No Need to Dig-and-Replace   Water & Wastes Digest July 2008   By Charlie Bosworth
Trenchless technology helps repair Utah water line

Crawling Toward a Better Pipe Inspection   Water & Wastes Digest July 2008   By Richard Lindner & Mark Burcham
Choosing the right crawler by matching size with need

Beyond Metal   Water & Wastes Digest July 2008   By Domenic DeCaria
Implementing CPVC pipe to curtail corrosion in water treatment plants

Pipe a Winner Right Out of the Gate   Water & Wastes Digest May 2007   By Kimberly Paggioli
Fighting pipe corrosion to preserve a historic racetrack

A Mix of Old & New   Water & Wastes Digest October 2006   Ben R. Bogner
An ingenious combination of old concrete and new fiber-reinforced polymer (FRP) composite saved precious time while preventing a potentially serious wastewater problem in metropolitan Denver.

PVC Pipe Facilitates Water Distribution System   Water & Wastes Digest August 2006   By David E. Beck
PVC pressure pipe plays cost-saving role in Mojave River project

Simple Solution Finally Found   Water & Wastes Digest May 2006   By Justin Adelson
Reducing hydrogen sulfide and sulfuric acid levels in forced main

Pipe Flexible for Various Applications   Water & Wastes Digest August 2005   By Tanya Rouce
Working on a tight timeline, contractors finished the work between January and June 2004. It is the largest such project completed by Artesian Water to date.

Fixing the Plumbing   Storm Water Solutions July 2005
The expansive properties inherent with polymer provides a non-disruptive, cost-effective and long-lasting solution for lifting sunken highways, roads and runways and misaligned bridge approaches or departure slabs.

What is Coming Down the Pipe?   Water & Wastes Digest September 2004   By Alec Mackie
Addison, Ill., incorporates new technology to clean up tons of wastewater screenings before sending it to a local transfer station.

That Sinking Feeling   Water & Wastes Digest August 2004   By Kimberly Paggioli, PE
The pipes used for sliplining to repair the sewer line under Almeda Road in Houston have gasket-sealed joints that can provide leak-free service and prevent future infiltration.

In the Wake of the Flood   Water & Wastes Digest August 2004   By Ralph J. Davila
Cuyahoga Falls, a city of 50,000 and one of the most severely impacted areas in northeast Ohio, was declared a federal disaster zone…

Ending Odor Complaints   Water & Wastes Digest May 2004
A long-running odor problem was solved by tapping a 30,000-cfm-capacity biofilter array into a 14 mgd average, 55 mgd maximum sewage transfer line. The line discharges into underground junction box, with the odor control system’s main collection duct evacuating box headspace air above ground for humidification and biofiltration before discharge to atmosphere through fan stacks.

