Hi All.
I am rehabbing a deck in southern Maine and would appreciate some ideas regarding solutions for the sinking and rotting posts, and inadequate footers. Deck dimensions and specs are below.
The deck is attached to the house, with one single beam made of three 2x6's sandwiched together. The deck is not level, seemingly due to the posts sinking. The beam needs to be raised about 1.75" to bring it to level.
The posts are 6x6 and are buried inside 10" concrete footers. The top of the footers are 12-15" below grade, and the wood exposed to the soil has areas of rot. I'm not sure how deep the posts are buried into the footers, and I'm not sure how deep the footers go - but presumably below the frost line.
I put the specs into this calculator and it seems that the current footers are significantly inadequate given the size of the deck, which likely explains the sinking. I don't know how old the footers & posts are, but they look newer than the original parts of the deck which are likely 30 years old.
Specs:
I am rehabbing a deck in southern Maine and would appreciate some ideas regarding solutions for the sinking and rotting posts, and inadequate footers. Deck dimensions and specs are below.
The deck is attached to the house, with one single beam made of three 2x6's sandwiched together. The deck is not level, seemingly due to the posts sinking. The beam needs to be raised about 1.75" to bring it to level.
The posts are 6x6 and are buried inside 10" concrete footers. The top of the footers are 12-15" below grade, and the wood exposed to the soil has areas of rot. I'm not sure how deep the posts are buried into the footers, and I'm not sure how deep the footers go - but presumably below the frost line.
I put the specs into this calculator and it seems that the current footers are significantly inadequate given the size of the deck, which likely explains the sinking. I don't know how old the footers & posts are, but they look newer than the original parts of the deck which are likely 30 years old.
Specs:
- Total size: 16'x12'. 16' is the length of the ledger and beam.
- Distance from ledger to center of beam: 9'4"
- Distance from beam to edge of deck: 2'6"
- Distance from outside post to edge of deck: 1'8"
- Distance between posts (center to center): 6'
- Footer size: 10" round
- Post size: 6x6 (Three posts)
- Beam size: Triple 2x6
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