Skinner, Frank W. (Frank Woodward), 1858-1932 · New York, McGraw · leaf 315
force provided for by columnbracing was assumed to be due to two trains moving in thesame direction on the outside tracks, and having a coefficientof friction of ^ the weight between the rails and wheels. Ahorizontal force of 750 lbs. per lin. ft. was assumed to act atthe base of the rails. The… … i-l^Rods ■ Transverse Section at Tower. the girders were proportioned for maximum stresses of 10,000lbs. per sq. in. Rivets in shear 9000 lbs., in bearing, 14,000 lbs.No field rivets were used. In place of them there are boltsmade of |g-in. cold-rolled steel shafting with a nut and washer at each…
Bridges
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