Pipe Up
The East Bay Municipal Utility District (EBMUD) provides potable water for approximately 1.2 million people in San Francisco's East Bay area and is constructing seismic upgrades...
Microtunneling under Honolulu
Highly congested urban utility corridors present some of the most difficult conditions for construction of new underground pipelines, especially when subsurface conditions are also very...
The Cover Trials
Soil erosion-control covers have been used over closed landfills for years as a means of limiting soil loss and contaminant runoff. Since 1994, the U.S. Environmental Protection Agency...
Into the Fourth Dimension
A team of contractors designed a pharmaceutical plant entirely in 3-D CAD, then linked the renderings to a cost program and scheduling software, adding a fourth dimension�time�to the process....
Guidelines for the Seismic Evaluation and Upgrade of Water Transmission Facilities
Prepared by the Technical Council on Lifeline Earthquake Engineering of ASCE This TCLEE Monograph provides guidelines for the seismic evaluation and...
Simplification of Detailed Models of Water Distribution Systems Obtained from GIS Systems
For a long time simplified models have been used to simulate the behaviour of large water distribution networks. Often, simplification has been carried out by removing small diameter pipes...
Friction Factor Choice in Hydraulic Simulation Models: Does It Matter?
(no paper) To model water distribution systems using computer hydraulic simulation, a user is required to select a form of head loss-flow relationship for each pipe in the network. The...
Under Pressure
The Arrowhead East and West contracts for the Inland Feeder water conveyance system being built in California consist of 51,500 ft (15,700 m) of tunnels that cross the San Andreas Fault...
Main Line Mending
Both the Washington Suburban Sanitary Commission (WSSC), of Laurel, Maryland, and the Providence Water Supply Board, of Rhode Island, are conducting massive, multimillion-dollar rehabilitation...
Relining a Relic
By the mid-1980s most of the Boston Low Service water supply network had been in operation for more than 100 years�with little regular maintenance. Many of the system's air...
Conquering the Cold
Three projects�a water treatment plant, an airport, and a hydroelectric plant�illustrate how practicing engineering in Alaska differs from working in the contiguous 48 states. Permafrost,...
Conquering the Mountain
Interstate 26 will be the largest and most expensive highway project ever undertaken in North Carolina. When completed in 2002, I-26 will provide safe and efficient interstate passage...
Probing Pipelines (available only in Geoenvironmental Special Issue)
Inspecting underground pipelines has become easier, more effective and less intrusive through use of sonar, radar, lasers and seismic and acoustic testing. To replace simple visual inspection,...
Salvaging Streams
A public/private partnership between engineers and local agencies restored a suburban stream in Henrico County, Va., using bioengineering. Aided greatly by a volunteer workforce, the partnership...
Getting the GISt of Costs
Over the past five years, geographic information systems (GIS) have become powerful graphical database tools, useful to everyone from city planners to departments of transportation, from...
Coldhearted Building
A 20,000-ton district cooling plant owned by the Public Service Company of Colorado was recently built to sell chilled water to customers in downtown Denver who will use it to air-condition...
Do Coated Pipes Last Longer?
Field studies have revealed that polymer coated steel pipe resists corrosion longer than pipe coated with other materials. Corrosion is the most common failure mechanism of pipe culvert,...
Pipelines in the Constructed Environment
This proceedings,
Corrosion Control
As pipe systems with nonwelded joints have become more common, so have problems with corrosion. It's up to designers to carefully consider corrosion issues in order to avoid...
Manhole Rehab
Using trenchless technology, two construction crews working on the Massachusetts Water Resources Authority's Wellesley Extension Relief Sewer project rehabilitated 83 manholes...
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