40 PRACTICAL SILO CONSTRUCTION 



completed wall, which is usually made about 3J" 

 in thickness. 



After the framework of rods are in place, sheets 

 of wire lath, or expanded metal lath, are fastened to 

 the rods by tying with wire at each intersection of 

 the rods and also at the joints of the metal lath, so 

 that the sheets are securely fastened to the frame- 

 work, and thus make a reinforcement that will be 

 ample to resist the pressure of the silage, also the 

 strain placed upon the silo from other causes. 



The concrete is then plastered upon the inside of 

 the silo to an average thickness of 2", and while this 

 is damp enough to insure a good bond the plaster 

 coat is then placed upon the outside of the metal lath. 

 The methods followed in stucco work are of use in 

 this system to insure a good bond between the two 

 coats of concrete plaster applied. 



The door-frames are inserted in spaces left for 

 same as the work progresses. By having a groove 

 on the outside of the door-frame into which the 

 metal lath will fit, the frames are securely held in 

 position. The roof is placed by having the | " rods 

 extend several inches above the top of silo, and these 

 are threaded for a nut. Thus the rafters are bolted 

 to the vertical rods that form a part of the reinforce- 

 ment of the structure. 



This system of construction is far in advance of 

 the method of using a wood frame, to which wood 

 lath are nailed and the entire surface coated with 

 concrete plaster coats. 



