The figure calls it an imaginary line, but it isn't really imaginary. It really is only "imaginary" with respect to remaining lots line, because it's not lots line. But the gap that establishes exterior wall hearth-resistance ratings and allowable opening percentages relies on the distance to this line, as if https://seecontainer-kaufen08754.thelateblog.com/36766057/not-known-facts-about-ibc-container-zubehor