58 



HOW TO BUILD A SILO. 



outside. They shall he bedded in cement mortar and the staves 

 shall then be set on the foundation and well spiked to theae 

 plates. 



Hoops. — Hoops shall be made from two pieces of %-inch diam- 

 eter round iron with upset ends, threaded 8 inches, with nut and 

 washer at each end; as a support for the hoops a piece of 4x8 

 shall be substituted for a stave on opposite sides and holes bored 

 in it and the ends of hoops passed through these holes and tight- 

 ened against the sides of the 4x6 -inch. The. hoops shall be twelye 

 in number starting at the bottom 6 Inches apart and increasing 

 in distance 6 inches between each hoop until a. space of 3 feet 

 6 inches is reached; from this point up this distance shall be 

 preserved as near as possible to the top. 



Roof. — Roof shall be made to a half-pitch of 6-inch clear 



Fig. 16.— A cheap roof of a stave silo. (Clinton.) 



siding lapping joints, nailed to 2x4-inch rafters, 2-feet centers 

 1-foot by 4-inch ridge, and 2x4-inch plates. These plates to be 

 supported on two 4x4-inch pieces resting on top of hoops. Three 

 lx4-inch collar beams shall be spiked to end and middle rafters 

 to tie side of roof together. (See Fig. 12.) Fig. 16 shows an- 

 other simple construction of roof on a stave silo. 



