MEASURE. VERIFY. INTERPRET.

Geotechnical Monitoring: Data, Context & Interpretation

RAUZ connects geotechnical instruments, survey and InSAR with data QA/QC, cross-source analytics and engineer-reviewed interpretation to turn ground and structural behaviour into trusted monitoring intelligence.

Monitoring Domain · Geotechnical

Geotechnical monitoring is useful when measurements can be tied back to ground behaviour.

Geotechnical monitoring observes how ground, groundwater and structures interacting with the ground behave before, during and after construction or through the operating life of an asset. RAUZ works above the measurement layer: we connect project-selected instruments, survey records, remote sensing and project context, check whether the evidence is dependable, and interpret what the combined record can support.

Measure

Observe the parameter that matters

Movement, pore pressure, settlement, load, strain, tilt, vibration, seepage or another parameter should be linked to a defined engineering question rather than collected without a decision purpose.

Verify

Check whether the evidence can be trusted

Baselines, units, timestamps, reference systems, missing data, abrupt jumps, instrument changes and neighbouring observations all affect whether a trend is credible.

Interpret

Read change in physical context

The same movement magnitude can mean different things in different ground, groundwater and construction conditions. Interpretation therefore remains project-specific and engineer-reviewed.

RAUZ positioning: this page is about interpreting mixed geotechnical monitoring evidence. It does not require a project to replace its existing sensors, survey team, monitoring contractor or data platform.

Project Context

The site changes the meaning of the measurement.

A geotechnical monitoring plan should be read against the site-specific ground model, groundwater regime, climate and construction sequence. RAUZ does not infer a project geology from a country, city or asset type alone; project conclusions should be anchored to the client’s ground investigation and design records, together with authoritative public information where appropriate.

Geology, stratigraphy and ground model
Review documented soil and rock units, fill, weathering, discontinuities, weak or compressible layers, rockhead and other features that may control deformation. The European Commission JRC describes the Ground Model as a site-specific representation built from ground investigation and other available information across the zone of influence.
Groundwater and pore-pressure conditions
Groundwater level, pore pressure, dewatering, recharge, drainage and hydraulic boundaries may affect deformation and stability. Piezometer results should therefore be interpreted together with installation details, response characteristics and the project’s hydrogeological context.
Climate and environmental forcing
Rainfall, seasonal recharge, temperature cycles, drought, freeze-thaw conditions and other environmental effects can influence ground behaviour, surface conditions, instrumentation performance or the timing of observations. The relevant factors should come from official local meteorological, hydrological or project records rather than generic assumptions.
Construction or operating sequence
Excavation depth, support installation, tunnelling advance, loading, backfilling, dewatering, grouting, blasting, traffic or other documented events can provide the temporal context needed to test whether observed change is physically plausible.
Adjacent assets and measurement geometry
Buildings, utilities, rail, roads, slopes and other sensitive assets may require different parameters, frequencies and response routes. Instrument depth and orientation, survey line-of-sight, control points, datum and InSAR viewing geometry also affect what a measurement represents.

For a named project: RAUZ can extend this domain framework into a site-specific technical discussion using official geological, meteorological, environmental, authority and project information supplied or publicly available for that location.

Evidence Architecture

A single instrument rarely tells the whole engineering story.

RAUZ treats geotechnical monitoring as an evidence chain. Field instruments show local response, survey and remote sensing add independent geometry or spatial context, and project records explain when and where the physical system changed.

Field

Ground & structural instruments

Inclinometers, piezometers, settlement systems, tiltmeters, crack or joint gauges, load cells, strain gauges, pressure cells and other project-selected instruments provide direct or derived observations at defined locations.

Independent

Survey & remote sensing

Levelling, total-station observations, GNSS and, where suitable, InSAR can provide independent or wider-area movement evidence with different reference systems, spatial coverage and measurement geometry.

Context

Project & environmental records

Ground investigation, design assumptions, construction sequence, groundwater records, weather, inspections, trigger criteria and maintenance records help determine whether the measured change is consistent with the mechanism being monitored.

