I recently bought a home that is at least 100 years old. It sits on a rock wall foundation that has a bulge in an area that is about 10 feet long. I have corrected the grade on the exterior to allow water to run away from the house and I suspect that this was a major contributor to the area that is bulging. Also a bulkhead was added near this area in the last 10 to 20 years. I belive that the disruption of the original wall also contributed to the current problem. I’m wondering if anyone has a good idea on how to re-enforce the inside of the foundation so that the wall does not continue to bulge and eventually fail. Thanks for your input.
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Steel I beam shoring. DK about rock foundations at all, but when block walls bow, that's what we use here. Set the posts in the concrete and up into the joists with lots of reinforcement. There's gotta be someone near you that does foundation shoring. It's not a cure all to be sure. I don't know that it's even a complete guarantee against future movement, but it certainly slows things down.