Dik,
I'm in MN so 42" is the requirement and we're at about 48 simply because that was the length of the sonotubes. I'm not worried about heave, but am worried about it sinking over time.
(and as to other responses, we did beef up the beams already from what is on the plan so no worries there)
Homeowner here. Here's the story:
I hired a guy to make drawings and size out the materials for my deck, which I then submitted to the city for my permit. The permit was approved so we dug our footing holes, had the footing inspection, poured concrete, and started framing.
I called for a...
