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 289
equation 7^ = —=—it is seen that the scale for the ■I h forces does not affect the height of any joint of the polygon ;it depends only on the scale according to which x or the hor-izontal span is drawn. Let the line PP be drawn parallel to EC, and let P bethe pole of a new equilibrium polygon ; the… … the same, 7> cannot vary. Hence, any movement of the poleparallel to the load line does not chafige the vertical dimensions EQUILIBRIUM POLYGONS. 23:
Trusses · Bridges
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
