Adams, Henry · London, New York [etc.] Longmans, Green, and Co. · leaf 39
through the same point as the other forces. … Next take a series of parallelforces such as concentratedloads on a beam, with theirreactions, as in Fig. 54. Thereciprocal polygon. Fig. 55,will appear as a straight line,but point 5 cannot yet be fixed,because the respective values ofthe reactions 4-5 and 6-1 areunknown. Take any pole 0 inFig. 55…
Building · Structural analysis (Engineering)
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