PRACTICAL SILO CONSTRUCTION 25 



wall forms to the height of the silo. These uprights 

 should be placed plumb, and securely braced or held 

 by guy wires or ropes, so that they will serve as a 

 guide in building the silo walls absolutely vertical. 



A SIMPLE AND INEXPENSIVE SILO FORM 



The most simple silo form or centering, and one 

 that requires the least amount of lumber to erect, is 

 shown in detail in Fig. 3. The wood clamp is built 

 of 2x4" strips that are at least 12" longer than the 

 sheet steel used for centering is wide. Thus, if the 

 sheet steel is the usual size of 24x101", the sides 

 of the clamp will be 3 ' in length. The upper cross- 

 piece to clamp is cut long enough to lap onto the 

 side-pieces and leave space for the silo wall of the 

 desired thickness between the vertical strips. This 

 can be made longer, and then holes bored in same so 

 as to enable the worker to regulate the width of the 

 wall from 6" to 12" in thickness, or more, as may be 

 desired, thus making the same form adaptable to 

 different sizes of silos. 



The long strip, shown in Fig. 3, is of sufficient 

 length to reach entirely across the diameter of the 

 silo and then lap onto the vertical strips, to which 

 the sheet steel is attached at each side. Thus, for a 

 silo 10 ', inside diameter, this piece would have to be 

 12' long, to permit an 8" wall to be molded. This 

 strip is bolted to the vertical strips, as illustrated, 

 and also bolted to the clamp upon the opposite side 

 of the silo. 



