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 89
spokes are rods capable of resisting tensiononly.—In this case it will be assumed that the spokes havesuch initial tension in them that when the loads are appliedall will still be in tension except the spoke a, whose stress willbe reduced just to zero. Let S\, S-i, etc., be the stresses in segments… … The stress in any other segment, Fig. i2ia.—The Ferris Wheel. Jbi — 636, Oi = — cosec -. 2 2 as Sn, may be found by passing the section pg, treating theportion to the right and taking moments about the centre ofthe wheel. This gives Ser — S,r + Wr sin a -j- Wr sin 2a -|- . . . -|- Wr sin 7a,*hence…
