Callidus Surveyors London. Building Surveying, Measured Surveys & Land Surveying
T: (020) 8543 8884
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London’s Fulcrum – lowered expectations, higher accuracy…

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Callidus Surveys have embarked on a six-month-long project to monitor the movement of one of London’s iconic sculptures – The Fulcrum, outside Liverpool Street Station.
The Fulcrum was designed by American artist Richard Serra and installed in 1987. Standing around 17m tall (from the current ground level), it is constructed of 5 solid plates of 80mm thick cor-ten steel, chosen for its attractive weathering properties.
As part of a huge redevelopment of the area, the ground level of this currently bustling public thoroughfare is to be lowered by around 1500mm and the 200-tonne Fulcrum is to go with it.
Callidus Surveys’ first task is to undertake pre-development baseline readings over the course of a week – several times a day – to establish the normal deformations of the sculpture in-situ. Recent high temperatures are likely to have a marked effect on the solid steel plates.
Once propped and secured from beneath, the sculpture – en-masse – is to be jacked-down in 10mm increments over the course of two days. Callidus is to provide real-time analysis during this process to monitor for any unwanted lateral movement.
It’s an interesting undertaking to be involved in such an impressive feat of engineering – we’re proud to be a part of it.
Our surveyors will be the first to know of any lateral deviations so if you see them running…