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 234
ends, the end tangents are fixed as well as the points Aand B; hence, for each end referred to the other, each of the equations (7), (8), and (9) reduceto zero. ARCH BRIDGES. PARABOLIC ARCH OF TWO HINGES; VARIABLE MOMENT OF INERTIA. 189. The Equilibrium Polygon *—In Fig. 251, let r = rise; c =… … Fig. 251. B are zero we know that the equilibrium polygon for the load P must pass through these points. We also have the further condition from eq. (10) that / = O. The modulus of elasticity, E, will be taken as constant; and if H is the pole distance andis the vertical ordinate between the…
