Construction of All-Wood Silos. 



409 



CONSTRUCTION OF ALL WOOD SILOS. 



Up to the present 'time more silos have been built of wood 

 than of any other material, and since 1891, the majority of 

 wood silos built have been after the model represented in 

 Fig. 202. Very few silos of the rectangular type are now 

 built unless they be of stone. 



509. Foundation. There should be a good, substantial 

 masonry foundation for all forms of wood silos and the 

 woodwork should everywhere be at least 12 inches above 

 the earth to prevent decay from dampness. There are few 

 conditions where it will not be desirable to have the bottom 

 of the silo 3 feet or more below the feeding floor of the 

 stable and this will require not less than 4 to 6 feet of stone, 

 brick, or concrete wall. For a silo 30 feet deep the founda- 

 tion wall of stone should be 1.5 to 2 feot thick. 



Fio. 203. Showing two methods of placing the wood, brick lined or 

 lathed and plastered silo on a stone foundation. A shows the silo 

 Bet with upper portion flush with the inside of the stone wall, and 

 11 shows the- upper portion flush with the outside of the stone wall. 



The inside of the foundation wall may be made flush 

 with the woodwork above, as represented in Fig. 203 A, or 



