Geomechanics.io

Coates has expanded its engineered dewatering capability with a new fleet of electric BBA Pumps, including PT200 D265 (8″/200mm), PT150 D185 (6″/150mm) and PT100 D130 (4″/100mm) units for urban construction sites. The electric configuration targets groundwater control on projects from small residential excavations to complex basements, water assets and civil infrastructure in dense urban areas where diesel emissions, noise and access constraints are critical. For geotechnical and civil contractors, the range allows closer-to-face installation and longer runtimes on grid power, simplifying dewatering design and temporary works planning.

The Observational Method in ground engineering is regaining interest as major infrastructure schemes look to manage geotechnical uncertainty in real time rather than rely solely on conservative design factors. Engineers are revisiting staged construction with predefined trigger levels, instrumented slopes and retaining walls, and adaptive support measures, but uptake remains patchy due to contractual risk allocation, programme pressures, and limited monitoring budgets. Wider use could cut unnecessary pile lengths, excavation support thicknesses and contingency allowances, provided clients accept flexible design envelopes and robust monitoring–response plans.

Newport City Council has issued a £2.7M procurement for a solar farm and battery energy storage system at the capped Docks Way Landfill Site in Newport, South Wales, aiming to convert the former waste facility into a grid-connected renewable energy asset. The design-and-build contract will need to address foundation detailing on landfill cover, settlement behaviour and gas management, as well as integrating the BESS with local distribution network constraints. Civil and geotechnical bidders will be expected to manage construction over waste, including differential settlement and leachate control.

Balfour Beatty Ground Engineering, VSL Systems (UK) and Bachy Soletanche have formed a dedicated Geotechnical Sub-Alliance for the Sizewell C nuclear project, in what is believed to be a first-of-its-kind delivery model on a UK megaproject. The alliance is expected to coordinate complex ground engineering packages for the twin EPR units, including deep foundations, retaining structures and heavy temporary works for major nuclear island and marine structures. For contractors and designers, the move signals tighter integration of design–build geotechnical risk management on a highly regulated, coastal, soft-ground site.

Laing O’Rourke has appointed Clare Rodgers as head of Expanded Geotechnical, making her the first female business unit leader across any of the contractor’s specialist trading businesses. Rodgers moves from Select, where she was lifting solutions leader responsible for complex crane and heavy lifting strategies, bringing temporary works and lifting logistics expertise directly into the ground engineering unit. She succeeds Ronan O’Rourke, who becomes director of clients and markets for Laing O’Rourke’s Europe Hub, signalling closer alignment between geotechnical delivery and major project clients.

Balfour Beatty Ground Engineering, VSL Systems (UK) and Bachy Soletanche will jointly deliver major geotechnical works for the Sizewell C nuclear project, covering piling, soil mixing, diaphragm walls and plastic cut-off walls. The package will form key below-ground containment and support structures for the twin EPR units, where groundwater control and long-term settlement performance are critical on the Suffolk coast. The collaboration signals early locking-in of specialist contractors for complex deep-foundation and seepage-control systems on one of the UK’s largest current infrastructure schemes.

An updated “higher confidence model” from the British Geological Survey refines estimates of superficial deposit thickness above Great Britain’s bedrock, giving engineers improved depth-to-rock data for foundations, earthworks and buried infrastructure. The model integrates existing BGS geological mapping with borehole records and geophysical datasets to reduce uncertainty in areas with complex drift sequences and variable till or alluvium cover. Practitioners can use the outputs to optimise preliminary ground investigation targeting, refine early-stage design assumptions and better screen geohazard susceptibility at corridor and site scale.

Publication by the British Geological Survey of final borehole data packs and a full drilling report from the UK Geoenergy Observatory in Cheshire provides open access to high‑resolution geological, hydrogeological and geophysical logs for the Sherwood Sandstone aquifer. The dataset covers multiple cored and instrumented boreholes with continuous wireline logging, groundwater monitoring and core descriptions, giving engineers direct parameters for permeability, stratigraphy and faulting. Geotechnical, geothermal and energy‑storage designers can now calibrate numerical models, assess thermal and hydraulic behaviour, and de‑risk subsurface infrastructure in similar Triassic sandstone settings.

