A passive house / passivhaus in the USA

It’s in Illinois…
http://greenlineblog.com/smith-house-a-passive-house-in-illinois/

roof: 16 inch TJI * R-3.6 = R-57.6 exactly. And I think people often say it’s R-3.7 or R-3.8
wall: 12 inch TJI plus 2″ EPS rigid foam (R-12.5?) = approximately R-56 too.
slab: 14″ of EPS = 14 * 5 = R-70 roughly…

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