The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 148
tons ; the amount being in-creased because of the oblique position of the supports. Thelines, e b, bf,fd and d e, compose what is called the parallelo-gram of forces. The oblique strains exerted by any one force,therefore, may always be ascertained, by making b coequal, (uponany scale of equal… … Fig. 184 132 AMERICAN HOUSE-CARPENTER. Correct ideas of the comparative pressure exerted upon timbersaccording to their position, will be readily formed by drawingvarious designs of framing, and estimating the several strains inaccordance with these principles. In Fig. 184, the struts areframed…
Carpentry · Architecture
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