Geotechnical monitoring of an earth retaining structure - ground movement

Detecting ground movement and structural deformation

Read the case study to find out how fiber optic strain and temperature sensing was deployed in a large earth retaining structure which formed part of a landfill construction.

Conventional geodetic techniques, a total station and bi-reflex targets measured the structure’s surface displacement. Fiber optic distributed sensing provided insight into the structure’s internal strain evolution. Thanks to an extended measurement campaign, when a strain event happened five years after the work began, the alarm was raised, indicating the area of strain.

The monitoring project integration was carried out by Engineering Geodesy and Measurement Systems, Graz University of Technology.
Looking to monitor a similar structure? Contact us


Proceedings 8th Civil Structural Health Monitoring Workshop (CSHM-8) March 29-30 2021

“Ageing structures and infrastructures in hazardous environment” was the theme for the International Society for Structural Health Monitoring of Intelligent Infrastructure workshop in 2021.

In the Geotechnics section, fibrisTerre presented:
“Distributed fiber-optic strain sensing: Field applications in pile foundations and concrete beams.”

Conference proceedings available for purchase here


fibrisTerre keynote at Workshop on Distributed Fibre Optic Sensing and geomechanics

Where would you expect to see strain during a borehole casing installation?

Deploying continuous sensing into a 550 m borehole gave an insight into strain and temperature development during the first year, and was the subject of fibrisTerre’s keynote at

European Association of Geoscientists and Engineers EAGE Keynote for the Workshop on Distributed Fibre Optic Sensing and geomechanics.

Watch the Case Study presentation

Monitoring the effect of construction on nearby infrastructure

Singapore’s used water infrastructure to be monitored with Distributed Fiber Optic Sensing technology by fibrisTerre

Monitoring of the structural integrity of the Deep Tunnel Sewerage System (DTSS). Singapore’s used water underground infrastructure to be monitored with Distributed Fiber Optic Sensing (DFOS) technology by fibrisTerre.

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'ICE Specification for Piling and Embedded Retaining Walls'.

Fiber optic strain sensing appears in the ‘Specification, requirements and guidance notes’ of ‘ICE Specification for Piling and Embedded Retaining Walls,’ published by the Institute of Civil Engineers. Guidance for both embedded and surface-attached fiber optic strain sensors is included.

fibrisTerre is here to make it easy for you. Bring us your questions regarding distributed fiber optic sensing for detecting strain during piling, so that we can help you plan the project.

ICE Specification for Piling and Embedded Retaining Walls
Institution of Civil Engineers
Default Book Series. January 2016


Product release: fTB 5020

fibrisTerre presents its latest-generation system for distributed fiber-optic strain and temperature monitoring

  • Experience fibrisTerre’s field-proven BOFDA technology
  • New single-ended measurement functionality, powered by fibrisTerre’s unique, patent-pending BOFDR technology
  • The smallest, lightest and most power-efficient fTB series ever: 2 RU high, 7 kg, fanless case design
  • fibrisTerre’s measurement software fTView – now with Linux support

Please contact our sales team for details of the technology and project applications