doogiemonster
Civil/Environmental
- Jul 8, 2022
- 1
Currently preforming demolition on an old deck. Structural members are good, but the concrete slab underneath the deck has completely heaved, and has been removed.
The project is in MN, on clay, and the deck was constructed in the late 1980s, and is about 700sf.
I've lived in the house for 3 years, and there has been no heaving or movement of the deck (contrary to the slab underneath which has been removed).
the original construction has the 6x6 posts, placed on 8" high concrete blocks, which are then on the footings.
We've excavated 1 footing, and depth is 50+ inches, so footings are good.
There are approximately 12-10' posts supporting the deck, so salvaging the existing footings is preferred
I'm over excavating the slab location, draintiling, and backfilling with aggregate prior to pouring a new concrete slab.
I'd like to simply extend the foooting and rebar all together, but I'm worried about water intrusion at the seam between to two pieces of concrete, and degradation over time.
Sketch of what i plan on building is provided.
The project is in MN, on clay, and the deck was constructed in the late 1980s, and is about 700sf.
I've lived in the house for 3 years, and there has been no heaving or movement of the deck (contrary to the slab underneath which has been removed).
the original construction has the 6x6 posts, placed on 8" high concrete blocks, which are then on the footings.
We've excavated 1 footing, and depth is 50+ inches, so footings are good.
There are approximately 12-10' posts supporting the deck, so salvaging the existing footings is preferred
I'm over excavating the slab location, draintiling, and backfilling with aggregate prior to pouring a new concrete slab.
I'd like to simply extend the foooting and rebar all together, but I'm worried about water intrusion at the seam between to two pieces of concrete, and degradation over time.
Sketch of what i plan on building is provided.