  • Instrument identity, depth, orientation and location
  • Baseline, datum, units and sign convention
  • Timestamp, frequency and data continuity
  • Calibration, maintenance and replacement events
  • Neighbouring and independent measurements
  • Construction, groundwater and environmental events
  • Trigger criteria and documented response logic
  • Raw, corrected and derived data traceability

Measurement Options

Choose instruments around the engineering question—not around a catalogue.

The appropriate method depends on the expected mechanism, required range and resolution, installation constraints, update frequency, access, redundancy, reference stability and the consequence of missing data. The examples below are discussion points, not a project specification.

Engineering parameter Possible measurement methods Typical interpretation question Important context
Lateral ground movement Borehole inclinometer, in-place inclinometer or other suitable displacement system Where is movement occurring and is the displacement profile changing? Casing installation, reference depth, orientation, baseline and shear-zone geometry
Pore-water pressure / piezometric level Piezometers and project-appropriate groundwater monitoring Is pressure changing with dewatering, recharge, consolidation or another documented event? Sensor elevation, installation zone, response time, groundwater regime and barometric effects where relevant
Settlement / heave Levelling, settlement points, hydraulic settlement systems or other project-suitable methods Is vertical movement persistent, accelerating, localised or consistent with expected consolidation? Benchmark stability, construction loading, ground profile and measurement precision
Surface / 3D displacement Total station, GNSS, levelling, laser-based survey or suitable geodetic methods How is the monitored point moving in the project reference frame? Control network, line-of-sight, datum, atmospheric effects and survey adjustment
Load / force / stress change Load cells, total pressure cells, strain-based systems Are anchors, struts, foundations, retaining systems or ground pressures behaving as expected? Calibration, temperature, load path, installation details and structural stiffness
Tilt / rotation / local opening Tiltmeters, crack meters, joint meters or survey methods Is local structural response changing with ground movement or construction activity? Mounting, temperature, local damage, reference direction and structural mechanism
Wide-area surface deformation InSAR where ground cover, geometry, coherence and temporal coverage are suitable Is there a spatial or historical movement pattern that should be compared with local monitoring? Line-of-sight geometry, reference frame, coherence, temporal sampling and independent validation

Instrument selection boundary: RAUZ can discuss monitoring philosophy, measurement options and data interpretation. Final selection, detailed design, installation and statutory responsibilities remain project- and jurisdiction-specific.

Monitoring Analytics

Turn time series into a traceable engineering finding.

RAUZ combines automated processing with engineer review. The objective is not to make software declare a ground condition safe or unsafe; it is to make data quality, change, uncertainty and supporting evidence easier to investigate consistently.

01 · DefineQuestion, asset, mechanism, review period and decision boundary.
02 · ValidateMetadata, continuity, baseline, units, timestamps and source health.
03 · AnalyseMagnitude, trend, rate, acceleration, change points and anomalies.
04 · CorrelateNeighbouring instruments, survey, InSAR, groundwater and project events.
05 · InterpretPhysical plausibility, alternatives, uncertainty and engineering significance.
06 · CommunicateFindings, limitations, priorities, alerts and engineer-reviewed reporting.
QA/QC

Before interpretation

Screen missing records, duplicated values, discontinuities, baseline changes, unit problems, flat-lines, spikes, re-zeroing and source outages before an apparent movement is treated as physical behaviour.

Cross-source

Evidence, not one chart

Compare independent measurements and relevant project events where available. Agreement can strengthen confidence; disagreement may identify scale, geometry, timing or data-quality questions that need investigation.

Human review

Keep judgement accountable

Automation and AI-assisted review can prioritise anomalies and reduce repetitive processing, while engineering conclusions, limitations and recommended actions remain subject to professional review.

Applications

Different assets create different monitoring questions.

The measurement mix should follow the project mechanism, sensitivity of the asset and decisions that monitoring is expected to support. The examples below show where geotechnical monitoring evidence is commonly relevant; they do not prescribe a universal system.

