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 235
and hence determinesthe third point in the equilibrium polygon. As the position of the load varies, eq. (19) is theequation of the locus of the point k. Hence if this curve be constructed, the equilibriumpolygon for any load is drawn by simply joining the points A and B with the intersection ofthe… … A B Fig. 252. the ends of the arch. For the piece CD, with centre of moments at F, a load at k producesno stress, while all loads to the right produce tension and all loads to the left compression.For FE, all loads to the right of k cause compression and all loads to the left tension. For ARCH…
