The American house-carpenter; a treatise upon architecture, cornices and mouldings, framing, doors, windows, and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 280
an inclinedtvalt. Cast the ray, a &, (Fig. 319,) from the end of the shelf tothe face of the wall, and from b, draw b c, parallel to the shelf;cast the ray, d e, from the end of the shelf; then the lines, d eand e c, will define the shadow. These examples might be multiplied, but enough has… … 264 AMERICAN HOUSE-CARPENTER. 418.—To find the shadow of a projecting horizontal beam.From the points, a, a, &c., (Fig. 320,) 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, either on…
Carpentry · Architecture
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