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 553
ng rectangle. For example: if the height,AE {Fig. 312), equals 8 feet, and EC, the base, equals 12feet, then the area of the part included within the figureA PCE A equals f of 8 x 12 = | x 96 = 64 feet; or, it is equalto f of the rectangle A B C E. SECTION XIV.—TRIGONOMETRY. 473.—Riglit-Ang^led… … Fig. 313. if the sides a and b {Fig. 313) are given, c, the third side,may be computed from equation (115.)— Extracting the square root, we have— c = Vd-U-a\ When the hypothenuse and one side are given, by transposi-tion of the factors in (115.), we have— a c- b; or- a= Vc- — bb = c Vc a a (A.)…
Carpentry · Architecture · Building
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