Georgia Tech’s Geosystems group has released high‑resolution digital scans of Prof George F. Sowers’ handwritten Harvard course notes from the late 1940s, capturing original lectures by Karl Terzaghi and Arthur Casagrande on topics such as effective stress, consolidation and stability analysis. The archive, drawn from Sowers’ time as a graduate student, preserves worked examples, early design charts and problem sets that pre‑date many modern textbooks. Practitioners gain direct access to primary teaching material from the formative period of modern soil mechanics for reference, teaching and historical comparison.

New British Geological Survey mapping of the upper 2m of seabed across the UK North Sea shows highly variable near-surface geology, challenging assumptions of relatively uniform sands used in many cable burial designs. The work identifies rapid lateral changes between sands, gravels, soft sediments and lag deposits at scales relevant to ploughs and jetting tools, with implications for trench stability, target burial depths and pull-out resistance for subsea power and telecoms cables. Designers may need denser geophysical and geotechnical sampling and more adaptable burial equipment specifications.

Helical piles and anchors are presented as displacement deep foundations whose performance depends on correctly specifying helix geometry (diameter, pitch, spacing), shaft type (solid square vs hollow round), and corrosion protection for the design life. The guide stresses matching installation torque to required axial capacity, using torque correlation factors (Kt) appropriate to soil type, and defining minimum embedment depth and number of helices rather than leaving these to contractors. Engineers are urged to state load cases (tension, compression, lateral), serviceability criteria, and testing requirements such as proof and pre-production load tests.

Contractors McIlwain Civil Engineering and SEE Civil Joint Venture have secured the next stage of early works for Queensland’s Mooloolah River Interchange, a key connection for the Sunshine Motorway and Nicklin Way on the Sunshine Coast. The package centres on large-scale earthworks and embankment construction to build up formation levels and stabilise ground conditions ahead of the full interchange upgrade. Geotechnical focus will be on settlement control and embankment performance in a coastal, flood-prone corridor before major bridge and traffic-switching works proceed.

New climate-modelling by the British Geological Survey (BGS) projects that up to 11% of UK homes – several million properties – could face increased clay-related subsidence risk by 2070 as hotter, drier summers drive greater soil shrink–swell. The work uses UKCP18 climate scenarios to map susceptibility on shrink–swell clays, flagging particular exposure in southern and eastern England where high-plasticity London Clay and similar formations are widespread. For geotechnical and asset engineers, this points to tighter foundation design, tree and drainage management, and targeted monitoring of existing low-rise housing stock.

Professor Lyesse Laloui has been elected President of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE) for 2026–2029 at the Vienna Council Meeting held alongside the XXI ICSMGE 2026. Laloui, Chair Professor at EPFL and director of its Laboratory for Soil Mechanics, brings a portfolio of more than 560 publications and 19,000+ citations spanning constitutive modelling, energy geostructures, CO₂ storage and multiphase porous media. The Council also confirmed XXII ICSMGE for Shanghai in November 2029 and the next Council Meeting in Istanbul, 20–25 August 2028.

Researchers at UC Berkeley, funded by Yuba Water, have launched a Levee Digital Twin Platform for the Yuba River corridor, integrating continuous sensor data, geotechnical models and inspection records into an interactive system for levee condition assessment. The platform combines real-time pore pressure and deformation monitoring with historical performance data to flag anomalous behaviour along specific reaches and embankment sections. Engineers can use the tool to prioritise field investigations, refine seepage and stability analyses, and plan targeted remediation before high-flow events.

The Corporate Associates Presidential Group of ISSMGE will run a dedicated panel at the 21st International Conference on Soil Mechanics and Geotechnical Engineering in Vienna in 2026, focusing on the future of geotechnical engineering practice. Industry leaders from major consulting firms, contractors and equipment suppliers are expected to address digital design workflows, advanced in situ testing, and risk allocation in large infrastructure projects. Outcomes are likely to influence updates to corporate design standards, procurement strategies and adoption of emerging investigation and monitoring technologies.

