DOOR OF STAVE SILO. 



87 



Hoops. Hoops shall be made from two pieces of 

 %-inch diameter round iron with upset ends, threaded 

 8 inches, with nut and washer at each end; as a support 

 for the hoops a piece of 4x6 shall be substituted for 

 a stave on opposite sides and holes bored in it and the 

 ends of hoops passed through these holes and tightened 

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

 twelve in number starting at the bottom 6 inches apart 

 and increasing in distance 6 inches between each hoop 



C 



Fig. 13. Appearance of door in stave silo after being sawed 

 out, and side viezv in place. The opening is largest on 

 the inside of silo. (Clinton.} 



