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 627
s problem will be found useful in proportioning the ca 1 2 3 4 5 i Fig. 402. members of a proposed cornice, in the same proportion asthose of a given cornice of another size. (See Art. 321.) Soof a pilaster, architrave, etc. 643-—Between Two Given Right Lines, to Find amean Proportional.—Let A and… … , Fig. 403. bd will be the mean proportional between A and B. ThatIS, ab is to bd ?iS> bd is to be. This is usually stated thus:ab : bd : : bd : be, and since the product of the meansequals the product of the extremes, therefore, abxbe^^bd^-This is shown geometrically at Art. 538. CONIC…
Carpentry · Architecture · Building
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