Skinner, Frank W. (Frank Woodward), 1858-1932 · New York, McGraw · leaf 325
ain weighing 3000 lbs. per lin. ft., assum-ing a coefficient of friction of 20 per cent of the wheel load forthe friction between wheels and rails. The lateral system isproportioned for a wind pressure of 750 lbs. per lin. ft. Thegirders are proportioned for a shearing stress of 7000 lbs. anda… … o o ■<bix6x^L 8
Bridges
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