What Does the Crystal Ball Say? Energy and Water Issues Are Too Great to Ignore!
Over the past 15 years, the Geoprofessional Business Association's (GBA) Emerging Issues and Trends Committee has held a series of Crystal Ball Workshops (Workshops) to identify long-term emerging issues...

Restoring Steinbeck's Carmel River: The Removal of San Clemente Dam
If you've read John Steinbeck's 1945 classic "Cannery Row," then you're already familiar with the Carmel River, which he described as "…a lovely little river. It isn't very long, but in its course it has...

Whose "Fault" Is This? Overcoming Faulting and Ancient Landslides in a Dam Abutment
The Calaveras Dam Replacement Project (CDRP) is the largest project in the San Francisco Public Utilities Commission's (SFPUC) $4.8 billion, multi-year Water System Improvement Program (WSIP). The program...

Dam Safety Management Using Risk-Informed Decision-Making Methods: A Powerful Tool or an Unnecessary Venture?
This article discusses design standards, safety methods, and risk-informed decision-making methods for dams....

The Case for Tolerable Risk Guidelines to Manage Flood Risk: Nature Bats Last
Since ancient times, people have used levees to reduce flood risk. We have built over 30,000 miles of levees in the U.S., largely on the belief that levies will unconditionally protect people who live...

Tailings Dam Engineer of Record (EoR): There's Nothing Conventional About It
Engineer of Record (EoR) is a simple and resolute concept that's applied throughout the western world for civil works construction. It's a term that fits in a nice neat box; it represents a single person...

Open Pit Geotechnics: Designing Slopes for a Very Deep Hole
For most hard rock surface mining operations, the development of an open pit is required to extract the ore resource. In designing an open pit, the challenge is to develop the most cost-effective pit slopes...

Where Geosynthetics Meet Mining Geotechnics: Part of the Mining Engineer's Toolbox
From enhancing stability to providing environmental containment, geosynthetic materials play an important role in mining projects and geotechnics in general. While often overlooked, advancements in geosynthetic...

Journal of Transportation Engineering, Part A: Systems
The Journal of Transportation Engineering, Part A: Systems contains technical and professional engineering articles on the planning, design, construction, operation, and maintenance of air, highway, rail,...

Wider and Deeper
A key component of the recent Panama Canal expansion involved the widening and deepening of Gatun Lake, the artificial lake that serves as the canal's reservoir, and the deepening of the Culebra Cut (also...

Raising Gatun Lake
Raising the maximum operating level of Gatun Lake was one of the four main undertakings of the Panama Canal expansion project. Its goal was to increase the storage capacity for water used for human consumption...

Guidelines for Construction Vibrations: How Much Rattle is Too Much?
The study of construction/blast-related ground vibrations on structures, people, and objects is a surprisingly diverse field. Vibration sources vary from blasting, all types of construction equipment,...

Automated Vibration Monitoring for Construction Applications: A Retrospective and Current Practice or… Everything Is so Much Easier Now!
My career in vibration monitoring (VM) began in the late 1980s. At that time, the state of the practice was primarily focused on blasting operations, which was driven by a boom in highway construction...

Value Engineering Shaves Years and $1.8 Billion from Ohio River Bridges Project
A value engineering process for the Ohio River Bridges Project, of which the Lewis and Clark Bridge is just one part, saved more than $1.8 billion and shaved nine years from earlier estimates....

Soil Nailing in the 2010s: Its Evolution and Coming of Age
While the early 2000s witnessed soil nailing as a well-established method in the U.S. for providing temporary and permanent support of excavation (SOE), the technique has since continued to evolve thanks...

Emergency Retaining Wall Replacement: The East 26th Street Slide Repair in Baltimore, MD
During a record rainfall on April 30, 2014, a century-old, stone retaining wall between a dense urban roadway (26th Street) and the CSXT railroad track in Baltimore, MD, failed. The stone retaining wall...

Highway Retaining Walls are Assets: A Risk-Based Approach for Managing Them
Throughout history, retaining walls (RWs) have served a vital role in supporting civil infrastructure. The ruins of dry stone walls that purportedly supported the hills and slopes of ancient Rome can be...

Deep Mixing Grows Up: The Evolution of Deep-Mixing Technology in the U.S. Market over the Last Decade
Over the last decade, deep mixing in the U.S. market has grown from being something of a mystery into a reliable ground modification technology that can be designed rationally, implemented with capable...

Foundation Reuse and Enhancement: A Viable Option for Bridge Widening and Replacement Projects
The transportation system in the U.S. includes over 607,000 bridges for grade separations, interchange configurations, and stream crossings. As governmental entities embark on the rehabilitation and rebuilding...

Answering the $64,000 Question: Geotechnical Risk in Design-Build Projects
Subsurface risk may well be the aspect of most construction projects that has the greatest potential impact on a project's success or failure. Even when a thorough geotechnical investigation is conducted...

 

 

 

 

Return to search