The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 229
are readily foundafter the equilibrium polygon is once drawn. In a solid beam the fibre stresses result directly from the above equations. In a bracedarch, however. Fig. 242, the stresses in the members cut by any section are more readily foundby the ordinary methods. Thus the stress in AB is equal… … Fig. 242. Fig. 243. chords AB and Z>^7are not parallel, then the stress in AC \s found by getting the moment ofR about the intersection of AB and DC, and dividing by the lever arm of AC. In a builtbeam, Fig. 243, in which the direct stress and moment are taken entirely by the flangesand the…
