A course on the stresses in bridge and roof trusses, arched ribs and suspension bridges (1904)
Burr, William H. (William Hubert), 1861-1934 · New York : Wiley · leaf 290
the same, 7> cannot vary. Hence, any movement of the poleparallel to the load line does not chafige the vertical dimensions EQUILIBRIUM POLYGONS. 23: … ■of the equilibrium polygon. But if the pole distance is changed,the vertical di>nensions are changed in the inverse ratio. The determination of the deflection polygon of an archedrib with ends fixed, involves the use of an equilibrium poly-gon, similar to that required for asystem of forces…
Trusses · Bridges
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