Risk in Geotechnical Practice: Dealing With Uncertain Ground
Tools for identifying and managing risk in geotechnical engineering projects. Risk is an inherent component of all types of projects, no matter the size or discipline. Geotechnical engineering projects...

Risk in Geotechnical Practice: Unraveling Foundation Uncertainty
Statistical Analysis Offers a Rational Approach for Controlling Foundation Risk in Design-Build Projects. For the past 20 years, design-build (DB) procurement has become the default for many transportation...

Risk in Geotechnical Practice: Geotechnical Judgment
People use judgment in every aspect of their lives. We rely on our judgments to make decisions that can have consequences from small to large on ourselves and on others, sometimes with life-threatening...

Court Examines Engineer’s Liability Under Design-Build Agreement

Laying the Foundations

Reliability-Based Design (RBD) For Everyone: (No Monte Carlo Simulation Required!)
In North America, the design of earth structures for transportation applications is most often carried out using load and resistance factor design (LRFD). In the U.S., the AASHTO LRFD Bridge Design Specifications...

A Combo Foundation Does the Job: Piled-Raft Foundation Design for a Supertall Skyscraper
Lotte World Tower is a 123-story, 555-m supertall skyscraper with a 6-level basement for retail and car parking located at Jamsil-dong in Seoul, South Korea. (Editor’s Note: For additional information,...

Unexpected Delay
The biggest project risk in Washington State's new State Route 99 tunnel was at the south end, where the tunnel begins. If the tunnel boring machine (TBM) could tunnel through that initial zone problem-free,...

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...

Advances In Geosynthetic Solutions For Sustainable Landfill Design: Geosynthetics Really Do Last!
Even though geosynthetics are now a well-established discipline within geotechnical engineering, ingenuity continues to play a significant role in projects involving their use. This is because it’s possible...

Novel Computing Techniques Aid First Responders; Connected Vehicles Can Predict Flooding; Robotic Device Detects Leaks in Plastic, Metal Pipes; Sound Used to Manage Landfill Gas Collection
New developments in disaster response, rainfall tracking, water-leak detection, and landfill gas collection are highlighted....

Energy Star
The recently opened corporate headquarters of United Therapeutics is one of the largest net-zero energy office buildings in the world. Geo-exchange wells, an earth labyrinth, natural ventilation, and electrochromic...

Transformative Tunnel
The design of the new State Route 99 tunnel improves safety and mobility along Seattle's waterfront. Its design overcomes settlement and seismic challenges, incorporates a one-pass segmental liner, and...

An Evolving Alignment
As it pursued its plans to design and construct a critical sewer pipeline, the city of Springfield, Ohio, had to make numerous changes to the project's complex alignment to address the concerns of multiple...

Arena of Books
The new Qatar National Library features a folded design with cantilevered corners on the exterior, while inside, an enormous single space for reading or socializing offers terraces stacked with bookshelves....

Training for Disaster
The structural complexes used to train first responders must accommodate a wide range of theoretical and practical learning. From classroom spaces to built-to-burn assemblies to buildings within buildings,...

Are Prescriptive Specifications in Design/Build Contracts Traps for the Unwary?
This month’s case, Appeal of American West Construction LLC, examines how one government board viewed the issue of prescriptive specifications in design/build contracts....

Virtual Reality Helps Secure Public Approval
A design team used virtual reality to generate public approval of a proposed bike and pedestrian path for the west span of the San Francisco-Oakland Bay Bridge in California....

Pumping Up Flood Defenses
Completed in April 2018, the $731-million Permanent Canal Closures and Pumps project represents the final component of the overall Hurricane and Storm Damage Risk Reduction System that serves the greater...

Teaching Cars to Drive
The Michigan-based American Center for Mobility is located at a former World War II bomber factory, later an auto plant, that was environmentally challenged after decades of industrial use. Though the...

 

 

 

 

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