GEO-Instruments UK have been contracted by Bouygues to provide Instrumentation and Monitoring for the construction of Oriel, a new world-leading eye health centre in Central London.

GEO-Instruments Structural Monitoring Tilt Beams
GEO-Instruments engineers installing Tilt Beams on a water tower via a MEWP

Located at St Pancras Hospital, Oriel is a partnership between Moorfields Eye Hospital NHS Foundation Trust, the UCL Institute of Ophthalmology (IoO) and Moorfields Eye Charity, which is dedicated to advancing eye care, research and education. 

Bouygues, the principal contractor on the £300 million project, began demolition of buildings currently on site in early 2023. The completed 10-storey, 47,000 sq. metre centre is planned to open in 2027. 

The monitoring scheme implemented for this project requires the structural monitoring of hospital buildings and roads next to the construction site. Other focuses for monitoring include a water tower, chimney and utility tunnel. 

GEO-Instruments are providing 24-hour automated monitoring using Wireless Tiltmeters installed on key structures around the site as well as regular 3D surveys and levelling runs. 

The tiltmeters are mounted on metre-long fibreglass beams fixed at each end to the monitored assets. Aligned vertically, they provide a highly accurate method of monitoring changes in inclination of the structure.

More than 50 3D survey targets have been established on the same buildings to give a more complete picture of structural movement related to site works. 
Survey teams will undertake weekly 3D surveys and levelling loops during all the key phases of demolition and construction over the course of the project. 

Instrumentation and survey targets installations started in March with survey control establishment taking place over preceding weeks.

One of the more complex aspects of instrument installation was the fixing of Wireless Tiltmeters to the water tower and nearby chimney. The sensors needed to be installed relatively high up compared to the other buildings, requiring access using a Mobile Elevating Work Platform (MEWP).

24-hour monitoring and regular surveys will continue until the completion of construction works.

GEO-Instruments are pleased to be working with Bouygues again, having previously worked together on multiple projects, including University College London Hospitals’ Proton Beam Therapy Centre.

Find out more about the UCLH project.

GEO-Instruments Structural Monitoring Tilt Beam
Wireless Tiltmeters on beams were installed on Hospital buildings surrounding the site
GEO-Instruments Structural Monitoring Tilt Beam Water Tower
Another Tilt Beam installed on a support for a water tower near the site
Published on