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Span by Span Precast Segmental
This method is suitable when the bridge span is moderately large and when there are sufficient spans for the deployment of a universal launching truss.
Precast segments must be able to be delivered right beneath the launching truss throughout the entire length of the bridge for a direct lift.
Erection speed can be very fast (as compared to balanced cantilever method) if delivery of segments is unimpeded coupled with the use of more than one set of lifting winch.
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