The American house-carpenter; a treatise on the art of building, and the strength of materials (1873)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 405
Fig. 85L 390 AMERICAN HOUSE-CARPENTER. 511.— To Jind the shadow of a projecting horizontal beamFrom the 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 beam be in-clined,… … Fig. 862. 512.—To Jind the shadow in a recess. From the point, a,(Fig. 352,) in the plan, and b in the elevation, draw th • rays, a cand b e; from c, erect the perpendicular, c e, and fn,ni e, drawthe horizontal line, e d; then the lines, c e and e d, will show theextent of the shadow. This applies…
Carpentry · Architecture
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