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 190
Fig. 2-1 of one of the ribs. Then take e f for the transverse axis andtwice the rise, o g, of the dome for the conjugate, and describe,(according to Art. 115, 116, &c.,) the semi-ellipse, e g f, whichwill be the curve required for the rib, e g f. The other ribs arefound in the same manner. b 4 … Fig. 222. 310.— To find the shape of the covering for a sphericaldome. Let A, (Fig. 222,) be the plan and B the section of agiven dome. From a, draw a c, at right angles to a b ; find thestretch-out, {Art, 92,) of o b, and make d c equal to it; divide thearc, 0 6, and the line, d c, each into a…
Carpentry · Architecture
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