Callidus Surveyors London. Building Surveying, Measured Surveys & Land Surveying
T: (020) 8543 8884
F: (020) 8543 6664
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London’s Fulcrum – lowered expectations, higher accuracy…

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…

London’s Fulcrum – lowered expectations, higher accuracy…

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

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Callidus Surveys – the surveyor for London’s Architectural icons.

30 Cannon Street stands prominently in the wedge of Cannon Street and Queen Victoria Street near St Paul’s Cathedral. Designed in 1977 for Credit Lyonnais by Whinney Son & Austen Hall it has been an iconic presence, gaining Grade II listing in 2015. In 2013 Dlvendahl Martin Architects undertook a feasibility study to assess the

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Caveat emptor – Callidus could save you from cow-pastures full of it…

A recent case brought before the Property Ombudsman highlights the necessity – and relative cost effectiveness – of obtaining a professional topographic survey on any land you might be thinking of buying. Mr Watson, a farmer in Cumberworth, Yorkshire, already owned 5.5 acres of land. He was hoping to take advantage of a Government ‘Rural

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Callidus Measured Building Surveys Ltd expansion

Callidus is pleased to anounce two additions to the team this summer. Well, I say additions; we’re proud to bring back James Mitchell to the fold after he left us in March to pursue a more engineering based role – a rewind that we consider to be a recognition of the value of the warm

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2013.04.10 – Callidus Surveyor embarks on TSA training course

Our latest surveyor to enroll onto TSA training course started last month and got off to a flying start. Levi Brown, keen to get going on the 18 month course was all smiles as he returned to the office after his first of 6 of the 2-week blocks. “Expecting at least a merit, but hoping

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2011.03.04 – South Bank University

Callidus have embarked on a programme of extensive measurement of South Bank University. Phase one is underway…

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