FARM STRUCTURES 



465 



If these essentials and desirable features are kept clearly 

 in mind, they will assist in comparing the various types of 

 silos now in general use. 



WOOD SILOS 



The Stave Silo. The commercial stave silo is in more 

 extensive use today, the country over, than any other type. 

 When properly made, the walls are air-and water-tight, 

 smooth and rigid, insuring 



the preservation of the 

 silage. 



The durability of the 

 stave silo depends largely 

 upon the kind and grade 

 of the material used in its 

 construction. Redwood, 

 cypress, Oregon fir, tama- 

 rack, and white and yel- 

 low pine are the more 

 common kinds of wood 

 used, and their respective 

 merits and durability rank 

 about in the order given. 



The Plain Stave Silo. 

 The stave silo made of 

 plain dimension lumber, 

 without being beveled or 

 grooved, is not satisfactory. 

 Such a silo is certainly 

 cheap, but is very unstable. The walls are not as tight as 

 when the staves are matched, and as soon as there is a little 

 shrinkage there is a tendency for the staves to fall from place 

 into the silo, and then the whole structure collapses. 



Fig. 294. A good stave silo well anchored. 



