Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 256
visible shadeelement. Let J=the distance between the axis of the cylinderand the plane on which the shadow falls, to be obtained from theplan. Then the distance, between the visible shade element and itsshadow on the given plane, will be equal to rt-fJ. The width of the shadow on the given plane… … and np can be coostructed by Problem XXIII. Draw RS the 210 SHADES AND SHADOWS 41 shadow of the shade element nj), parallel to n2>, and distant fromit « + li inches. The width of the shadow on the given plane will be 4 times the distance F1G*45
Architecture · Building · Carpentry
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