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Geotechnical Observations installed, monitored and helped to interpret instrumentation on this project


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Geotechnical Observations (GeO) has been delivering structural and geotechnical monitoring solutions for more than 10 years. The company has worked on many high profile construction projects such as Heathrow Terminals 2 & 5 and the new Wembley Stadium. GeO can offer geotechnical knowledge and instrumentation know-how, which combine to enhance our client’s understanding of the projects being monitored.


Geotechnical Observations is the Exclusive Distributor of ShapeAccelArray (SAA) in the UK and Ireland:


SAA are manufactured by Measurand Inc. of Fredericton, Canada. More information can be found at

Geotechnical Observations also sell SAA on behalf of Measurand in Qatar and United Arab Emirates.

ShapeAccelArray (SAA) is a displacement and vibration monitoring system and it arguably the most exciting recent development in instrumentation and monitoring. An SAA is a string of rigid segments separated by joints that can move in any direction but cannot twist. MEMS gravity sensors measure tilt in two directions. Processors transform the position (e.g. X,Y & Z) of each sensor to produce shape and change of shape. Each SAA comes wrapped around a drum and is then placed into a small (27mm ID) uPVC tube. There is no joining of individual sensors to be done in the field, which makes the installation of Shape Arrays exceptionally quick. Displacements can be recorded onto a datalogger, directly onto a computer using a USB interface or onto an Android mobile phone using an SAA Field Power Unit. Vibration data can calso be gathered using a computer.


More information can be found on our equipment page and at

Geotechnical Observations is part of the GeoMax Partnership:


GeoMax is a partnership between Geotechnical Observations and the Asian based data management and construction consultancy Maxwell Geosystems.


This is a knowledge based partnership whereby GeO will undertake the supply, installation, set up and reading of geotechnical and structural instrumentation, Maxwell will manage the data using their industry leading web-based presentation software and both companies will provide engineering support from their experienced geotechnical teams. This partnership complements GeO's existing relationships with Measurand Inc of Canada for ShapeAccelArrays and Sisgeo of Italy for other geotechnical and structural instrumentation.


The JV is led by Dr Andrew Ridley and Dr Angus Maxwell who together bring almost 50 years of experience in construction monitoring and will initially operate out of Geotechnical Observations’ office in Weybridge. For more information email or call +44(0)1932 352040.


Maxwell Geosystems is based in Singapore and Hong Kong. Their software has been used throughout the Far East and Australasia for presenting geotechnical monitoring data on tunnelling and other large projects.








Mission OS
Contour Maps
Add your monitoring data to BIM


GeO supply Sisgeo instrumentation:

Sisgeo is the Italian manufacturer of geotechnical and structural instrumentation based near Milan. Their innovative approach to equipment development is illustrated by their Omnialog datalogger, their railway deformation system and their digital liquid levelling system, all of which we can now bring to the UK. In addition Sisgeo manufactures a wide range of standard instrumentation such as inclinometers, extensometers, piezometers, strain gauges and load cells, all of which can now be purchased through Geotechnical Observations.





Omnialog Datalogger
Railway Deformation System
Digital Liquid Levelling System



Accreditations include:

Our office is located in the historic Brooklands complex near Weybridge in Surrey. Our address and contact details are as follows:

Geotechnical Observations Ltd

The Peter Vaughan Building

9 Avro Way Brooklands

Weybridge Surrey KT13 0YF

Tel:  +44 (0)1932 352040

Fax: +44 (0)1932 356375

Follow this link to download instructions on how to get to our office.

Geotechnical Observations Limited
The Peter Vaughan Building
9 Avro Way, Brooklands, Weybridge
Surrey, KT13 0YF, United Kingdom

Tel: +44 (0)1932 352040
Fax: +44 (0)1932 356375

©2000-15 Geotechnical Observations Ltd. All rights reserved.
Registered office: The Peter Vaughan Building, 9 Avro Way, Brooklands, Weybridge, Surrey, KT13 0YF
Registered in England and Wales Number 3965757