Author: Concrete Bridge Development Group (CBDG)
3 February 2014
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Concrete Bridge Development Group (CBDG)
In situ options tend to be used on projects where the speed of construction is not critical, or where the lower costs of the in situ works justify a slightly longer programme.
This article examines the various methods for the design and construction of concrete arches, frames, tunnels and jacked boxes, which cover the whole range of bridges from the smallest culverts to the largest concrete spans in the world.
This article examines the prestressing for a concrete bridge. Prestressing enhances the capacity of a member that is weak in tension, but strong in compression. It effectively creates a new material that is strong in tension. A prestressed bridge has much less steel to be handled, which reduces congestion, leading to easier and quicker concrete placing.