Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 242
es not move in the revolution of the plane P. Th:)point 6^^^, the intersection of the projection of the ray R with 199 30 SHADES AND SHADOWS the j)rofile ^^t-, indicates that the ray E,^ has pierced the scotiasurface. If now the phxne P is revolved back to its original posi-tion, this point a^^… … 77. The remainder of the process is, from now on, sinuhirto the method just explained in the previous problem. See Fig. 32. We pass auxiliary planes, A, B, C, etc., (in this case parallelto II) through the scotia. We determine in plan their respective lines of intersectionwith the scotia: they…
Architecture · Building · Carpentry
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