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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 512

An illustration from 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, leaf 512
D C-.. DC : AD, X \ y . \ y \ a — X, 469 y — X {a — x). (160.) Or, in a semicircle, 2i perpendicular to the ^/<^;;/^/^t terminatedby the diameter and the curve is a geometric mean, or meanproportional, between the two parts into zvJiicJi the perpendiculardivides the diameter. 444.—Circle: Radius… … B. The line A />, perpendicular to the diameter CE, isa mean proportional between the two parts CD ^nd DE{Art. 443) ; or, putting a r^ A D, b = CD, 2ind r equal theradius FE, we have— CD : AD :: AD : DEb : a : : a : 2 r — b, a = b{2 r-b\ a = 2 rb-b\ a ^-b — 2rb, a^ + b- r = ■ ^—. 2 b (161; 470…

Carpentry · Architecture · Building

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More pictures from 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

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