Beam bridge: Difference between revisions
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|design = Low |
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|falsework = No, unless cast-in place reinforced concrete is used |
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'''Beam [[bridge]]s''' are some of the simplest kinds of bridges today. They are a direct descendant of the [[log bridge]],{{Citation needed|Please provide a reference for this predecessor-decendant relationship? Without a reference, it may be original research.|date=April 2010}} now more commonly made from shallow steel [[I-beam|'I' beams]], [[box girder bridge|box girders]], [[reinforced concrete]], or [[post-tensioned concrete]]. It is frequently used in pedestrian bridges and for highway overpasses and flyovers. As is its ancestor, this bridge is in structural terms the simplest of the many bridge types. |
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Like most bridges that are characterized by how they are supported, beam bridges consist of one horizontal beam with 2 supports usually on either end. |
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Decorative beam bridges, commonly built from cedar, pine, and redwood, can span a [[koi pond]] or country creek. These free standing bridges are usually built as functional walkways or just for decoration. |
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Beam bridges are usually poles supporting a beam or board.{{Citation needed|I doubt this. Please provide a reference as most highway bridges are beam bridges and most of those are concrete.|date=April 2010}} |
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[[Image:Bp bridge.JPG|250px|thumb|left|[[BP Pedestrian Bridge]] is a concealed box girder beam bridge in [[Millennium Park]] with sculptural qualities.]] |
[[Image:Bp bridge.JPG|250px|thumb|left|[[BP Pedestrian Bridge]] is a concealed box girder beam bridge in [[Millennium Park]] with sculptural qualities.]] |
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==External links== |
==External links== |
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{{Commons category|Beam bridges}} |
{{Commons category|Beam bridges}} |
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Revision as of 13:43, 7 June 2010
{{Infobox bridge type |type_name = Beams bridge |image = Small footbridge.jpg |image_title = This footbridge was made from beams and boards obtained from logs from the surrounding forest. |sibling_names = None |descendent_names = Box girder bridge, Plate girder bridge, trestle, truss bridge, moon bridge |ancestor_names = Log bridge |carries = Pedestrians, automobiles, trucks, light rail, heavy rail |span_range = Short |material = Timber, iron, steel, reinforced concrete, prestressed concrete |movable = No |design = Low |falsework = No, unless cast-in place reinforced concrete is used This page has an error.
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External links
| Structural types |
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| Lists of bridges by type | ||
| Lists of bridges by size | ||
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