Geosynthetics are moving from niche products to standard tools for Australian infrastructure delivery as Geoquest deploys geogrids, geotextiles and geocells to tackle increasingly poor ground and constrained project footprints. The company is customising reinforced soil structures, basal reinforcement and pavement subgrade improvement systems to reduce imported fill volumes, shorten construction programmes and enable construction over soft clays and variable alluvium that would previously require deep piling. For practitioners, the shift allows slimmer pavement designs, higher embankments on marginal soils and more predictable deformation behaviour under traffic loading.

Vinci Construction has expanded its Latin American ground technologies portfolio by acquiring Grupo TDM’s geosynthetics division in Peru, a regional supplier of geotextiles, geomembranes and geogrids for mining, road and hydraulic works. The deal gives Vinci direct control of design–supply–install capability for reinforced soil walls, basal reinforcement and lining systems on high-embankment highways and tailings storage facilities in the Andes. For geotechnical contractors and designers, this signals stronger OEM-backed support for geosynthetic solutions on steep slopes, soft-ground foundations and aggressive seismic conditions in the region.

Inter‑helix spacing for helical piles and anchors is traced from early empirical rules of thumb (typically 3× helix diameter) to current design approaches based on cylindrical shear and individual bearing models. The review compares performance implications of close spacing (overlapping stress bulbs, higher installation torque, potential group behaviour) versus wider spacing (reduced interaction, deeper embedment, more steel), and links them to torque‑to‑capacity correlations. For practitioners, it clarifies when legacy spacing rules remain adequate and when soil type, load regime, and installation constraints justify project‑specific optimisation.

Tasmania’s Government has let a contract to dismantle and compact the early‑20th‑century Goods Shed at Macquarie Point to clear the site for a $1.13 billion multi‑purpose stadium in Hobart. The former rail and port freight hub will be packed down to formation level, providing a prepared platform for the stadium’s deep foundations, services corridors and future transport interfaces. Geotechnical teams will need to manage demolition spoil, variable fill and potential contamination typical of historic industrial waterfronts before main works can proceed.

Keller North America has expanded its field engineer / project engineer development programme after a successful pilot, formalising a structured path from site-based roles into project management and technical leadership. The scheme combines intensive on-the-job training on ground improvement and deep foundation projects with rotations through estimating, design, and operations, exposing graduates to tools such as geotechnical instrumentation, grout mix design, and pile load testing. For contractors and clients, the move signals a pipeline of early-career engineers with stronger design–build integration skills and site-ready competence.

Recent high-rise construction in South Florida is driving demand for deep foundations in karstic limestone, with Keller using large-diameter drilled shafts and augered cast-in-place piles to control settlement in weak, highly variable strata. The DFI Deep Foundations Magazine feature by Michael Meneses, Will Burgos, and James Hussin details case histories where groundwater levels near sea level, aggressive chloride environments, and strict lateral deflection limits governed design. For practitioners, the projects emphasise rigorous geotechnical characterisation, corrosion protection strategies, and construction QA/QC to manage risk in coastal high-rise work.

The British Geological Survey is advancing a national geotechnical data service to collate UK ground investigation records into a single, standardised digital platform for project teams. By aggregating borehole logs, in situ test results and laboratory data from multiple legacy sources, the system aims to give designers earlier visibility of variable strata, groundwater conditions and historical contamination. For geotechnical and civil engineers, this could reduce duplicate site investigations, refine ground models at concept stage and improve risk pricing for foundations, earthworks and underground structures.

A 93m-long bridge over the White Cart Water forms the core of the Amids South transport scheme, linking an existing industrial area to Paisley town centre and Glasgow Airport. Poor ground conditions along the river corridor drove a redesign of the substructure, with foundations and pier locations adjusted to avoid weak strata and reduce settlement risk. The scheme’s experience will interest geotechnical and bridge engineers dealing with soft alluvium and variable bearing capacity on constrained urban river crossings.

Gary L. Seider, P.E., is retiring after nearly 40 years with A.B. Chance, where he was instrumental in developing helical pile and anchor systems that became core to Hubbell’s foundation solutions portfolio after its 1994 acquisition. His work helped formalise design methodologies, installation torque–capacity correlations and training standards for contractors and engineers using screw anchors in transmission, distribution and commercial foundation projects. Seider’s legacy is a mature, codified helical foundation practice that many US geotechnical and structural engineers now treat as a routine design option.

