From DT Online

Lunch for workers atop a steel beam 800 feet above ground, during construction of the RCA Building in Rockefeller Center, New York

The word beam describes a basic bridge design and is also an old word for tree - such as found in Hornbeam or Whitebeam for example. The first bridges might have been just logs of wood laid across a stream.

Any bridge which is based on pieces of material just lying across a gap is called a Beam Bridge. They can be slabs of stone, concrete or steel girders. They can be made from a single piece of material or built up from different pieces - sometimes to build open frameworks in the form of a beam.They can be solid or hollow.

Many footbridges, railway bridges and motorway bridges are Beam Bridges.

Pages in category ‘Beams’

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Media in category ‘Beams’

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