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 152
mE) Fig. 5.Fig. 5 is the diagram, and it gives: (//£) = + 20.9 tons. i-^G) = — 4.0 tons. ROW STRING TRUSS. lOI With the head of the moving load at G, or with the movingload over the whole bridge : 7? = 2.5 x {W + w^^ 54.3 tons.In this case no chord stress is found by moments, but thediagram, Fig.… … Fig. 6. It gives: {RA) = — 100.1 tons.(^^) =-109.1 \bC) = - 103.0 \CD) = - 102.0 {RM) = + 84.6 tons.\mL) = + 93.6 {LK) = + 97.0 -{AM) = + 19.5 The results of these diagrams are collected and written inFig. I. Both web and chord stresses may be checked by momentsas follows. Moments about K give :…
Trusses · Bridges
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