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...

Skinny 'Scrapers
Incredibly slender towers are rising around the globe into the skylines of major cities, especially New York City. Often targeted at the wealthy who are able to pay astronomical price for spectacular views,...

NTSB Issues Preliminary Report on Florida Bridge Collapse
In late May, the National Transportation Safety Board (NTSB) released its preliminary report about the March 15 structural failure and collapose of a partially-constructed pedestrian bridge in Miami....

Permanent Sensors Turn Construction Project into Long-term Research Study
The Centre for Smart Infrastructure and Construction (CSIC) at Cambridge University, in conjunction with Arup, has placed fibre-optic cables that will serve as permanent sensors on the underground structure...

A Different Angle
The unique, sloping shape of the VIA 57 West building is formed from cast-in-place concrete from the single, partial basement level up to the structure's 34th floor; braced galvanized steel framing completes...

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...

Forensic Investigations Get to the Facts: East Side IHNC Flood Wall Breaches during Hurricane Katrina
East Side IHNC Flood Wall Breaches during Hurricane Katrina. I served as a geotechnical expert for the U.S. Department of Justice (DOJ) supporting the defense of the U.S. Army Corps of Engineers (USACE)...

Compliance with the Standard of Care: Hurricane Katrina Canal Breaches in New Orleans’ Lower 9th Ward
Hurricane Katrina Canal Breaches in New Orleans’ Lower 9th Ward. On August 29, 2005, more than 50 levees and flood walls failed to protect New Orleans, LA, during Hurricane Katrina, one of the most devastating...

Rock Glue Gets the Job Done: Reducing Rockfall Hazards along the G.W. Parkway
After a large rockfall damaged the road and disrupted traffic along the George Washington Memorial Parkway in 2002, the National Park Service was looking for solutions to stabilize the slope against additional...

Low-Gravity Experiments: Shear Testing Takes a Nose Dive
A major challenge to making celestial soil mechanics viable is to re-engineer the profession's toolkit to provide geotechnical solutions without the luxury of ex-situ and in-situ testing as we know them...

Calibration of Jackup Leg Foundation Model Using Full-Scale Structural Measurements
The fitness of jack-up rigs to operate in varying water depths and weather conditions is determined by "site-specific" structural assessments. These assessments are conducted by a wide range of companies...

Heave Compensated Landing System - A Novel Tool for Subsea Intervention
This paper presents a new intervention system that allows the use of a low cost workboat to deploy and recover delicate payloads in subsea installations. Vessel motions are decoupled from the subsea package...

Journal of Transportation Engineering, Part B: Pavements
The Journal of Transportation Engineering, Part B: Pavements will contain technical and professional articles on the planning, design, construction, maintenance, and operation of airport, roadway and other...

Nature Sides with the Hidden Flaw: Lessons Learned from Failures of Earth-Support Systems
In recent years, the demand for excavations and fills of significant height has increased due to many factors, including requirements for below-grade parking for urban buildings and the need to construct...

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...

Geotechnical Aspects of Pavements: There's More to Roads than Asphalt and Concrete!
When you jump on the highway to make that commute to work, do you think much about what's under the surface you ride on? Pavements are layered systems designed to provide a strong structure to support...

Performance-Based Earthquake Engineering: What Can It Do for You?
There's been a lot of talk, and some confusion, lately about performance-based earthquake engineering (PBEE). Many geotechnical engineers wonder -- what is it, how does it differ from what I've been doing,...

The 2010-2011 Canterbury, New Zealand, Earthquake Sequence: Impetus for Rethinking the Way We Evaluate and Mitigate Liquefaction
Liquefaction is a common cause of ground failure during earthquakes and is directly responsible for tremendous damage to infrastructure. Evidence of the impact of liquefaction includes failure of bridge...

You Designed It for the Big One, Right? Illustrating and Communicating Uncertainty in a Deterministic Seismic Hazard Analysis
In seismic regions of the U.S. and worldwide, engineers design structures to withstand seismic ground motions resulting from a large, rare earthquake. But definitions of "large" and "rare" depend on who...

 

 

 

 

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