Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 147
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 into a third piece, and the weight suspended from that.The struts are placed at a different angle… … Fig.185. 249.—In Fig. 185, the weight, TF, exerts a pressure on thestruts in the direction of their length; their feet, n, n, have, there-fore, a tendency to move in the direction, n o, and would so move,were they not opposed by a suifficient resistance from the blocks,A and A. If a piece of each…
Carpentry · Architecture
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