The figure phone calls it an imaginary line, but it is not imaginary. It really is only "imaginary" with regard to being lots line, as it's not quite a bit line. But the gap that decides exterior wall hearth-resistance rankings and allowable opening percentages is based on the gap to https://container-kaufen98653.yomoblog.com/43055895/the-basic-principles-of-ibc-container-zubehor