My family currently purchased a new home and the rear deck (about 6ft off the ground) currently is held up using 4x4s. The joists are about 12ft tall and the deck is about 25ft wide.
Unfortunately, this did not pass the city inspection and the seller suggested putting 6x6s on the bottom the replace the lower section of the 4x4 and then leaving the existing 4x4s on top (we have a metal railing that would need to be cut/adjusted if it was 6x6 all the way up.
Is this safe? Would the load bearing work the same way as if it was 6x6 all the way up?
Edit: to answer some questions- this is new construction and the city did not sign off on it. They said either an AOR letter from the architect is required saying it’s ok, or a change to the 6x6 posts as it shows in the original blueprints.