BAretired, you are absolutely correct about Sonotube's being cardboard.. hardly a circle shape when you get them from the store.
What I meant was that the deck would be supported by columns/vertical beams attached from the deck beam to the top of the concrete. In the first example, the sonotube...
The existing structure is on a poured wall foundation that goes down 4'. So the options are either:
1) 4 sonotubes going down 4' to footer. Deck posts sit on sonotubes. Slab is floating independent of sonotubes.
2) Trench pour (2' wide trench that goes down 4') filled with concrete. Slab is...
Hi Jayrod12, thank you for the response. Yes - the raised deck would connect to the existing residence with a ledger board (deck is 38' long). But the slab would not tie into the residence, just tie into the footer "trench" to support the posts for the deck, which would be below the frost line...
Hey everyone,
I am working on a project that involves attaching a 2nd story deck to an existing building (residential). The existing building has a poured frost wall in northeast climate (NY).
For the deck, current plans are to dig footers for 4 sonotubes using bigfoot bf28 footers and then...
