Garage Addition Sagging
I need help figuring out how to repair this.
I bought a home built in the 70's that had a garage added on in the 80's or 90's. I have had a structural engineer come look at this, but haven't gotten the report yet. The front beam (shown) is sagging. I'm pretty sure it's a doubled 2x10x16ft beam, but not sure because I haven't pulled the facia off. Inside the garage, all the ceiling joists are bowing in the same way. Thats kind of expected... they're 2x6x16ft. yes, that is correct - 2x6x16ft joists. Even the engineer was scratching his head over that.
Things of note: The base boards for the addition ARE NOT bolted down. the whole garage is sitting on a concrete slab with brick built up from the foundation. the Baseboards sit on top of the brick. The brick columns are most likely just brick - no center post.
My question to anyone that can help me: What would be the best way to fix this, without putting up a center carport support. I really enjoy not having a post to maneuver around.
During his visit, the engineer mentioned either installing a center beam underneath the 2x6 ceiling joists to take the weight inside the garage. That would possible require cutting the slap and pouring a new footer to support the beam.
For the carport, I think it needs a new, stronger front beam, and also stronger columns. that would require shoring each joist, removing the front beam and columns, then adding a larger beam and reinforced columns. Is that the right idea?
I also watched this great video explaining this situation, but I'd like reddits thoughts too:
Watch This Video Before Trying To Fix A Sagging Wood Framed Ceiling - Old Home Remodeling Part Four
https://www.youtube.com/watch?v=NWU6A5MxVnI