128 Concrete Silos 



stood up by the side of each half stave, and the circle 

 is completed by alternate half and whole staves. 

 Thereafter, whole staves are used until the top of the 

 silo is reached, when half staves are used to fill out 

 the top, alternately between the full staves. 



On completion of the first circle, two bands are 

 placed around the circle, one 2 inches above the foun- 

 dation and another half band is placed 14 inches above 

 the foundation, and the end of the half band is placed 

 in the lugs on either side of the door and turned up 

 even with the end of the rod. 



As each course is erected and put into place, the 

 concavity between staves is filled with mortar, con- 

 sisting of 1 part cement, to 3 parts of screened sand, 

 and the ends of the staves as they meet are also filled 

 with mortar, so that when the silo is completed every 

 joint is filled, thus preventing any escape of the silage 

 juices or admission of air into the silo. 



Suitable collapsible staging is erected on the in- 

 side of the silo as the walls are being extended upward. 



As soon as the silo walls are completed, a water- 

 proofing composition is placed upon the inside wall 

 by brush applications. 



In this system the contractor is supplied with steel 

 molds sufficient to cast 200 staves or more a day. The 

 supposition is that the contractor will haul his molds 

 to the farm, or the place where the silo is to be "built, 

 and that the owner will provide the materials ready 

 for working. The contractor will then send two ex- 

 perienced men to cast the staves. The manufacturers 

 state that it will require 900 staves to build a, silo 16 

 feet in diameter by 35 feet high, holding 150 tons of 



