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Does anyone know of the best way to add a basement. We are converting an existing garage into living space and the homeowners would ideally like to add a basement under this new living space. I wonder if we can save the existing roof & wall structure or if it is just better to tear it all off. Also, what are safe distances away from existing crawl space walls to place a basement wall in Indiana clay type soil? Can a basement wall be somehow poured up & under the crawl footing?
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TIm what you are describing would probably require some serious underpinning.
Are you sure that the structure is worth saving and what is the exterior walls made of, size of the building, type of roof?
A lot more information is required to even give a guess as to the possible solution.
*I have seen basements added several times. Mostly though the result wasn't worth the cost and effort. Depending on soils and preferences one can either just jack up the house, suspend it while the basement is being constructed and lower it back to the basement. Or, one can excavate and build up to the existing building. But that was with existing houses that were in good condition and could not be pop-toped.If this is a garage, from what I saw these folks go through, I doubt it would be worth it. Go up, not down would be the best guess.
*We had a basement put in under our house in clay soil. Two treches were dug underneath the house with a little bulldozer and cribbing put in, jacked up and a poured wall 84" high went in. Two layers of block went on top of that leaving out where the beams that supported the house jacking, the house was lowered and the holes were filled in. Very successful.
*Tim : Where in Indiana are you talking about. Is it in a flood zone area such as Williams Creek. The job sounds familiar?
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Does anyone know of the best way to add a basement. We are converting an existing garage into living space and the homeowners would ideally like to add a basement under this new living space. I wonder if we can save the existing roof & wall structure or if it is just better to tear it all off. Also, what are safe distances away from existing crawl space walls to place a basement wall in Indiana clay type soil? Can a basement wall be somehow poured up & under the crawl footing?