CASE STUDY

22 Bishopsgate: Monitoring of Europe’s Second Tallest Building CLIENT: LEICA GEOSYSTEMS / CAREYS

THE CHALLENGE OUR SOLUTION THE OUTCOME

22 Bishopsgate is one of London’s new With a reputation of being world leaders The completely wireless tilt node sensors and exciting additions to the ever- in wireless remote condition monitoring, with their vast array of mountings and growing skyline. The 62 storey, 278m, the Leica Geosystems Monitoring fixtures allowed for extremely quick building is set to be the second tallest division brought Senceive onboard to installation with the ability to redeploy in building in the UK and indeed Europe, offer a solution that worked practically any orientation whenever required. This rivalled only by the Shard. Once and easily with Leica Geosystems’ own was ideal, as the core walls will be built completed it will be the centre piece of a systems. Senceive’s award winning up to 62 floors gradually and the GNSS cluster of tall buildings in London’s FlatMesh system worked in tandem with equipment would sit on top of this and financial district. It is being constructed two sets of GNSS equipment, each have to be moved from time to time. on previous foundations and a basement mounted on rigs on top of each core originally built for the Pinnacle project, wall. Four wireless tilt node sensors were Due to the length of monitoring required, which was abandoned in 2012 and was installed on top of one rig and four on Senceive’s tilt nodes, set to a 30 minute set to be the tallest building in Europe. the other. The intelligent tilt nodes sent reporting rate, were ideal. A battery life measurements to two 3G gateways, of up to 15 years, no maintenance Leica Geosystems were nominated to which relayed data back to the UK’s only required and remotely configurable carry out verticality checks and setting approved Leica Geosystems developed firmware made the FlatMesh platform a out activities for two core walls and interface to GeoMos. truly perfect solution. opted to use their GNSS systems. The data was then fed back to their GeoMos The FlatMesh system proved its ease of visualisation software. installation and redeployment and its reliability. It was a key enabler of A highly accurate tilt monitoring system successful planning/surveying by Leica was required to calibrate and monitor Geosystems and Careys, and will the stability of the support used for the continue to monitor the project until GNSS systems for corroboration of the completion in 2019. equipment and data.

Rigs on the top of the two core walls