Adding Mudroom in exisiting garage - Foundation question
I have searched this site and I have not found an answer to this question directly.
I would like to add a mudroom in my garage 10x4. This will reduce the depth of the garage by 4 feet. i have most everything worked out. My 1 question is some from of foundation. i was planning on digging out 2 10" holes for sontubes (filled with concrete) and running a double 2x8 across them. Then I will hang joists between these and a ledger hanging on the back wall of the garage. Framing and other fun to follow. My question is around the sonotubes. Are these suitable for this installation? Any helpful hints on the best way to dig out out the enevitable stones that will be in the holes? Is it OK to lay the 2x8's on the sonotubes or do I need to attached the lumber to the concrete somehome?