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Malibu sinkhole near reported Nicolas Cage property exposes coastal erosion risk

A large ground collapse beside a beachfront Malibu property reportedly owned by Nicolas Cage has been linked to coastal erosion, seawall undermining and strong wave action associated with Hurricane Ma...

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More Control, More Flexibility, and a More Efficient Analysis Workflow: Three New Features in RocSlope2

Rock slope stability analysis rarely ends with a single number. While the Factor of Safety remains a fundamental measure of stability, real-world engineering workflows often require much more: isolati...

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How PLAXIS 2D Helps Explain Rainfall-Triggered Debris Flows

Debris flows are among the fastest and most destructive forms of slope failure, and predicting when and how they initiate remains one of geotechnical engineering's toughest hazard-assessment problems....

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California's landslide bypass tunnel moves into design

Caltrans has advanced the Last Chance Grade tunnel project into detailed design, moving closer to a long-term solution for one of the most unstable sections of US Highway 101 in northern California.Th...

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TBM launch shaft works advance for Poland’s high-speed rail tunnel

Preparation for Poland’s high-speed rail tunnel beneath Lodz has reached an important stage, with the launch cradle completed inside the Retkinia launch chamber and assembly of the tunnel boring machi...

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Industry Section

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Hot-dip galvanized steel foundations demonstrate corrosion resistance over decades of field service

Evaluations of hot-dip galvanized Chance® Instant Foundations installed in the early 1980s have confirmed continued structural performance after more than four decades in service. The foundations util...

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Côte d'Ivoire state miner SODEMI adopts geophysical software to accelerate mineral exploration

The Société d'état pour le Développement Minier de la Côte d'Ivoire (SODEMI), the state-owned mining corporation of Côte d'Ivoire established in 1962, has integrated Seequent's Oasis montaj and VOXI s...

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Single-Helix Anchors and Piles Show Load Capacity Gains of up to Seven Times Over Plain Pipe Piles

Dr. Alan J. Lutenegger, Emeritus Professor of Geotechnical Engineering at the University of Massachusetts-Amherst, published a technical analysis examining how the addition of a single helical plate t...

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Year in Infrastructure 2026: acknowledging subsurface innovation and excellence

Bentley Systems has announced the finalists for the 2026 Year in Infrastructure Awards, highlighting infrastructure projects that are advancing digital engineering and helping solve some of the world’...

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Spatial Safety Maps from RS3 SSR Results: A Python Post-Processing Workflow

Introduction Shear Strength Reduction (SSR) analysis is a well-established method for assessing the stability of slopes and other geotechnical infrastructure, including open pits. In RS3, SSR yields a...

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September 17th 1959

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Editor's Pick

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Himalayan glacial collapse triggers deadly floods across Nepal and Tibet

More than 1,300 people are missing across Nepal and China’s Tibet region after a sudden collapse of mud, rock and ice triggered catastrophic flooding through Himalayan valleys. At least 165 people hav...

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Education

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Construction Sequence and Quality Control

The performance of reinforced soil depends heavily on construction. Even a correctly designed product can be compromised by poor orientation, damage, inadequate compaction or uncontrolled water. The g...

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Simplified Worked Example: Internal Stability of a Reinforced Soil Wall

This example demonstrates two basic internal checks for a 6.0 m high geogrid-reinforced soil wall: tensile rupture and reinforcement pullout. It is intentionally simplified, uses level granular backfi...

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Design Philosophy and Governing Checks

From Product Property to Design Resistance Design begins by defining the problem, the governing limit states, the design life, the ground conditions and the construction sequence. Index product data...

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Principal Geotechnical Applications

Mechanically Stabilized Earth Walls In an MSE wall, horizontal layers of geogrid extend from the facing into compacted structural backfill. The soil tends to move laterally, while the reinforcement c...

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Engineering Properties and Laboratory Testing

Tensile Force-Strain Response Geogrid tensile properties are normally reported as force per unit width, such as kilonewtons per metre. The full force-strain curve is often more useful than the ultima...

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Reinforcement and Stabilization Mechanisms

Tensile Reinforcement The most fundamental mechanism is tensile reinforcement. As the soil mass tends to deform, relative movement develops between the soil and the geogrid. Interface shear and beari...

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Geogrids and the Concept of Reinforced Soil

What Is a Geogrid? A geogrid is a planar geosynthetic product formed by connected tensile members that create a regular or quasi-regular network of openings, known as apertures. It is installed withi...

Books

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Geotechnical Earthquake Engineering

This fully updated second edition provides an introduction to geotechnical earthquake engineering for first-year graduate students in geotechnical or earthquake engineering graduate programs with a l...

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2024 Geotechnical Business Directory

This unique annual business directory is published by GeoWorld, the professional network for geotechnical engineers, which currently includes 37,000+ professionals and 1,000+ companies and organizatio...

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2025 Special Edition USA & Canada Geotechnical Business Directory

This unique annual business directory is published by GeoWorld, the professional network for geotechnical engineers, which currently includes 40,500+ professionals and 1,100+ companies and organizatio...