60 



HOW TO BUILD A SILO. 



the hoops are put in place. However, if it becomes necessary for 

 any reason to delay for .any considerable time the putting on of 

 the hoops, boards should be nailed across the top of the silo. 



When it is found impossible to secure staves of the full length 

 desired, a joint or splice must be made. 



For a silo 30 feet deep, staves 20 feet in length may be used. 

 A part of these should be used their full length and part should 

 be sawed through the middle, thus making staves of 20 and 10 

 feet length. In setting them up the ends which meet at the splice 

 should be squared and toe-nailed securely together. They should 

 alternate so that first a long stave is at the bottom then a short 

 one, thus breaking joints at 10 -feet and 20 feet from the base. 



For the hoops, %-inch round iron or steel rods are recom- 

 mended, although cheaper substitutes have been found satisfac- 

 tory. Each hoop should be in three sections for a silo 12 feet in 

 diameter, in four sections for a silo 16 feet in diameter. If the 

 method of construction shown in Fig. 17 is followed, the hoops 



Fig. 18. Shows how barrel staves may be used in setting up 

 silo. They should be removed before the silo is filled. 



