I have a garage structure build in 1930 that has a cracked foundation throughout. I understand that whatever I do, without demolishing the structure and repouring a new foundation, will call for further work later down the road.
I have a 20' load bearing wall that sits on a crack in the foundation that is about 1/8" thick. I can visually tell that there is about a 1/8" drop and slope where the crack is. Since the wall is damaged by termites on one end, upper and lower, I have decided to replace the wall structure.
If I jack the wall, use shore posts to support and remove the structure, would it be completely stupid if I framed out a 3 1/2" x 3 1/2" channel that is level and poured a concrete rise with j bolts? I thought that shimming the gaps would be easier but I don't have a comfortable feeling about going this route. My logic is that I feel a level concrete rise with rebar will provide a more rigid, stable temporary solution.
I would make the simple recommendation to hire a local professional engineer that specializes in structures and have them evaluate your current conditions. They will be able to determine any issues you may have and prepare a proper course of action for you to take. They'll get it right to start with and you won't be trying various suggestions only to find out they didn't work.
Will save you time and money in the long run. just my thoughts ......
"You get what you pay for, and sometimes free costs more!"