Skinner, Frank W. (Frank Woodward), 1858-1932 · New York, McGraw · leaf 284
V u n ao < (O channel span, namely: one 1521-ton engine followed by a trainload weighing 5000 lbs. per lin. it. The dead load was assumedto be 2200 lbs. per lin. ft. The track is on a 12-degree curvewith the center line 21 ft. from the center of the inside girder APPROACHES 267 (. ^ 200C.to C.… … I-Cov. Pi WV^Z-6/6xiLS at the end. Allowance has been made, consequently, for the centrifugal force due to a train speed of 30 miles an hour, which was considered as equally divided between the top and bottom flanges. Spans 3 and $ are nearly duplicate, and each is 113 ft. 8 in. long on centers of…
Bridges
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