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					Originally Posted by  sphelps
					 
				 
				You can get steel I-beams from Varsteel or some kind of steel supplier in the area. 
 
This is what I mean by creating the plywood bulkhead 
  
Start with joist
  
 
Add plywood layer to cover entire span
  
 
Repeat staggering seams
  
 
Repeat again staggering seams and do other side.
  
 
You're simply increasing the strength of the beams (joists). By adding 3-4 layers each side on both supporting joists your floor will be strong enough to support the load without deflection.  
			
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 AWESOME IDEA!! I like it!!