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    ANSWERMEPLEASE1's Avatar
    ANSWERMEPLEASE1 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 3, 2014, 09:17 AM
    Construction questions
    I have a 17.5 by 8 2nd floor deck there are 3 posts for support and I want to go to to the deck is supported by 2 buy 8 boards I don't want it to sag I'm going with 6*6 posts and want to stay with the same 2*8 mat. What do you think to stop any sagging
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    May 3, 2014, 02:42 PM
    Your question is unclear. "I want to go to to the deck is .....by 2 buy 8"? Photo or drawing may help as we find it hard to determine exactly what you are trying to accomplish.
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
    current pert
    		  
    #3

    May 3, 2014, 03:10 PM
    There are national and local building codes for decks. The dimensions and posts are just 2 parts of it. The distance between the joists matters, as do beams or girders dimensions. So yes, you need the entire plan.
    And if you do this without a permit and are seen, you may find that it all has to come down to do the footings and piers to current code.
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