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 616
Fig. 383. Fig. 384. Fig. 385. upon ac (as at Fig: 384) mark the points d and /. Thismethod of locating the angles of a polygon is an approxima-tion sufficiently near for man)^ purposes; it is based uponthe like principle with the method of obtaining a right linenearly equal to a circle {Art. 524).… … Fig. 386. Fig. 387. Fig. 388 531.—Upon a Given Line to Bcscribe any RegularPolygon.—Let ab {Figs. 386, 387, and 388) be given lines,equal to a side of the required figure. From b draw ^<: atright angles to ^ <^; upon a and b, with a b for radius, describethe arcs acd and feb\ divide ac into…
Carpentry · Architecture · Building
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