27th May

Andrew Ridley


Andrew Ridley is the Managing Director of Geotechnical Observations Ltd (GeO), which he founded in 2000.  GeO specialise in the installation, reading, reporting and interpretation of geotechnical instrumentation. Andrew obtained his first degree in Civil Engineering from the University of Nottingham in 1984, followed it with a Masters Degree in Soil Mechanics from Imperial College London in 1988 and was awarded a PhD from Imperial College in 1993 for his work on “the measurement of soil moisture suction.”  He has served on the Advisory Panel for Geotechnical Engineering (the proceedings of the ICE), was on the Steering Committee for CIRIA 550 Infrastructure Embankments – Condition Appraisal and Remedial Treatment and represents FMGM (Field Measurements in Geomechanics) on the BGA committee.  He is also the UK representative on ISO/TC182/WG2, which is drafting International Standards for geotechnical instrumentation and monitoring. In 2016 he was awarded the John Mitchell Gold Medal by the Institution of Civil Engineers in recognition of his contributions to geotechnical engineering.

Tony Simmonds

Tony Simmonds is a Director at Geokon, Inc, Lebanon, NH, USA, a manufacturer of geotechnical instrumentation, where he has worked for over 35 years. He graduated from Portsmouth University, in the UK, in 1979 with an honors degree in Engineering Geology and Geotechnics. He is responsible for Geokon’s network of overseas agents, representatives and system integrators and travels extensively to support them both on site and in commercially related matters.
Among the many projects in which he has been involved, some of the most notable include the Three Gorges Dam (China), the Petronas Twin Towers (KL, Malaysia), Itaipu Dam (Paraguay/Brazil), the Central Artery Project (Boston USA) and the Potzdamer Platz (Berlin, Germany).
Tony Simmonds is an active member of the TRB (Transportation Research Board), DFI (Deep Foundations Institute), ISSMGE (International Society for Soil Mechanics and Geotechnical Engineering), and ASCE (American Society of Civil Engineers); and has spoken at numerous courses and presented papers at various symposia worldwide. 


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