Concrete Bridge Design and Construction. No. 5: Concrete bridge formwork and falsework

Pyrite oxidation beneath slabs can crack concrete and lift structures as expanding fill grips substructure walls. In Dublin, remediation revealed wide horizontal cracks that typically close once the expanding fill is removed.

This final article in the composite part of this construction compendium looks at three aspects of construction; the provision of lateral restraint to the beams, whether the steelwork is propped and how the concrete is levelled.

This note describes how steel fibre reinforced concrete groundbearing slabs are designed.