The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others (1880)
Hatfield, R. G. (Robert Griffith), 1815-1879, Hatfield, O. P., ed · New York, J. Wiley & sons · leaf 370
-gate diameters of the required ellipse. To describe thecurve by intersection of lines, proceed as directed at Art. THE GRECIAN ECHINUS. 327 551 and note; by a trammel, see Art. 549 ; and to find thefoci, in order to describe it with a string, see Art. 548. 313.—The Grecian i:clnnu§.—Figs. 192 to… … fd V / Fig. 196. Fig. 197. are drawn. In Figs. 192 and 193 the lines a d Sind dc are semi-axes, the tangents, ab and be, being at right angles to eachother. To draw the curve, see ^r/. 551. In Fig. 197 thecurve is parabolical, and is drawn according to Art. 560. InFigs. 198 and 199 the curve is…
Carpentry · Architecture · Building
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