Skinner, Frank W. (Frank Woodward), 1858-1932 · New York, McGraw · leaf 375
PLATE GIRDERCONSTRUCTION Old Baltimore & Susquehanna Railroad Span. — A verycurious plate girder span of 54 ft. was built for the Baltimoreand Susquehanna Railroad in 1846, and is believed to havebeen the first plate girder in this country, and one of the firstin the world. Each girder was… … Section of Double-Web Old Girder. edges of the web plates. They were in 12-ft. lengths, butjointed in the top and welded in the bottom chords. The twowebs of each girder were spaced 12 in. apart, and fastened to-gether by yg-^n. bolts pitched 12 in. vertically and horizon-tally, and passing through…
Bridges
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