94 HOW TO BUILD A SILO. 



be securely bolted to the top and one to the bottom of 

 where the door is to be cut. (See Fig. 13.) After the 

 bolting, the door may be sawed out, and it is then ready 

 for use. When set in place at time of filling the silo a 

 piece of tarred paper inserted at the top and bottom will 

 fill the opening made by the saw and prevent the entrance 

 of any air around the door. 



Another Door for Stave Silo. 



Silage being heavy to handle, and pitch up, has made 

 continuous doors a popular feature of a few factory-built 

 silos, as it is much easier to get the silage out of the silo 

 for feeding. The illustration, Fig. 17, shows a method of 

 making a door in homemade silos which is continuous with 

 the exception of a narrow brace piece extending across 

 the opening, under each hoop, to give rigidity to the struc- 

 ture. These pieces should be securely toe-nailed at each 

 end to the staves. The jamb pieces, e, e, should be 2 

 inches thick, beveled off on the side away from the door, 

 securely spiked to the inside of the stave, as shown, so as 

 to leave a rabbet 2x2 inches. Great care should be taken 

 to have these pieces exactly the same distance apart 

 throughout their entire length, so that the door boards, 

 being sawed the exact length, will fit alike and properly 

 all the way up, and if care be taken in this regard it will 

 not be necessary to replace them in the same order at 

 each successive filling of the silo. The door boards should 

 be matched, two inches thick the same as the staves, and 

 if surfaced and well seasoned there need be no fear of the 

 silage spoiling around such a door. A strip of acid and 

 water-proof paper may be placed in the rabbet, between 

 the ends of the door boards and the stave, as an extra 

 precaution, but if the carpenter work is well done it is not 

 absolutely necessary. 



Such a door can be adapted to any form of stave silo, 

 and, if not more than two feet wide, the fact that the door 

 section is straight instead of curved will make no differ- 

 ence. 



