THE SILO. 



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or 6 perch of stone an3 450 pounds of cement and 3^ yards sand; 

 or 3 yards gravel or crushed rock and 1,500 pounds of cement and one 

 and two-third yards of sand. Mix the cement mortar i part cement 

 to 3 parts sand ; for concrete use i cement, 3 sand and 6 gravel or 

 crushed rock — the crushed rock is stronger than the gravel. Imbed 

 in the wall a rope made of 4 strands of No. 9 wire, twisted, or, if more 

 convenient, two or three circles of old barb wire. This would go 

 well in the concrete wall. For the plaster there will be needed about 

 5,000 pounds cement and 4 yards of clean sand. The plaster is put 

 on about half an inch thick. 



For the superstructure, not including the roof, there will be needed 

 55 pieces, 2x4, 14 feet long, and 44 pieces 16 feet long. These are for 

 studs, sill and plate. For sheeting, one-half inch thick and 4 inches 



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Figure 9. A cut showing construction of the cement-lined silo. Onto the 2x4 stud 

 is nailed the half-inch lining, and onto that the beveled lath, then the whole thing l3 

 plastered with cement mortar. 



wide, about i,6oo feet unmatched. Lath needed, 52 bundles plain house 

 lath or its equivalent of beveled lath made of 3-inch batting, ripped 

 and corners on one side taken off. The University of Illinois reports 

 excellent success with common house lath nailed flat against the sheeting 



