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One major advantage of composite bridges compared to concrete bridges is that the steel girders can carry the weight of the formwork and the wet concrete. Another advantage is the savings in construction time, which saves some money for the contractor but even more so for the road users, a fact that usually is neglected when evaluating alternative bridge designs. A further step to improve the competitiveness of composite bridges is to prefabricate not only the steel girders, but also the concrete deck. Collin will present a unique concept with dry joints between the elements, used on designing 3 bridges.

The purpose of this short course is to provide a comprehensive background to certain contemporary practices in design and construction of tunnels and underground structures.