Excavations, retaining systems and foundations
Possible questions include lateral wall movement, ground settlement, groundwater drawdown, strut or anchor response, adjacent-asset movement and whether behaviour is consistent with excavation stage and support installation.
Tunnels and underground works
Monitoring may need to relate ground and structural movement to tunnel advance, excavation sequence, lining response, dewatering, compensation measures, surface settlement and nearby sensitive assets.
Slopes, landslides and earthworks
Ground displacement, pore pressure, rainfall, groundwater and surface observations may need to be read together. USGS monitoring examples show that landslide monitoring can combine rainfall, soil-water, piezometer, inclinometer and other observations depending on the site.
Dams, levees and embankments
Instrumentation can support performance assessment through deformation, pore pressure, seepage, load or stress observations. USACE maintains dedicated guidance for instrumentation, monitoring and assessment of embankment dams and levees.
Rail, roads, bridges, buildings and critical assets
The monitoring question may focus on settlement, rotation, track or pavement geometry, foundation response, retaining systems, vibration or movement of adjacent ground and structures. Reference systems and asset tolerances must be project-specific.
Mining, quarries and large ground-disturbance projects
Monitoring may combine local instruments with survey and remote sensing to understand deformation over different spatial scales. Ground model, excavation geometry, groundwater and operating sequence are essential to interpretation.

Outputs & Collaboration

Start with the project question and use the monitoring system already in place.

RAUZ can work as an analytical layer alongside owners, consultants, contractors, surveyors, instrumentation providers, InSAR providers and local field teams. The scope can be narrow—a single anomaly—or recurring across a project or asset portfolio.

Focused

Data Diagnostic Review

Investigate an unexplained jump, trend change, apparent trigger exceedance, inconsistent instruments, baseline concern or recurring data-quality issue.

Recurring

Monitoring Interpretation

Scheduled review of agreed datasets with QA/QC observations, trends, rate-of-change, cross-checks, key anomalies, limitations and prioritised engineering commentary.

Independent

Monitoring Review

Review monitoring plans, baselines, trigger logic, contractor reports, data handling and the technical interpretation already being supplied to the project.

Spatial

InSAR + Ground Evidence

Compare satellite-derived ground-motion information with local instrumentation or survey where the geometry, temporal coverage and data quality support a useful comparison.

Design

Monitoring Strategy

Discuss objectives, instrument families, layout concepts, baseline period, frequency, redundancy, trigger framework, data routes and reporting requirements.

Automation

Engineer-Reviewed Reporting

Automate repeatable charts, checks, threshold presentation and report preparation while preserving review around interpretation, uncertainty and engineering significance.

RAUZ Role

An independent interpretation layer above the measurement system.

RAUZ is structured around the part of monitoring that remains difficult to standardise: deciding whether evidence is credible, whether different sources agree, what physical mechanism may explain the change and what should be checked next.

Vendor-neutral

Keep existing field systems

Begin with client-owned or third-party monitoring data rather than requiring a proprietary RAUZ sensor stack as the condition for engineering review.

Multi-evidence

Compare different observation types

Bring instruments, survey, InSAR, groundwater and project events into the same technical discussion while preserving the limitations of each source.

Engineer-reviewed

Automation supports judgement

Use analytics and AI-assisted review to reduce repetitive work and prioritise exceptions without presenting automated detection as a substitute for project-specific engineering judgement.

Independent

Separate observation from conclusion

State what the records show, what is inferred, what remains uncertain and which follow-up depends on missing design, ground or operational information.

Remote-first

Work across project geographies

Central technical review can work with local monitoring contractors and field teams while project-specific statutory, installation and site responsibilities remain with the appropriately appointed parties.

Traceable

Preserve the evidence chain

Keep source, baseline, calculations, exclusions, corrections, thresholds, plots, observations and interpretations sufficiently visible for later technical review.

Responsibility boundary: RAUZ’s monitoring analysis and review do not automatically replace the project designer, Engineer of Record, statutory checker, monitoring operator or any locally required licensed professional. The formal role must be defined by the governing appointment and jurisdiction.

Official Technical Context

Public standards and official guidance behind the monitoring discussion.

The sources below are used for technical context only. They are official standards or government / intergovernmental publications and do not imply a partnership, endorsement or commercial relationship with RAUZ.

ISO 18674-1:2015 — Geotechnical monitoring by field instrumentation: General rules

Sets general rules for performance monitoring of the ground, structures interacting with the ground, fills and geotechnical works, including monitoring before, during and after construction.

