Beneath Biscayne Bay
To improve the reliability and resiliency of one of its most critical wastewater components, the Miami-Dade Water and Sewer Department replaced more than a mile of aging force main used to convey flows...

A Boost for Butte
The first gravity-powered municipal treatment facility featuring ceramic membranes in the United States, the Basin Creek Water Treatment Plant in Butte, Montana, uses innovative approaches to minimize...

Austin Green
A former brownfield site in Austin, Texas, has been converted into a mixed-use, sustainable neighborhood—known as an EcoDistrict—that focuses on renewable and innovative energy systems, water conservation...

Infrastructure Solutions: For Dams, Safety Comes First
Because the bulk of dams in the United States were built before this century, they are particularly plagued by aging infrastructure. Over the generations, the goal of those working on dams has moved from...

Maclay Highline Makeover
Looking to accommodate excess flows from the Los Angeles Aqueduct, the Los Angeles Department of Water and Power turned to the Maclay Highline, a dormant system once used to convey water from the aqueduct...

Pipeline Protection
To improve the seismic reliability of three critical pipelines, California’s Santa Clara Valley Water District installed what is believed to be the first large-diameter earthquake-resistant ductile iron...

Raising Gatun Lake (part of "A Greater Wonder")
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...

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...

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...

Appraisal of Lightweight Moorings for Deep Water
This paper outlines the potential advantages of using lightweight fiber ropes for mooring floating production platforms. The influence of tether properties on mooring system response is discussed. It is...

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...

Wider and Deeper (part of "A Greater Wonder")
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...

When Things Became Muddy: TVA's Response to Seepage Discharge at Boone Dam
In October 2014, the Tennessee Valley Authority (TVA) profited from investments in a robust dam safety program. This profit did not come in the form of money, but more importantly in the protection of...

Testing the New Locks (part of "A Greater Wonder")
The recently completed third set of locks at the Panama Canal incorporates several civil components and hydraulic design features that are intended to reduce routine maintenance and conserve water. For...

Tailings Impoundment Closure: It's All in the Eye of the Beholder
Since the early 1900s, the mining and power-generation industries have disposed of tailings and other waste products using impoundments. The term "tailings" typically refers to the fine-grained waste product...

Cracking the Nuclear Code: Finding an Alternative to the Nuclear Density Gauge
Two of the most basic quality control tests made in the field during soil construction are the soil’s moisture content and density. The establishment of a uniform procedure to compare the performance of...

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...

Improving Cost and Schedule Performance on Municipal Pipeline Projects: Realizing the Benefits of the Construction Manager at Risk (CMAR) Alternative Project Delivery Method
The water and wastewater infrastructure in the United States is failing. In its 2013 Report Card on American Infrastructure, ASCE stated: "The water and wastewater...

Design Considerations Common To All Permeable Pavements
Impervious cover in watersheds without controls result in increased stormwater runoff and decreased groundwater recharge in response to rainfall events. This increased runoff can be the...

Evaluating Bridges With Unknown Foundations for Susceptibility to Scour: North Carolina Applies Risk-Based Guidelines to Over 3,750 Bridges
Scour occurs when flowing water removes erodible material such as sand and rock. For bridges over water, scour affects the stability of pier and abutment foundations and contributes to...

 

 

 

 

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