Report of the Cambridge bridge commission and report of the chief engineer upon the construction of Cambridge bridge (1909)
Massachusetts. Cambridge Bridge Commission, Jackson, Anna M. (Anna Margaret), 1848-1920 · Boston : Printing Dept. · leaf 80
ing on tracks runninglengthwise of the foundation. The trusses were connectedand braced at the ends with heavy timbers, and there was nointerior bracing to interfere with the movement of the hoppercar and tube. The tube through which the concrete wasdeposited was hung from the under side of a… … Driving of foundation Pilks. Pile in position ready to drive. Plate 4.
Bridges
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