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 83
1 3 5 7 9 11 13 15 17 … Fig. 107. joints to the upper chord members are less than the ordinates to the parabola, since eachchord member is straight between joints. The horizontal components in the upper chord aretherefore not quite constant. For the lower chord, with centres of moments at upper chordpoints, the moments…