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 97
ther the two quantities above the line,and dividing the product by the quantity under the line—the 6o CONSTRUCTION. quotient will be equal to the quantity represented by P, viz.,the pressure resisted by the timber C. Thus— 12000.3 0.5)360-0 720 = P. The strain upon the timber C is, therefore, equal… … Fig. 23. 74.—Iiiclinatioia of Supports Uaiequal.—In Fig. 23 thepressures in the two supports are unequal. The supportsare also unequal in length. The length of the supports,however, does not alter the amount of pressure from theconcentrated load supported; but generally long timbersare not so…
Carpentry · Architecture · Building
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