Two engineering consortia have been shortlisted by the New South Wales Government to design and deliver a fix for Mitchells Causeway on the Great Western Highway at Victoria Pass, closed since March after substantial cracking and ground movement were detected. The move follows an industry briefing and on-site inspection involving 20 Australian and international firms, signalling complex geotechnical and structural stabilisation requirements on this steep Blue Mountains section. Outcomes will directly affect detour durations, heavy vehicle access and long-term slope and pavement performance on this key freight and commuter corridor.

Mexico City’s subsidence has been mapped in new detail by the NASA–ISRO NISAR L-band radar mission, revealing metropolitan zones sinking by more than 50cm per year over clay-rich former lakebed deposits. Interferometric SAR time-series show differential settlement across key infrastructure corridors, with some districts exhibiting cumulative subsidence of several metres over recent decades, far exceeding typical building serviceability limits. The data set offers geotechnical engineers block-scale deformation rates to refine foundation design, tunnel and metro monitoring, and groundwater extraction management.

Brownfield infrastructure projects are seeing geotechnical and environmental teams urged to integrate ground investigation, contamination data and 3D ground models from the outset, rather than running parallel site characterisation workflows. The piece stresses unified digital datasets combining borehole logs, in situ test results and contaminant plumes to refine ground risk registers, optimise foundation and earthworks design, and avoid late-stage remediation surprises. Case experience shows that early joint modelling of variable made ground, buried obstructions and legacy industrial pollution can materially cut unforeseen ground conditions claims and programme delays.

Rock & Alluvium, part of Van Elle, has installed its deepest continuous flight auger piles to date, reaching 40m, for the Bow Green development in East London. The record-depth CFA piles indicate challenging ground conditions and high load or settlement performance requirements typical of dense urban sites near the Thames. Contractors and designers may need to consider comparable pile lengths, rig capabilities and spoil management strategies for future high-rise or mixed-use schemes in similar London alluvial and made-ground profiles.

Helical piles are presented as displacement deep foundations that can be installed with small hydraulic drive heads on mini-excavators or skid steers, generating minimal spoil and vibration compared with driven piles. The FAQ addresses load capacity verification via torque correlation (e.g. kN-m per kN of capacity), corrosion protection options such as hot-dip galvanising and increased sacrificial thickness, and suitability in soft clays, fills, and below groundwater. Design is framed around ICC-ES AC358, with emphasis on tension, compression, and lateral performance for underpinning, boardwalks, and utility structures.

Settlement prediction in layered soils is shown to depend strongly on how vertical stress increments are computed, comparing classical Boussinesq-based methods with numerical analyses in Settle3, RS2, and RS3. The piece contrasts 1D influence-factor approaches against 2D/3D finite element and finite difference models that capture stiffness contrasts, non-linear behaviour, and complex load geometries. For practitioners, it signals when simple elastic solutions become overly conservative and when full numerical stress redistribution is needed to refine serviceability settlement estimates.

Quaise Energy is advancing Project Obsidian in Oregon, aiming to build the first superhot geothermal plant by drilling into rock above 300°C and delivering a baseload 50 MW from only a handful of wells by 2030. A modelling analysis presented at the 2026 Stanford Geothermal Workshop by senior mechanical engineer Daniel W. Dichter indicates higher subsurface temperatures could ultimately support 250 MW in phase two, with a regional goal of 1 GW. The confirmation well is due online later this year, with lab work at Oregon State University recreating extreme downhole geochemical conditions.

Keller has appointed Scott Nichols as President of Keller North America and promoted Curtis Cook to President of its US Foundations business unit, reshaping leadership at one of the region’s largest geotechnical contractors. Nichols will oversee a portfolio spanning ground improvement, grouting, deep foundations and earth retention across Canada, the United States and Mexico, while Cook will focus on US piling and shoring operations. The changes signal continuity of in-house leadership and may influence procurement, partnering and design–build delivery on major foundation and ground engineering projects.

Former Keller Group chief executive Michael Speakman has died, with the ground engineering contractor announcing his death on 9 April following his passing last week. Speakman led Keller, one of the world’s largest specialist geotechnical contractors with operations across piling, ground improvement and grouting, through a period of major infrastructure delivery in transport, energy and urban development. His death removes a senior industry figure with deep experience in large-diameter piling, complex ground stabilisation and international project delivery.

