Concrete Silos 



151 



in the standard 8x8x16 inch size in practically all the 

 faces designed by this company for straight building 

 blocks. These silo attachments can be set on the 

 standard Ideal block machine base outfit, and the silo 

 blocks are cast with two 4x6 inch core openings the 

 same as the building blocks. Attachments are pro- 

 vided for making blocks on a 5, 7 or 9-foot radius. 



As each block is cast, a piece of half round iron 

 makes a groove in the top, about 1 inch from the out- 

 side face, this groove accommodating the reinforcing 

 ring when the blocks are laid up. These rings are 

 fastened at the ends to the 

 door frames as shown in the 

 illustration ; or if the builder 

 has at hand the proper dies 

 for cutting threads, he can 

 thread the ends of each ring 

 and draw the ring to the 

 proper tension with a nut. 



The door frames consist of 

 U-bars for uprights con- 

 nected at 3-foot intervals by 

 4-iiich I-beams. The uprights 

 are set just the thickness of 

 the door from the inner face 

 of the block, so that when 

 the door is in place the inte- 

 rior will present a smooth 

 surface. 



It is recommended that the climax Blocks 



inside of the silo be plastered with cement mortar, ap- 

 plied, preferably with a trowel, and then going over the 

 entire surface with a stiff brush and cement grout. 



