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 157
A B should fail, then C Dwould be in a state of tension. 257.— The pressure of inclined beams. The centre of gravi-ty of a uniform prism or cylinder, is in its axis, at the middle ofits length. In irregular bodies with plain sides, the cente ol 140 AMERICAN HOUSE-CARPENTER. gravity may be found by… … Fig. 193. An inclined post or strut, supporting some heavy pressure ap-plied at its upper end, as at Fig. 186, exerts a pressure at its footin the direction of its length, or nearly so. But when such abeam is loaded uniformly over its whole length, as the rafter of aroof, the pressure at its foot…
Carpentry · Architecture
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