Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 257
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 … ^;(a 92. Problem XXV.To construct the shadowon a right cylinder of ahorizontal line. a. It will be the arcof a circle of the sameradius as that of the cyl-inder.- .b. The center of thecircle will be on the axisof the cylinder as far be-low the given line as thatline is in front of the _^ axis.…
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