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Concrete Silos 



tion, the concrete is mixed, hoisted, dumped and 

 packed between the forms, and allowed to set. The 

 next morning the nuts connecting the sections of the 

 outer form are loosened, the steel wedges fixing the 

 sections of the inner form are lifted, and both inner 

 and outer forms swing free from the wall. Then, by 

 means of the jacks resting on the widely flanged base 

 collar, the whole mechanism is lifted until in position 

 for a new fill and the forms are again set by means of 

 the bolts and wedges. One fill a day is the customary 

 rate of progress. 



These silos were 

 originally made with- 

 out chutes, but a 

 chute form is now an 

 integral part of the 

 system. 



This chute form is 

 carried by two of the 

 steel tees which are 

 longer than the rest 

 and is attached to 

 the outer set of 

 shells, taking the 

 place of one of the 

 separable sections. It 

 is set to maintain the 

 continuity of the silo 

 wall and to mould a 

 chute wall of a thickness of 6 inches where it joins the 

 silo wall, gradually decreasing to 4 inches at the out- 

 side. The outer shell of the chute form is released and 

 bolted up in precisely the same manner as the outer 

 form of the machine is released and bolted up, the 



Twin Silos, 16x72 Feet, at Dayton 

 State Hospital, Dayton, Ohio 



