Concrete Silos 95 



The boom is supported by two %-inch rods with 

 turnbuckles which swing around the center mast. It 

 carries a car or traveler which carries the hoisting 

 cable and cement bucket. 



The derrick is also used as a means of support for 

 the workman who uncouples the outer forms when 

 they are moved up. 



A sufficient area of steel is provided in the cross 

 wires of triangle mesh reinforcement to prevent tem- 

 perature cracks, thereby eliminating the necessity of 

 laying additional reinforcement at right angles to the 

 longitudinal or tension members. The common width 

 is 54 inches. This allows for a 6-inch lap on each 4-foot 

 section poured. 



The -Conklin silos are equipped with continuous 

 doors, 30x30 inches, of 1-inch lumber, with tar paper 

 between, with felt gasket between door and cement. 

 The doors are set in a 2-inch cement jamb, forming a 

 solid construction. Ladder irons are placed about 

 every 30 inches, made of 1-inch mild steel. 



The Conklin equipment is adapted to build the non- 

 continuous type of doorway by leaving out the steel 

 forms for blocking off the continuous doorway and 

 adding the special form in the chute for making the 

 non-continuous. By using this special form, any style 

 of door (elliptical or square) can be used, by placing 

 the door form between the special chute form and the 

 inside silo form. 



The 2-E Flexible Silo Form. This form is 5 feet in 

 length and build either a hollow or solid wall. In 

 building the silo the form is placed on the foundation 

 and filled and tamped, then moved to a new location 

 and filled again, the operation being repeated until the 



