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For other uses, see Trestle (disambiguation).
Trestle
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| Trestles are useful as approaches to bridges over marshes and shallows |
Ancestor:
| Beam bridge, clapper bridge |
Related:
| None |
Descendant:
| Viaduct |
Carries:
| Heavy rail |
Span range:
| Short |
Material:
| Timber, iron, steel, reinforced concrete, prestressed concrete |
Movable:
| No |
Design effort:
| low |
Falsework required:
| No |
A trestle is a rigid frame used as a support, or especially it is used also to refer to a path supported by a number of such braced frames, a number of short spans supported by splayed vertical elements usually for railroad use. Timber trestles were extensively used in the nineteenth century in mountainous areas and to traverse floodplains adjacent to rivers as approaches to bridges. These were typically constructed using peeled logs preserved with creosote as vertical elements and with bolted and spiked sawn timbers for bracing. |
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