METHOD OF LAYING AND BOLTING SILL. Ill 



trating the pores of the lumber, and causing the silage to 

 dry on to the inner surface. 



Any style of door can be used, but an effective con- 

 tinuous door is shown in the illustration. If any of the 

 girts be cut out to make the door space larger, the re- 

 maining ones should be correspondingly reinforced. 



The making of a roof for such a silo is a simple mat- 

 ter, and a dormer window will assist in filling, although 



Fig. 26. Shoiving method of laying sill and bolting same 

 to foundation for an octagonal silo. 



a trap door may be used in case the filling be done with 

 a blower. Any style of siding may be used. 



Such a silo if well built will be durable, satisfactory, 

 have nearly all the advantages of a round silo, and in 

 addition will be a much more stable structure, requiring 

 no tightening of the hoops from time to time. 



Bills of materials for a silo built to 21-foot circle and 

 30 feet high are given below. The cost will, of course, 

 vary with the locality. 



