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I am building a 12 x 16 deck between two houses. What I am reading if I understand it right on figuring joists and spans is if you use a 2 x 10 you can span 16.1 feet from ledger board to post on a footer for 40psf live load and 10psf dead load. Would it be the same if I were going from ledger board to ledger board or is that too much pull on the ledger boards.
 

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If you're spanning 16 feet between 2 houses, I would pour footings and put a support beam mid span.
 

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Yeah...max on a 2x10 is 15'10". IMHO that length span would be way too bouncy and I dont think you'd be happy with the result.

Do as Ron suggests.
 

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