Proactive Management of Landslide- and Rockfall-Prone Slopes: A New Program for Federal Land Management Agencies
Most people realize that the nation's transportation infrastructure is aging faster than federal, state, and local governments can manage with traditional methods. In fact, a national and international...

Paleoflood Analyses For Dam and Levee Safety Assessments: Was that Really the "500-Year Flood"?
What is paleoflood hydrology? How are paleofloods analyzed? What are common paleoflood results? What are the implications of paleoflood analyses?...

When Bridges, Roadways, and Dams Need Our Help: Innovative Techniques Can Help Save Our Nation's Critical Infrastructure
The nation's infrastructure is showing its age. The signs are obvious with structure distress, lack of functionality, and failure reported frequently over the last several decades. Specialty geotechnical...

Supporting A National Treasure: Spruce Tree House Alcove Arch Stabilization
Mesa Verse National Park, located in southwestern Colorado, honors the cultural significance of the fantastic cliff dwellings of the Ancestral Pueblo people, who lived in the area from AD 600 to 1300....

Preserving the Past: Recovering the Destroyed Buddha Statues and Niches in Bamiyan Afghanistan
For millennia, civilizations have built monuments to honor their gods, leaders, or founding principles, and with time those monuments that still exist have become revered treasures. Take, for example,...

Instrumenting a National Landmark's Expansion: the John F. Kennedy Center for the Performing Art
The John F. Kennedy Center for the Performing Arts, located just north of the Lincoln Memorial on the Potomac River in Washington D.C., is currently undergoing expansion. Through a series of spaces that...

Glacier Skywalk: Foundations for a Canadian National Park Landmark
Jasper National Park, the largest national park in the Canadian Rockies, is located in the Province of Alberta, north of Banff National Park and west of Edmonton. Declared a UNESCO World Heritage Site...

What's Hiding Between the Boreholes?
Often, geotechnical explorations consist of a few, strategically placed boreholes and considerable interpolation and extrapolation by the geotechnical engineer. The information between boreholes in most...

Dry Dams in the Desert: Chasing Land Subsidence and Earth Fissures with Geophysics
Homogenous embankment dam flood retention structures (FRSs) were built throughout central Arizona desert basins in the mid-twentieth century to protect mostly agricultural lands and military installations...

State of the Practice for Laboratory Testing of Soft Soils: It's All in the Details
As with all material testing, soils testing has undergone dramatic advances in technology because of computer automation. In the 1970s, laboratories were filled with dial gages, proving rings, mercury...

Oroville Dam Spillway Incident: Putting Community Safety First While Investigating the Cause
The Oroville Dam, and its associated reservoir and hydropower plant facility, is located on the Feather River in Northern California and is owned and operated by the State of California, Department of...

The New Lightweight Contender: Ultra-lightweight Foamed Glass Aggregate Finds the U.S. Market
Geotechnical engineers are often confronted with sites where the existing soil is prone to settlement or where there are subsurface utilities sensitive to additional load. If relocation or realignment...

Properties of Biochar-Amended Highway Soils: Biochar – An Eco-friendly Geomaterial
Historically, geotechnical engineers have designed or modified soils and sediments to achieve particular strength, volume change, or flow characteristics. For example, lime and fly ash have been used to...

What to Do about an Awakened Ancient Landslide: Solving a 75-Year-Old Problem along America’s First Super Highway
In school, we all learned that several factors can contribute to cause a mass of earth to landslide. But with more experience, it becomes clear that these factors must work together to mobilize a landslide....

Sustainability and Resilience in Transportation Infrastructure Geotechnics: Integrating Advanced Technologies for Better Asset Management
The 2030 Agenda for Sustainable Development, adopted by the United Nations General Assembly in September 2015, enumerates 17 sustainable development goals (SDGs) to be achieved by the member countries...

Lightweight Alternatives for Embankments on Soft Ground: A Focus on Railway Systems
Lightweight material for civil engineering application is primarily used for accelerated roadway and bridge approach construction, settlement mitigation, utility and tunnel abandonment, reduction of static...

Avoiding Impacts of Collapsed Mines on Railways: A Multidisciplinary Geophysical Detective Approach
The presence of abandoned mine workings can pose a significant risk to the use and development of surface structures above them, including railway lines. Typically, the adverse and often sudden effects...

Design of the Future Mexico City Airport: Attaining Resilience in Soft Ground
The Lake Texcoco region to the east of Mexico City is famed for its deep lacustrine deposits of compressible clay, which amplify ground shaking during seismic events. The area is also gradually subsiding...

Using Geophysics to Assess Geohazards Before Construction: Increase Your Odds for Success!
Understanding subsurface conditions is the key to any successful construction project, including new construction, excavation, and drilling. The consideration and understanding of the subsurface geology...

A Good Cause for a Causeway: How Geotechnology and Project Delivery Restored a Roadway Embankment Crossing a Historically Challenging Soft Ground Site
As part of a Minnesota Department of Transportation (MnDOT) design-build project, a causeway was constructed in 2017 to replace an aging bridge in the southwest metropolitan area of Minneapolis. The causeway...

 

 

 

 

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