Groundforce Shorco has installed nine modular hydraulic props to brace a 4m-deep, 50m by 40m basement excavation for a new six-storey, 108-bed Clore Manor care home with underground parking in Hendon, north London. A secant-piled retaining wall is supported by six MP150 raking props (7.3–10.3m) along the northern edge and three high-stiffness MP375 props on the eastern side, adjacent to the Great North Way and a deeper attenuation-tank excavation. Deflection was limited to ±10mm, driving the choice of MP375s for stiffness rather than their 375t (3,677kN) axial capacity.

Strabag UK has agreed to acquire Van Elle Holdings, one of the UK’s largest specialist geotechnical contractors, in a deal valuing the business at £58.8M. The takeover brings Van Elle’s piling, ground improvement and rail geotechnics capability into the Austrian Strabag Group’s UK portfolio, strengthening its in-house delivery for major infrastructure such as HS2 and National Highways schemes. Contractors and consultants can expect a better-integrated design-and-build offer on complex foundations, retaining structures and track-bed works, but also increased competition in the UK ground engineering market.

NASA’s Artemis II crew has completed a geology‑focused lunar flyby, using high‑resolution imaging and LiDAR to map candidate Artemis III landing zones across the South Pole–Aitken Basin and other polar regions. Astronauts conducted real‑time visual stratigraphy logging of crater walls up to several kilometres deep and coordinated spectral observations of suspected pyroclastic deposits and boulder fields larger than 5 metres. The resulting datasets on regolith thickness, block size distributions and slope angles are expected to refine bearing capacity models, excavation strategies and ground‑anchor design for future lunar surface infrastructure.

Budimex has been selected as preferred contractor for deep foundation works on the passenger terminal of Poland’s planned Centralny Port Komunikacyjny (CPK), part of the £27bn Port Polska hub between Warsaw and Łódź. The package will focus on large-scale piling and ground improvement for the main terminal superstructure, a critical early works phase on the greenfield site’s challenging alluvial and glacial deposits. Geotechnical contractors and designers will be watching for CPK’s chosen pile types, installation methods and monitoring regimes, which are likely to set benchmarks for subsequent airside and rail interfaces.

Construction of a 6km offshore breakwater with Europe’s deepest foundations is pushing marine geotechnical limits, with caissons and foundation elements installed in exceptionally deep water using heavy-lift vessels and precision positioning systems. Complex offsite fabrication of large concrete units, likely in a dedicated casting yard with slipform or match-cast techniques, is being coordinated with narrow marine weather windows and high-capacity barges to maintain programme. For designers and contractors, the project stresses accurate seabed characterisation, robust scour protection detailing and tight control of tolerances during submerged placement.

Excavation is under way 1.5km below ground at the Long Baseline Neutrino Facility in South Dakota to create three caverns, each roughly cathedral-sized, to house the Deep Underground Neutrino Experiment’s liquid-argon detectors. The 1,300km-long beamline from Fermilab to the former Homestake gold mine demands tight control of rock mass behaviour, with extensive pre-grouting, cable bolting and shotcrete linings in complex, stressed Precambrian formations. Construction sequencing, spoil handling through deep shafts and long-term groundwater management are central geotechnical risks for the multi-year programme.

Immediate load capacity of helical anchors and piles at installation is being challenged by data showing significant “aging” effects, with shaft resistance and overall capacity increasing measurably over days to months in clays and some sands. The discussion contrasts torque-correlated design methods with time-dependent capacity gains, referencing field load tests where post-installation capacity growth alters factor-of-safety assumptions and serviceability performance. For practitioners, the key issue is whether to rely solely on installation torque or to incorporate waiting periods and ageing factors into design for temporary works, tiebacks and lightly loaded foundations.

JP Giroud’s legacy site consolidates more than 400 technical documents, including his 1977 geomembrane liner leakage formulation and 1982 composite liner concept, which underpin modern landfill and heap leach barrier design. The archive spans Terzaghi Lecture materials, ASCE Geo-Institute Hero content, and International Geosynthetics Society presidential work from 1986–1990, plus design charts, case histories, and conference keynotes. Practitioners gain a single reference point for Giroud’s methods on leakage control, stability of geosynthetic-lined slopes, and geosynthetic-reinforced soil structures.

