Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 323
5 ft. The total height of the centraltower is 230 ft. from its rock foundation. The parapet walls of the abut-ments are terminated with pedestals, the summits of which are decoratedby huge lions, looking landwards. As each line of rails has a separatetube, there are four tubes 460 ft. long for the… … Fig. 144.—Section of a Tube of the Britannia Bridge. by the towers and abutments. The four longer tubes were built up on theshore, and were floated on pontoons to their positions between the towers,and raised to the required elevation by powerful hydraulic machinery. Theexternal height of each tube…
Inventions
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
