OCTAGONAL SILO. 



109 



be constructed by anyone handy with tools with the assist- 

 ance of the ordinary farm help. 



The foundation should be of stone or brick as de- 

 scribed for various other forms of silos, and should be 

 laid out with proper dimensions for the size decided upon. 

 Brief details are here given for an octagonal silo of about 

 the same capacity as a round silo, 20 feet in diameter and 

 of equal height. 



If the foundation is laid out so that the corners are 

 in the circumference of a circle 21 feet in diameter the 

 horizontal girts will be about 8 feet long, and will be much 

 stronger and better able to withstand the lateral pressure 

 that the sides of a square silo of equal capacity. Details 

 of construction are shown in the drawings, Figs. 25 and 26. 

 The girts should be 3x8 in. and spiked at the corners 



Fig. 25. Perspective, showing construction of frame, and 

 double lining with paper between. The door is made, of 

 two thicknesses with paper between, as shown. 



