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 399
Fig. S42. 504.—To find the shadow of a shelf having one end acute orobtuse angled. Fig. 342 shows the plan and elevation of anacute-angled shelf. Find the line, e g, as before ; from a, erectthe perpendicular, ah ; join 6 and e; then h e and e g will definethe boundary of shadow. … Fig. 848. 505.—To find the shadow cast hy an inclined shelf. In Fig.343, the plan and elevation of such a shelf is shown, having alsoone end wider than the other. Proceed as directed for findingthe shadows of Fig. 341, and find the points, d and c ; then a danl c? c win be the shadow required. If…
Carpentry · Architecture
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