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Failure of prestressed hollowcore units during storage and transport

A reporter shares their experience of the failure of prestressed hollowcore units during storage and transport.

Failure of cast-in wire lifting loops on manhole cover slabs

A cast-in wire lifting loop failed when lifting a 4m diameter precast manhole cover slab into place.

Lessons learned from the 2018 Florida bridge collapse during construction

This was a bridge of an unusual design and was being constructed in an unusual manner. The main 53m pre-stressed pre-cast concrete span truss was in position when cracks appeared at a node and over a period of almost three weeks they visibly worsened until collapse occurred.

Disproportionate collapse assessment of large panel system buildings

A reporter has become concerned by the approach being taken by some engineers to assess the risk of disproportionate collapse due to fire in large panel system (LPS) buildings.

Design responsibility for temporary stability of steel frame building

A reporter raises concerns about the division of responsibility for the temporary stability of a four-storey steel frame structure with precast concrete planks and a structural topping.

Inadequate billets used in precast concrete connections

Whilst completing a third-party design appraisal, a correspondent found that solid steel billets intended to form the primary shear transfer mechanism between concrete beams and columns were insufficient for this purpose.

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Failure of prestressed hollowcore units during storage and transport

Failure of cast-in wire lifting loops on manhole cover slabs

Lessons learned from the 2018 Florida bridge collapse during construction

Disproportionate collapse assessment of large panel system buildings

Design responsibility for temporary stability of steel frame building

Inadequate billets used in precast concrete connections

Share your knowledge

Casting, transporting and installing precast concrete kerbs

Failure of cast-in lifting eye on L-shaped wall

Failure of cast-in lifting anchor on precast twin-wall

Steel balconies fixed to precast hollowcore floor planks

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