Thanks, This season goal is to underpin two wall of existing concrete frost footings to full 9' depth with block(just finished) and complete other two new walls with perm wood foundation. Pretty standard building but a little over engineered in the footing/floor drainage and ability to hold up a 4" poured in place arched radiant first floor for both passive and radiant high mass. Thank goodness for Ebay/Craig's list or the budget would already be blown on stainless steel nails, lol.
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