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Falsework has been employed in bridge and viaduct construction since ancient times. The Romans were renowned for its use, as at the Limyra Bridge in Turkey. Until the turn of the 20th century almost all falsework was constructed from timber. To compensate for timber shortages in different regions and to rationalize labor and material usage, new ...
[1]: 111 The falsework was dragged across on a temporary track. It was inspected and some defects were rectified before it was put into use. [1]: 113 Some questions were raised as to whether the falsework was truly plumb but works proceeded. [1]: 117 The concrete to the eastbound carriageway deck was poured on 24 October 1972.
In the first phase, the falsework only had to carry the weight of the lower course, so that it could itself be of lighter construction. In the second phase, the weight of the upper layer could be already borne by the lower vault; the falsework was thus already available for use in a different arch. [17]
The nature of the self-anchored suspension bridge necessitates the temporary construction of falsework, in the form of compression struts or an underdeck, before work begins on the permanent structure. This requirement is inherent in the structure's definition.
Construction site safety is an aspect of construction-related activities concerned with protecting construction site workers and others from death, injury, disease or other health-related risks. Construction is an often hazardous, predominantly land-based activity where site workers may be exposed to various risks, some of which remain ...
The curved nature of the approach and seismic safety criteria place additional constraints upon the design, which set many firsts for a SAS bridge. [47] While earlier bridges of this type use chain eyebars, the long span needed here uses wire cable, like other modern suspension bridges. Uniquely, this is a single loop of cable rather than the ...
Construction of a box girder viaduct on the North–South Commuter Railway, Philippines. If made of concrete, box girder bridges may be cast in place using falsework supports, removed after completion, or in sections if a segmental bridge. Box girders may also be prefabricated in a fabrication yard, then transported and emplaced using cranes.
Centring [1], centre [2], centering [3] [4], or center [5] is a type of falsework: the temporary structure upon which the stones of an arch or vault are laid during construction. Until the keystone is inserted an arch has no strength and needs the centring to keep the voussoirs in their correct relative positions.