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 39
s P, . . . act upon any rigidstructure ACB, Fig. 37, resting upon abut-ments at A and B (not shown in the figure).Suppose the end B to rest upon rollers and theend A to be fixed ; the reaction at B will bevertical, that at A unknown in direction. Construct the force polygon, Fig. {b), as in the… … y.t H W r \ 1 / Fig. 37. APPfJCATTON OF THE LAWS OF EQUILIBRIUM. 23 called the closing line of the equilibrium polygon, and On parallel to it, meeting a verticalthrough 5, at n. Join We have now resolved P into the components 5;/ and nO, and P into On and n\. Replacing P and P by their components,…