Open ISO source ↗
ISO 18674 series — Pore pressure, stress, strain, load and displacement monitoring

The ISO 18674 family includes instrument-specific parts covering piezometers, total pressure cells, strain gauges, load cells and geodetic displacement measurements, supporting a parameter-based monitoring approach.

ISO 18674-5 pressure cells ↗    ISO 18674-7 strain gauges ↗    ISO 18674-8 load cells ↗
European Commission JRC — Assembling the Ground Model and derived values

Second-generation Eurocode 7 guidance describes the Ground Model as a site-specific representation of ground and groundwater assembled from investigations and other available information across the zone of influence.

Open JRC guidance ↗
European Commission JRC — Observational Method / design feedback

Official Eurocode guidance explains how monitoring during construction can be compared with established thresholds and used within a managed feedback process with pre-planned contingency measures.

Open JRC source ↗
U.S. Army Corps of Engineers — Instrumentation of Embankment Dams and Levees

USACE EM 1110-2-1908 provides official guidance for instrumentation, monitoring and assessment of embankment dams and levees.

Open USACE Engineer Manuals ↗
U.S. Bureau of Reclamation — Instrumentation services and monitoring practice

Reclamation describes routine performance monitoring, data-validity review, anomaly troubleshooting, instrumentation design, automated collection and in-depth analysis across dams and other facilities.

Open USBR source ↗
U.S. Geological Survey — Landslide and InSAR monitoring

USGS examples show the use of multiple observation types in landslide monitoring and explain how InSAR can reveal spatial ground-deformation patterns that can be considered alongside ground-based monitoring.

USGS landslide monitoring ↗    USGS InSAR ground deformation ↗

Frequently Asked Questions

Questions before starting a geotechnical monitoring review.

What is geotechnical monitoring?
Geotechnical monitoring is the observation of ground, groundwater and structures interacting with the ground using field instrumentation, survey or other suitable measurement methods. Its engineering value comes from relating reliable measurements to expected behaviour, project risks and decisions.
Does RAUZ need to install the instruments?
No. RAUZ can work with data generated by the client’s existing monitoring contractor, survey team, instrumentation provider or data platform, provided the available records and project context are sufficient for the agreed review.
Can RAUZ review data from different sensor brands and systems?
Yes, where the data can be accessed in a usable form and the necessary metadata, units, baselines and project references are available. The RAUZ model is vendor-neutral and does not require replacement of functioning field systems simply to perform engineering interpretation.
How does RAUZ decide whether an unusual reading is real?
A diagnostic review can check continuity, baseline, timestamps, units, instrument history, neighbouring measurements, survey or InSAR evidence, construction events, groundwater and the expected physical mechanism. A single screening rule is not treated as proof of ground movement.
Can InSAR be combined with ground instrumentation?
Yes, when the datasets are suitable. InSAR and field instruments measure movement differently and may have different reference frames, spatial scales, temporal sampling and geometry. The comparison therefore needs to preserve those differences rather than treating one source as a direct substitute for the other.
Can RAUZ help select instruments for a new project?
RAUZ can support monitoring philosophy, instrument-family selection, layout concepts, baseline planning, frequency, redundancy, trigger frameworks and data/reporting requirements. Detailed installation design and any locally regulated responsibility must be defined for the project and jurisdiction.
What information is useful for a first technical discussion?
A project location, asset type, current stage, monitoring objective, known ground and groundwater conditions, existing instrument list, sample report or dataset, trigger criteria and the engineering question you need answered are usually enough to begin defining the review scope.

Discuss a Geotechnical Monitoring Problem

Start with the site, the evidence and the decision you need to support.

A useful first discussion does not require a finished specification. Send a recent monitoring report, representative dataset or short project brief and explain what changed, what evidence is available and what your team needs to decide.

Project location Asset / project type Ground & groundwater information Instrument list Sample data / report Trigger criteria Construction stage Engineering question

RAUZ is the market-facing environmental and engineering monitoring intelligence platform of Rauz Caucasus LLC, based in Tbilisi, Georgia and structured for international, remote-first technical delivery.

Scroll to Top