Beam bridge
Encyclopedia : B : BE : BEA : Beam bridge
| Beam Bridge | |
|---|---|
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| This footbridge was made from beams and boards obtained from logs from the surrounding forest | |
| Ancestor | Log bridge |
| Related | None |
| Descendant | Plate girder bridge, trestle, truss bridge, moon bridge |
| Carries | Pedestrians, automobiles, trucks, light rail, heavy rail |
| Span range | Short |
| Material | Timber, iron, steel, reinforced concrete, post-stressed concrete |
| Movable | No |
| Design effort | low |
| Falsework required | No, unless cast-in place reinforced concrete is used |
A beam bridge is a direct descendant of the log bridge now made from shallow steel "I" beams, box beams (hollow rectangular tubes), reinforced concrete, or post-tensioned concrete (concrete with tubes for cable tendons). It is frequently seen in pedestrian bridges and for highway overpasses and flyovers. As is its ancestor, this bridge is in structural terms the most simple of the many bridge types.
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