The Case for Cleaning
When sanitary sewer systems overflow during heavy rainstorms, the crisis is often attributed to the sheer volume of water inundating the system. In many cases, however, the lines would...
Wetlands at Work
As urbanization spread to the southern portion of Staten Island�the home of New York City's last large stand of freshwater wetlands�the New York City Department of Environmental...
San Diego Delivers
To maintain its ability to provide water to some of its rapidly growing regions, the city of San Diego is simultaneously laying two large diameter pipelines, one carrying potable water...
Shell of Steel
To create a saddle-shaped bandstand in a newly developed park in St. Paul, Minnesota, engineers designed a glass-covered, stainless steel lattice grid that makes use of a unique system...
CMOM in Fairfax County, Virginia
Geotechnical Engineering: Pneumatic Capsule Pipeline Removes Soil Vertically
ASCE Calls for Comments on Standard for Buried Concrete Pipes
Deep Freeze
In engineering, overcoming a failure can sometimes be more instructive than completing a project with unqualified success. Such was the case with the collapse and repair of a force main...
Establishing Baselines For Pipeline Condition Master Planning
As our most of our cities approach complete built-out and much of our wastewater pipelines near the end of their design life, attention needs to be focused on retiring deteriorated first...
Quality Control Test for Prestressing Wires in Concrete Pressure Pipe
Prestressed concrete cylinder pipe (PCCP) was introduced in 1942 as a high pressure capacity conduit for water transmission. The principal element of the design and construction that imparts...
Multifaceted Trenchless Rehabilitation at the Middletown, Ohio WWTP
This paper describes the multiple trenchless technologies that were evaluated and the ones that were applied to the rehabilitation of a 78la diameter corrugated metal influent line and...
Non-Destructive Excavating Around Pipelines and Challenging Conditions
Hydrovac technology provides engineers and contractors with a unique solution for non-destructive excavating around sensitive buried lines. As a non-mechanical excavating method, it is...
Use of New Liner In Water Distribution System
For years there has been interest in rehabilitation of water distribution systems to provide quality drinking water and to reduce breaks in the water system service. Much work has been...
Installation of Fiber Optic Cables in Sewers Using a CIPP Process
Although using sewers as an avenue for the installation of Fiber Optic Cabling is a relatively new concept, there have been several major technological advances in the installation process...
Asphalt Liner Prevents Landfill Leaks
Ultimate Bearing Capacity of Small Diameter Steel Pipe Piles
Researchers Develop Remote Diagnostic Systems for Pipes
HDPE Pipe Withstands Deep Installation
The Pentagon Project
The renovation of the Pentagon, now under way, is one of the most ambitious, complex, and challenging construction undertakings in contemporary history. It entails the equivalent of demolishing...
Liner Lessons
The County Sanitation Districts of Los Angeles County comprise 25 independent special districts that cover a service area of approximately 770 sq mi (1,990 km�). Since the early 1990s...
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