CHAPTER VI 



THE DIFFERENT TYPES OF CONCRETE SILOS 



Concrete silos naturally divide themselves into two 

 broadly general classes : Those which are built up in 

 position and which form when completed one practic- 

 ally continuous monolithic mass; and secondly, those 

 which are built up from structural units of concrete 

 previously manufactured. 



This is a classification somewhat different from that 

 used by other writers on this subject, but it is believed 

 that careful consideration will show it to be logically 

 correct. 



The metal lath silo, for instance, has usually been 

 considered in a class by itself, and apart from the 

 monolithic silo. In any broad general classification, 

 however, it would seem to belong with the monolithic 

 silo inasmuch as it is built up in place and forms prac- 

 tically one solid mass when completed, the main differ- 

 ence being that it is plastered in vertical layers instead 

 of being poured in horizontal sections. The pit silo, if 

 it is considered at all, will also come under this classifi- 

 cation, it being a plastered silo underground instead 

 of above ground. 



This first classification will also include the hollow 

 wall silo when poured in place. 



The second classification will include the silo built 

 of concrete blocks, concrete staves, or any other form 

 of structural units which are made previous to the erec- 

 tion of the silo. 



(56) 



