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 409
romthis, as also from a corresponding point, n, draw the rays, i r andn s; from r, and from d, erect the perpendiculars, r s and do;through the points, e, s, and o, trace the curve as shown in thefigure ; then the extent of the shadow will be defined. 519.—To find the shadow thrown on a column, by… … Fig. 860. 520.—To find the shadows on the capital of a column. Thismay be done according to the principles explained in the examplesalready given; a quicker way >f doing it, however, is as followsIf we take into consideration one ray of light in connection withall those perpendicularly under and…
Carpentry · Architecture
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