DISCUSSION. THE ERECTION OF IRON BRIDGES.

Keywords: ERECTION, IRON, BRIDGES, STAGING, GIRDERS, ROLLING, DISTORTION, PINS, RIVETING, TEMPERATURE, RAILWAYS, DERRICKS, CRANES, WIRE, ROPES, SCAFFOLDING, FLOODS, WAR, MILITARY, EYE BARS, BARS, CANTILEVER, VIADUCTS, LABOUR, RAILS, SUKKUR BRIDGE, FINDHORN VIADUC, SCOTLAND, RIVER MERSEY, ENGLAND, PAKISTAN, UK