A Brief History of Jet Grouting in the Last 50 Years: The Story of Its Evolution
Jet grouting, a grouting soil improvement construction technique, was first developed in Japan in the 1960s and 1970s, and then introduced in Europe a few years later in the form of a proposal for soil...

Working Platforms for Specialty Geo-Construction
A major cause of rigs toppling over is the state of the "working platform" that they must work from. A working platform is a layer of material, often compacted sand or gravel, placed over the subgrade,...

Your Numerical Model Begins at the Site Investigation — Phase Improving the Suitability of Numerical Geotechnical Modeling
The success of an advanced geotechnical numerical analysis depends foremost on a thorough geologic and geotechnical understanding of the site, and thus the geometric definition and adequacy of input parameters...

When AI Meets DIGGS — The Birth of a New Site Characterization Paradigm?
Drilling and sampling to obtain borehole logs, together with various in-situ testing, are usually performed to determine subsurface soil and rock profiles and their associated engineering properties. However,...

Practical Aspects Of Routine Geotechnical Site Investigations — They Should Be Anything But Boring!
It’s likely that on any given day there are hundreds of geotechnical site investigations in progress in North America alone. While many of these investigations are carried out in support of large projects,...

Fire & Water
Over the years, wildfires have crept out of the wild and into the urban landscape, threatening more lives, property, and infrastructure than ever before, sometimes devastating communities. In Paradise,...

Moving Down the Road of Progress: Geosynthetics Subdue Failures on Expansive Clays and Frost-susceptible Soils
Using geosynthetics in roadway projects has provided sustainable alternatives for reconstruction and maintenance and now represents a significant portion of the total geosynthetics market. Geosynthetics...

Revolutionizing Containment Applications: Geosynthetics are Amazingly Good, But Not Magical
Geotextiles and geomembranes have been around for more than 40 years and geosynthetic clay liners (GCLs) for more than 25 years. During that time, they have revolutionized the containment of fluids. Their...

Seismic Performance of a Deep Soil Mixing Grid: A Magnitude 7.1 Load Test at the Port of Alaska
The Port of Alaska in Anchorage (Port) has embarked on a multiphase modernization program that includes the development of a new petroleum and cement terminal (PCT) berth. The berth consists of a pile-supported...

Design of Shoreline Protection Measures : The Importance of Geotechnical Engineering in Waterfront Design
Over the past decade, there’s been an increased realization of the need to better protect our shorelines, particularly in urban environments along coastlines that have already been impacted by storm surge...

One Park, Many Functions
The Eastern Glades project in Houston has added a new artificial lake and other amenities to the city’s Memorial Park. As a highlight of the park’s 10-year master plan, the multifunction Hines Lake provides...

Preparing for Wind and Water
Engineers have played an essential role in preparing cities and states for the 2021 hurricane season.Their efforts to protect the public and public infrastructure range from sea walls to sewer systems,...

Highway Embankment Failure on Soft Clay: Bad Input = Bad Output
Our ability to analyze and compute 2D and 3D factors of safety for embankments and slopes, including finite element and finite difference analyses, has increased greatly in the last decade. However, use...

Learning From Pile Driving Failures: Out of Sight Can't be Out of Mind
The design of driven pile foundations for static service and strength limit state loading conditions is meaningless if the piles cannot be driven to the required depth and nominal resistance without sustaining...

Rethinking Barrier Island Restoration: Building a Resilient Louisiana Coast
Louisiana stands on the front lines of the United States’ fight against coastal erosion and land loss. A combination of rising sea levels, subsidence, wave action, human development, and sediment depravation...

Soil Sampling at Sword Beach in Normandy, France, 1943: How Geotechnical Engineering Influenced the D-Day Invasion
When the World paused last summer to remember the 75th anniversary of D-Day, many of us were gripped by stories, both heroic and horrific, told about the Allied invasion of Normandy’s beaches. One of these...

Big Steps for Mankind: Extraterrestrial Sampling and Exploration 50 Years after Apollo 11
Between June 1966 and January 1968, four Surveyor missions successfully landed on the Moon, collecting invaluable scientific data required to support the coming manned Apollo missions. Central to the goals...

Lead-Free in Louisville
Long before lead in drinking water became a common concern, the Louisville Water Co. began a concerted campaign to identify and remove publicly owned lead service lines from its distribution system. Earlier...

Risk, Resilience, Response
In accordance with the requirements of the America’s Water Infrastructure Act of 2018, U.S. drinking water providers must complete risk and resilience assessments and emergency response plans. Large water...

An Unknown-Unknown Does In An Overpass: A Soil Stockpile on Soft Clay Is Too Much for a Bridge in Canada
Like most structures, bridges are designed for an array of loading conditions. Some loads are known or can be reasonably estimated with confidence (i.e., known-knowns, such as structure dead and vehicular...

 

 

 

 

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