Search results
Results From The WOW.Com Content Network
In some cases, the plate girders may be formed in a Z-shape rather than I-shape. The first tubular wrought iron plate girder bridge was built in 1846-47 by James Millholland for the Baltimore and Ohio Railroad. [2] Plate girder bridges are suitable for short to medium spans and may support railroads, highways, or other traffic. Plate girders ...
A box girder or tubular girder (or box beam) is a girder that forms an enclosed tube with multiple walls, as opposed to an Ɪ-or H-beam. Originally constructed of wrought iron joined by riveting , they are now made of rolled or welded steel, aluminium extrusions or prestressed concrete .
Victoria Bridge is a continuous iron through-bridge (the deck is between the girders rather than on top of them). The three main girders, each spanning a clear 56.7 metres (186 ft), were designed and constructed as one 181-metre (594 ft) long continuous structure (no separations over the piers), a novel structural feature for 1867 (Maw and Dredge).
A balloon flange girder is a form of vertical I-beam wrought iron plate girder, where the top flange, instead of being a simple flat plate, is extended into a hollow tube. When a girder is subjected to a positive bending moment the top flange acts in compression making a flat plate flange more susceptible to local buckling than the balloon ...
The bridge is technically unusual and interesting as a wrought-iron, triple-girder, plate-web underbridge. It is the oldest plate-web girder in the New South Wales railway system. [1] The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.
A rolled steel girder is a girder that has been fabricated by rolling a blank cylinder of steel through a series of dies to create the desired shape. These create standardized I-beam and wide flange beam [7] shapes up to 100 feet in length. A plate girder is a girder that has been fabricated by welding plates together to create the desired ...
The original superstructure consisted of the two wrought-iron arched girders with lattice webbing and a timber floor system. The arch girders are made up of a pair of Z-shaped bars riveted to a central plate diaphragm. Diagonal lattice members fill the web between the upper and lower portions of the plate.
The fixed spans were 116 ft (35 m) long, made of three wrought iron hogback plate girders each, resting on three piers. [5] The swing span was constructed of three hogback wrought iron box girders, each 250 ft (76 m) long, each box girder having a thickness of 2 ft 6 in (0.76 m) made of plates 0.3125 to 0.4375 in (7.94 to 11.11 mm) thick.