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 548
eight, the value of THE CURVE FORMED BY ORDINATES. 505 / may be had by dividing both members of the equation by2 ;ir; by which we have— p = ^~.- NP 2X 2AN (A.) from which, TVPand A iV being known,/ may be computed.With the value of/, a constant quantity, determined, theequation is rendered… … Fig. 311. As an example: let it be required to compute the ordi-nates in a parabola in which the base, NP, equals 8 feet, andthe height, A N, equals 10 feet. With these values equation(A.) as above becomes— _ NP^ ^ ~ Jan 2 X 10 20 2 p — 6-4. 5o6 THE PARABOLA. Then, with this value in (B.) as above,…
Carpentry · Architecture · Building
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