ERECTION OF STAVE SILOS 55 



but not so far that the man at the top will have difficulty in 

 reaching down to unfasten it. 



ERECTING WITHOUT A SCAFFOLD 



While the most common practice is to use a scaffold, the 

 author has had better success with no scaffold at all, and he 

 very much prefers that method. This has been his experi- 

 ence with silos of various sizes. 



The first step, as in the other methods, is to secure the 

 door frame firmly in place. This makes it perfectly safe for 

 one man who can work handily some distance from the 

 ground, to go to the top of the door frame and manipulate the 

 clevis and pulley, secure the top end of the sections when they 

 are raised, and loosen the rope and pass it back down to the 

 men below. As in the previous method, the staves are 

 clamped together with three barrel staves if the silo staves 

 are full length; if not, it will be necessary to use four barrel 

 staves, one at the top, one at the bottom, and one at each 

 joint. No scaffold is in the way to interfere with the raising 

 of the sections. The clevis is simply hooked over the top of 

 the door frame and a section drawn up. 



After the bottom of the section is put in place it is a very 

 simple matter for the man above to loosen the rope, draw the 

 section over and place one end of the barrel stave to the door 

 frame for nailing. Nails should be set in the end of the barrel 

 staves before raising, as it is sometimes difficult for the man 

 at the top to get more than one hand free at a time. If there 

 happens to be much of a wind blowing it is well to nail a 

 scrap of 1-inch lumber on the ends of the staves and the top 

 of the door frame so as to hold the two together more 

 securely. The 1-inch pieces should extend pretty well across 

 the door frame so that two or more nails may be placed well 

 apart, thus stiffening the entire part that is already up. 



