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You have two issues to contend with. First is that 16 feet is just a bit too tight for two floors. Sure, we usually use 12 inch beams but that's just the structure - you need an actual floor on top and usually a ceiling below. Even if we ignore building codes we will still produce two rather cramped levels. Second is what's actually holding the other end ...


1

As I understand it (second hand from friends in construction) you must maintain a 45-degree slope from the top of the footing (the footing must be buried according to frost depth rules if your crawlspace gets below freezing), whether that be a retaining wall or a dirt slope, you can't cut into that 45-degree or you risk undermining the foundation. A soil ...



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