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this is a slab foundation? i am not a home builder, and all the foundations i deal with are huge..90 foot deep piles, etc.
but if this is a slab foundation, and you cut a trench around the inside perimeter..are you not jeopardizing the integrity of the slab? i had a civil professor tell me that basement slab foundations are essentially "rafts" for the home to rest on. and that concluded that topic of the lecture. he never went any further than that..
maybe i am not picturing the issue here. sorry.
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poof! gone
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