The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 178
forces, e l f d ; then h d^ the diagonal of the parallelogram,will be the direction^ and its length, 9*255 will be the amounty FRAMING. 165 of the united pressures of A and of B. The line, h d, istermed the resultant of the two forces, 5/and he. If J. andJS are to be supported by one post, C, the… … Fig. 213. 271.—Another example : let J^ig. 213 represent a piece offraming commonly called a crane, which is used for hoistingheavy weights by means of the rope. B hf, which passes overa pulley at h. This is similar to I^ig. 210 and 211, yet it ismaterially different. In those figures, the strain…
Carpentry · Architecture
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