Science Fair Project Encyclopedia
Box girder bridge
A box girder bridge is a bridge commonly used for roadway flyovers and for modern elevated structures of light rail transport. They may be fabricated from post-stressed concrete or sheet steel plate. If of concrete, they may be cast in place using falsework supports, removed after completion, or may be prefabricated (as is the steel plate type) in a fabrication yard, then transported and emplaced using cranes. The later method is often used in situation where access for construction is limited to times of light traffic, which may be detoured around the work area using only a limited number of lanes.
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details