The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 403
Fig. 851. a90 AMERICAN HOUSE-CARPENTER. 511.—To find the shadow of a projecting horizontal beamFrom trie points, a, a, &c., {Fig. 351,) cast rays upon the wall .the intersections, e, e, e, of those rays with the perpendicularsdrawn from the plan, will define the shadow. If the beain be… … Fig. 852. 512.—To find the shadow in a recess. From th< point, a,[Fig. 352,) in the plan, and h in the elevation, draw th rays, a cand b e; from c, erect the perpendicular, c e, and frua e, drawthe horizontal line, e d ; then the lines, c e and e d, will show theextent of the shadow. This…
Carpentry · Architecture
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