Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 181
Fig. 65. Fig. 66. Via. G7. … Fig. 68. and make light, by noticing on the plan what edges of the section arestruck by the i^rojections of the rays of light. That is, r s, s t, and t ureceive the rays of light; hence the surfaces on which these lines lieare light, r s is on the surface determincnl by the two lines passing 140…
Architecture · Building · Carpentry
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