The Tower Bridge: A Lecture |
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1817 LIBRARIES UNIVERSITY 40 feet abutment accumulator actuated anchorage arches architectural BASCULE BRIDGE bascule chamber BLACKFRIARS BRIDGE bottom brickwork carried central opening centre CHIGAN construction Corporation Corporation of London counterbalance cross girders cylinder extend feet above Trinity feet wide fixed span FOOTWAY foundations gradients high level horizontal girders hydraulic engines hydraulic machinery inches landward ends leaf level bridge lifts London clay longitudinal Lowering Rod main pivot masonry Metropolitan Board MICHI MICHIGAN 1817 LIBRARIES MICHIGAN MICHIGAN mode moving girders old London Bridge opening bridge opening span passage permanent caisson pinions Plate pressure pump Putney Bridge quadrants river traffic road traffic roadway level rollers SECTION OF PIER Sir Horace Jones southern approach Southwark Bridge stairs stone structure subway suspension chains temporary caisson Thames Thames Tunnel timber tons Tooley Street Tower Bridge Tower Subway Trinity high water UNIVE UNIVERSITY vehicular traffic VERSITY vessels view Fig weight Westminster Bridge