68 



HOW TO BUILD A SILO. 



tar is spread; over this another thickness of felt is put while the 

 tar coating is still green. The silo is lined with %-inch Georgia 

 pine ceiling, nailing thoroughly and the lining coated with two 

 coats of coal tar, putting on the first one quite thin, but using 

 all the wood will take in, and for a second coat tar as thick 

 as can be spread. Give plenty of time to dry before filling. 



The outside of the silo may be boarded up with vertical 

 boarding, or it may have strips nailed on hoops and be boarded 

 with novelty siding. The latter method will make a stronger 

 and better looking silo. If the hoops are well nailed to the 

 staves when being made, we shall have a silo in which it is 

 impossible for the staves to shrink or get loose. (Woodward.) 



Protection against freezing.— If the silo Is built out-doors in 

 any of the Northern states, it is necessary to provide some 

 special means to keep the silage from freezing in case this is 

 considered a very objectionable feature. The silo may be in- 

 closed by a wide jacket of rough boards nailed to four uprights, 

 leaving the section of the silo where the doors are easy of 

 access; the space between the silo and outside jacket is filled 

 with straw in the fall; this may be taken out and used for bed- 

 ding in the spring, thus allowing the staves to be thoroughly dried 

 out during the summer, and preventing the silo from rotting. 



Number of staves required for stave silo. — The following 

 table (Table VI) will be found useful in calculating the number 

 of staves required for silos of different diameters, and feeding 

 areas which these will give: 



Table VI. — Circumference and Areas of Circles. 



To find the circumference of a circle, 

 by 3.1416. 



multiply the diameter 



