Discussion Forum
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Elliptical dome, elliptical coffer trick
On shallow ellipses, the method of using two foci and a loop of string does not work. The stretch of the string will lead to inaccurate results. Even dacron, steel,…
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Exterior air barrier makes a tight house
I would like to discuss the exterior air barrier approach to constructing an air tight building. I'm splitting this off of a discussion we were having about unvented attics, in the…