Concrete Silos 107 



tion and against the lath on the outside. This form 

 must now be carefully plumbed and held in place by 

 short braces to the posts and planking of the scaf- 

 fold. All braces must be nailed to the form on the 

 inside so as not to interfere with the subsequent plac- 

 ing of the metal lath or other material. 



The 2x4 studding should be prepared for raising 

 by being spliced together to a length exactly of 30 

 feet, or the exact height of the silo above the founda- 

 tion. The splice may be made by lapping the ends and 

 nailing them together with three 16-penny nails. 



The plate pieces, which have been sawed out in 

 accordance with the figures given, should now be 

 hoisted to the top of the platform of the scaffold. Light 

 gauges should be prepared for use in space the 2x4 's. 

 It is a good plan to have the gauge used on the top 

 platform notched at one end so that it may be used in 

 placing the inner edge of the 2x4 2 inches out from 

 the inner edge of the plate. 



In raising the studding to place, begin operations 

 by taking one of the plate pieces and nailing it across 

 the top of the door form, which is already in place, the 

 inside edge being placed 2 inches in from the edge of 

 the 2x4 's. A single 8-penny nail driven into the top 

 of each 2x4 is sufficient to hold this in place. Now 

 build out two or three sections of the plate, breaking 

 joints and doubling, securely nailing together the two 

 layers with 6-penny nails. In raising the 2x4 's, a light 

 line is a great convenience, one end of it being made 

 fast to the top end of the 2x4's with a timber hitch, so 

 that one of the men on top can pull the stick up, while 

 the man below carries the foot toward the scaffold 

 and sets it in the proper place on the foundation. This 



