

 air-tight. It la said that this silo may be 

 built with but 15 to 20 tons capacity and at 

 any later time may be increased in capacity 

 by building it higher. 



Cost of Different Kinds of Silos. 



Fig. 32. — Pattern 

 for chords or 

 ribs. The small 

 size is used only ^^^ ^^^^ ^j ^ ^j,^ ^^^ depend on local 



for sill and plate . ^ , , , * 



j.jj,g conditions as to price of labor and mater- 



ials; how much labor has to be paid for; the 



size of the silo, etc. The comparative data for the cost of two 



round silos, 13 and 25 feet in diameter, ahd 30 feet deep, is given 



by Prof. King, as shown in the following table: 



Table VII. 



Kinds of Silo 



IS Ft. Inside Diameter 



without 

 Root 



with 

 Root 



25 Ft. Inside Diameter 



Without 

 Root 



With 

 Boot 



Stone Silo 



Brick Silo 



Brick-lined Silo, 4 inches 



thic^t 



Brick-lined, 2 inches thick. . . 

 Lathed and plastered Silo.... 

 Wood Silo with galvanized 



iron 



Wood Silo with paper 



Stave Silo 



Cheapest wood Silo 



$151 

 243 



142 

 131 

 133 



168 

 128 

 127 

 101 



$175 

 273 



230 

 190 

 185 



185 

 222 

 183 

 144 



$264 

 437 



310 

 239 

 244 



308 

 235 

 156 

 195 



$328 

 494 



442 

 369 

 363 



452 

 358 

 289 

 240 



