ERECTION OF STAVE SILOS 57 



The second section may next be raised and secured to 

 place with the barrel staves. After this is done, ordinarily, 

 it is best to take the pulley and clevis to the other side of the 

 door frame and set up two sections there in exactly the same 

 manner. Next, a 2x6 or 2x8 (nearest door in Fig. 15) is 

 placed across the silo and nailed to the top of the last stave 

 on each side. If the wind is blowing seriously it will be advis- 

 able to stretch No. 9 wires from the ends of these 2x6 's out 

 to stakes driven in the ground some distance away and 

 approximately in line with the 2x6's. Now two more sec- 

 tions may be raised, and secured by means of one-inch scraps 

 of lumber and nailed to the 2x6 in the same manner as the 

 first section was secured to the door frame. These two sec- 

 tions should be placed on opposite sides of the door frame, 

 and another piece of 2x6 lumber placed across the silo as 

 before shown in Fig. 15. 



Closing the Circle. It is usually rather difficult to decide 

 just what size of circle to set the staves on* It is necessary 

 to allow for the staves going together rather loosely, yet it is 

 difficult to know just how much allowance to make. For 

 this reason, when the silo is about half erected, some meas- 

 urements should be taken to find out whether or not the 

 staves remaining to be used will close the circle properly. 

 If not, the staves must be set a little further out, or a little 

 closer in, as the case may require. After the circle is closed 

 by raising sections alternately on each side of the door frame, 

 nail another scrap of lumber on top of the last staves erected, 

 tying both sides securely together. This system of bracing 

 is shown in Fig. 15. No. 9 guy wires should be used as 

 needed, depending, of course, upon the weather. 



Putting on the Hoops. The staves are now ready for the 

 hoops. Put them on, commencing with the second from the 

 bottom. A short piece of hoop is always provided to use 



