How do I remove hydrostatic water pressure?
We purchased a home in central Missouri recently and we see evidence of slab/footing movement. The home is built halfway down a hill. It has a walkout basement with a large patio off the walkout. The downhill side of the walkout has risen about an inch. There is a perimeter drain along the front and down the downhill side until the foundation wall begins the step down toward the patio, so it covers the front and half of one side. If I extend the drain to the patio will that help with the water pressure? I need to mention that the soil is clay.
A foundation repair company lasered the basement so that’s how I know the corner has risen. They want to install a sump pump and lay lateral lines to several locations under the interior slab. That means jack hammering the slab to install the pump and lines. I would like to be sure that it would help before cutting up the slab. Can anything be done outside to get rid of all the water? We have no water in the basement. The foundation is 10″ poured concrete.
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