100 Concrete Silos 



for the purpose of receiving it. This track should have 

 an upward slope toward the wagon so that when the 

 carrier is unloaded it will return of its own weight to 

 the stop, which should he placed exactly above the 

 middle of the silo. 



The carrier is best made of a strong box with a 

 hinged bottom, with a fastening that may be easily 

 secured and easily loosened. This may be attached to 

 the hay carrier by chains or ropes so arranged that the 

 box when loaded will b'alance. A horse on the end 

 of the tackle rope or -a gasoline engine with a lifting 

 appliance will do the lifting. When this appliance is 

 arranged in a satisfactory manner it becomes an easy 

 matter to take care of the earth from the excavation. 



The excavation should be made in such a way that 

 the walls are perpendicular and smooth. When the 

 excavation has been carried to about 10 feet (and this 

 distance is chosen because experience has proved that 

 it is most satisfactory for the purpose), the walls of the 

 excavated part should be given a good coating of the 

 best cement concrete mixture. This should consist of 

 not less than 1 part of Portland cement to 2% parts of 

 screened sand. The sand should be sharp, not too 

 coarse, and free from 'clay. The first coat should be 

 left rough, and the second coat immediately applied 

 before the first coat hardens. In order that this work 

 may be well done, it is best to employ an experienced 

 mason for this purpose. The first two coats should 

 constitute a single coating not less than %-inch in 

 thickness. When this coat has had sufficient time to 

 harden enough to be protected against injury, the ex- 

 cavation may be continued to another depth of 10 

 feet, and the plastering repeated. 



