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AGRICULTURAL ENGINEERING 



flooring, and place the studding on a bottom plate nailed to 

 the flooring. To support the studding well, the rough floor- 

 ing should be laid diagonally; otherwise all the studding on 

 one side will be attached to one board. 



It is very difficult to prevent a one-and-a-half story 

 house from sagging, due to the thrust of the rafters on the 

 plate, which cannot be held together. 



Bridging. Bridging consists of diagonal strips, usually 

 1x3 inches in cross-section, nailed between the floor joists to 



Fig. 293. A concrete block house representing a good type for the farm. 



stiffen and strengthen them. Joists 8 to 16 feet long should 

 be bridged once; those 18 to 24 feet long, twice. The floor 

 should be leveled as the bridging is nailed fast. Two lOd 

 nails should be used at each end of the bridging pieces. 



The studs should extend from sill to plate in interior walls 

 the same as for outside walls, in order that shrinkage will 

 be uniform. 



