u/Cool_Potential1957

Hi all I appreciate any tips on this.
I have a 2 story deck (picture 1) and the foundation concrete on one side has sunk (picture 2), you can see in picture 3 the post on the other side of the deck which has not sunk. The concrete foundation i believe was poured correctly, i'm thinking maybe the carboard form was sitting on some wood or something causing the sinking over time.

Do i have to dig this all out and re-pour? I've considered cutting the wooden deck post and pouring an above ground foundation slab that sits on the old concrete that sunk. I'd include re-bar and the slab would be 2 ft X 2 ft and 8 inches high. Would this work? It would be sure easier than digging out the foundation and re-pouring

Thank you

Is this amount of rust on a 4 year old condenser considered to be normal? It's not just the top grill its inside too? Anything I can do to protect it? THanks