ANSWERMEPLEASE1
May 3, 2014, 09:17 AM
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
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
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.