I have red clay block foundation built in 1919. It hasn't moved a lot, it's bowed in about 1" on two walls. A few moisture issues that I've attempted to correct with grading and new gutter & downspout system.
This foundation has no rebar to my knowledge and it doesn't have a sump pump.
There's areas where I'd like to add posts underneath the floors for additional support and to reduce the bounce.
I guess I didn't realize that it weakens the foundation to replace the walls one or two at a time. There's a guy in my area who rebuilds concrete walls and he gave me a bid to replace two of them. The bid included going 2 feet deeper, rebar, damp-proofing, and the installation of drain tiles and a sump pump.
So would it be correct then for me to say that doing this would result in a weaker foundation and would do more harm than good?
Basically, I was just worried that my foundation is weak, crumbling, and inferior and I wanted to improve it.