Britain’s first continuous geothermal power plant has begun commercial operation in Cornwall, supplying baseload electricity to the grid for 24/7 generation rather than heat-only or pilot‑scale output. The project uses deep geothermal wells drilled several kilometres into hot granite, circulating water through a closed-loop system to drive a surface power plant via binary-cycle technology. For civil and geotechnical engineers, the scheme tests high‑temperature casing design, long‑term borehole stability in fractured rock, and integration of geothermal infrastructure with existing grid and planning frameworks in the UK.

Numerical modelling of deep underground excavations using RS2 and the Confinement-Dependent Visco-Plastic Model (CVBM) is used to capture spalling in jointed rock masses where confinement drops and tangential stresses concentrate around excavation boundaries. The approach contrasts brittle spalling in massive, low-porosity rock with more ductile behaviour in highly jointed rock, explicitly representing joint orientation, spacing, and strength. For design, this enables more realistic prediction of depth of failure, damage zones, and support demand around tunnels and caverns at high stress ratios.

GeoStruxer’s digital twin of a 12,000‑square‑metre grain warehouse in Jazan, Saudi Arabia, enabled a redesign of the original slab‑on‑grade foundation to a piled solution that cut pile numbers by 70% and CO₂ emissions by 44%. Using Bentley’s PLAXIS 3D and Leapfrog, the team integrated geotechnical models with structural analysis to optimise pile length, spacing, and layout while maintaining bearing capacity and settlement criteria. The approach reduced concrete and steel quantities, shortened construction time, and provided a reusable geotechnical model for future port developments.

A levee stability example models a flood event over a confined aquifer, comparing pore-water pressure definitions under different PLAXIS licensing options (2D, LE, and LE Advanced). The case contrasts simple hydrostatic assumptions with transient seepage and confined aquifer responses, including delayed pressure dissipation and uplift at the levee toe. Results show how choice of pore-pressure model and licence level materially changes calculated factors of safety and potential slip surfaces, directly affecting design decisions for flood defence embankments on artesian foundations.

Pile Dynamics, Inc. and GRL Engineers, Inc. will run a one-day 2026 “State of Practice” seminar focused on quality control for deep foundations, covering benefits, methods, interpretations, risks and implementation. The programme centres on modern testing and monitoring approaches for driven piles and drilled shafts, including practical guidance on data interpretation and risk management. Geotechnical practitioners can expect applied content directly relevant to foundation load testing, integrity assessment and construction QC procedures.

Helical piles are being positioned as an alternative to traditional drilled or spread concrete foundations for lattice and monopole communication towers, particularly where uplift, lateral loads and variable soils control design. Screw-in steel piles with helix plates can be installed with smaller rigs, generate minimal spoil, allow immediate loading and are removable at decommissioning, contrasting with large-diameter drilled shafts or pad-and-pier systems that require curing time and substantial excavation. The comparison focuses on sites with constrained access, weak or layered soils, and projects needing rapid deployment or future relocation.

Thames Water has launched procurement for a multi‑lot framework worth up to £177M (excluding VAT) to deliver site investigation surveys across its asset base. The framework will cover intrusive and non‑intrusive ground investigations, including boreholes, trial pits, in‑situ testing and laboratory analysis to support major water and wastewater infrastructure works. Geotechnical and environmental consultants and drilling contractors can expect long‑term programmes tied to pipeline renewals, treatment works upgrades and resilience schemes across the Thames Water region.

Persimmon Homes has partnered with ground engineering technology firm Ecofill to re-use site-won excavated soils as engineered fill in adoptable roads, retaining walls, piling mats, embankments and trench backfills, displacing imported primary aggregates. Ecofill’s process allows classification and treatment of cohesive and granular arisings to meet highways and structural fill specifications, reducing soil sent to landfill and cutting lorry movements for aggregate haulage. The move signals wider potential for specification-compliant reuse of marginal soils on large housing schemes under UK earthworks and highway adoption standards.