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 613
e circle that circumscribes the figure. For theradius is equal to a chord of an arc of 60 degrees; and, asevery circle is supposed to be divided into 360 degrees, thereis just 6 times 60, or 6 arcs of 60 degrees, in the whole cir-cumference. A line drawn from each angle of the hexagon 570 PRACTICAL… … a d and b c; upon a, b, c, and d, with a e for radius, describearcs cutting the sides of the square at i, 2, 3, 4, 5, 6, 7, and 8 ;join I and 2, 3 and 4, 5 and 6, etc., and the figure is com-pleted. In order to eight-square a hand-rail, or any piece that is
Carpentry · Architecture · Building
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