ny joint, hav- ing given their resultant there in posi- tion, direction and magnitude. This latter subject is not restricted in its ap- plications to arches alone, but applies to any plane joint or supposed section in a solid on which the resultant of all the external forces acting on the structure… … Kef erring to 'Fig. 1, we see that the resultants on the joints are not generally perpendicular to them : resolve them into components I. and IT. to the joints to which they correspond. The latter, or " shearing force," is resisted by the fric- The force + R at A. Fig. 2. is decora-
Engineering
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