10 SILOS: CONSTRUCTION AND SERVICE 



Development of the Masonry Silo. The use of wood and 

 masonry in silo construction commenced at about the same 

 time in the United States, namely, in the '70's. However, 

 steel is necessary in the construction of masonry silos, and 

 the lack of this general knowledge, together with the cost of 

 steel, caused many serious failures. For this reason rapid 

 advancement in the development of masonry silos has 

 occurred only since the beginning of the present century. 

 Masonry silos were originally built with very thick walls, 

 2 feet or even more being a common thickness. By the use 

 of a combination of steel and masonry, 3 to 6 inches is suffici- 

 ent. The establishment of this fact has, of course, been a 

 great factor in the development of an economical masonry 

 silo. 



The general features of the modern silo are greater height, 

 smaller diameter, and convenience in construction and use. 



