Thameslink Windposts and Concrete Lintels


The blockwork and brickwork walls at London Bridge needed to be heavily reinforced to resist the air-pressure and lateral forces expected within the station.

The traditional method of using wind-posts would have caused significant impacts on the cost and programme so an innovative alternative was found, known as the ‘Wi System’. By utilising the Wi System, Pyramid Builders Ltd eliminated the need for circa 800 steel wind-posts and 400 concrete pre-cast lintels. As well as cost and programme saving this also had fundamental health and safety advantages.

This case study reviews the key challenges, programme of works, methodology and logistics associated with the installation.

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