Firefighting in America   Water Engineering & Management March 2003   Bill Swichtenberg
Fire departments are a relatively recent development. The first paid fire department was created in Cincinnati in 1853 (also the first year of WEM).
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Bringing Home the Bacon   Water Engineering & Management February 2003
Moving water may be an ancient practice, but that did not keep bright engineering minds from developing a more efficient way to do it. Balancing an aggressive, stormwater pipeline design concept with a conservative approach to prove its performance, the result was a new engineered stormwater system. A new, more economical system design justified discarding the old plans and redrawing them with HDPE pipe.
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Anchors Aweigh - Part 2   Water Engineering & Management February 2003   Allister W. Thompson
Part 1 of this article discussed the amount of ballast weight needed to submerge a pipe and detailed the traditional method of installing an underwater pipeline.
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Anchors Aweigh - Part 1   Water Engineering & Management January 2003   Allister W. Thompson
Many pipelines installed underwater are manufactured from synthetic materials such as high-density polyethylene (HDPE) because of the superior corrosion resistance and, in certain applications, the superior wear resistance of synthetics over iron alloys. Synthetic pipelines are used in many tasks for both industrial and municipal applications. As the depths of the installations and the lengths of the synthetic pipelines are increasing, better methods of installations must be developed.
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Revisiting the Selection of Stainless Steel in Water and Wastewater Treatment Environments: Part 3   Water Engineering & Management July 2002   Frederick Bloetscher, Richard J. Bullock, Robert E. Fergen, Gerhardt M. Witt, and Gary D. Fries
Based on the City of Hollywood’s experience, the use of 316L stainless steel should be evaluated carefully due to the potential for problems in the erection and construction of water treatment facilities that will be in contact with high chloride water and/or other corrosive chemistries. As with many membrane facilities, much of the stainless steel is exposed (not buried), which subjected it to atmospheric as well as water quality problems. Therefore, unless the quality control of the raw and reject water (chemical, physical and microbial) can be assured, 316L stainless steel may not be the appropriate material for engineers to specify.
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Revisiting the Selection of Stainless Steel in Water and Wastewater Treatment Environments: Part 2   Water Engineering & Management June 2002   Frederick Bloetscher, Richard Bullock, Robert Fergen, Gerhardt Witt, & Gary Fries
Aerobic bacteria (Crenothrix, Gallionella) primarily are encountered in the fresh surface waters, although anaerobic sulfate-reducing bacteria and facultative strains also are encountered. Ground waters are more likely to contain anaerobic and facultative bacteria, as well as Gallionella than surface waters.3 Sulfate-reducing bacteria also are found in seawater.3
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Revisiting the Selection of Stainless Steel in Water and Wastewater Treatment Environments: Part 1   Water Engineering & Management May 2002   Frederick Bloetscher, Richard Bullock, Robert Fergen, Gerhardt Witt, and Gary Fries
Metals such as bronze, copper and iron have been used for thousands of years by man for both peaceful and non-peaceful purposes. One of the most useful purposes for metal is the production of steel.
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Novel Approach to Pipeline Weighting Reduces Buoyancy, Cost and Materials   Water Engineering & Management April 2002   James C. McGill
Clearly, the pipeline construction industry has identified benefits of the filled membrane over traditional concrete weights.
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Open Trench Failures Continue to Rise   Water Engineering & Management March 2002   Del Williams
Despite the fact that hundreds of people are killed and severely injured in open-trenching accidents throughout the United States every year, most municipalities continue to award construction contracts to companies utilizing open-trench methods, when safer trenchless technology is available to them.
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Infrastructure Relocation for a Growing Urban Community: Juggling Schedules and Methods   Water Engineering & Management March 2002
In the last decade, municipal leaders of medium-sized cities across the United States have rediscovered downtown urban centers. Economic development initiatives and long-term growth once again focus on these areas. As plans for revitalizing downtown neighborhoods begin to take shape, local governments are finding that existing infrastructures are inadequate to support the utility needs of incoming commercial and residential tenants. As a result, the need for infrastructure rehabilitation and utility service expansion is in high demand.
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Oklahoma Ranch Installs PE Sewer System for Cub Scout Camp   Water & Wastes Digest March 2002   Drew Wilson
A Cub Scout camp located in the heart of one of Oklahoma’s largest ranches is expanding its facilities and recently installed a new polyethylene (PE) sewer line

Plastic Pipes Handle Pressure from RO Plant   Water Quality Products January 2002   Submitted by the Plastics Pipe Institute
The El Paso County Water Authority was in need of a cost-effective pipe for its reverse osmosis treatment project to supply clean water. A competitive price won the attention of a Texas engineering firm to high density polythylene (HDPE) pipe. HDPE?s performance won some loyalty.
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Sewer Outfall Replacement Relies on Piers   Water Engineering & Management January 2002   Steven Law
Faced with chronic sewer backups, one town tried geopiers.
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Plastic Pipe Used in RO Project Provides Residents with Clean Water   Water Engineering & Management November 2001
A competitive price won the attention of a Texas engineering firm to high density polyethylene (HDPE) pipe. However, good performance won its loyalty.
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Orbital Welding Meets the Deadline   Water Engineering & Management September 2001
Switching from conventional stick welding to orbital welding helped a piping project meet its deadlines after an increase in scope.
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Pipeline Rehab Survives the Elements   Water Engineering & Management August 2001
Projects rarely are easy. However, throw in a remote site, steep siphon, a limited number of access points, harsh winter conditions and environmental concerns and you have a daunting project.
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Polyethylene Pipe Chosen for Delicate Northwest Estuary/Aquarium   Water & Wastes Digest July 2001
Two plants separated by Oregon's Yaquina Bay needed to be connected with two separate pipelines: one line to bring raw sewage to the new plant and one line to carry the finished refuse back to the old plant.
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Company Produces Pipeline in Record Time   Water Engineering & Management July 2001
On March 9, 2000, a 27*-diameter petroleum pipeline ruptured near Caddo Creek in East Texas. This creek is a source of water for Lake Tawakoni, a major water supply for Dallas Water Utilities and nine other water suppliers in Texas. Some 600,000 gallons of reformulated gasoline were spilled into the creek.
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Controlling Scale Deposition and Industrial Fouling   Water Engineering & Management July 2001   Jan de Baat Doelman
Mineral scale deposition cannot only put plant and product integrity at risk but also compromise the health and safety of personnel. Luckily, there are a number of ways to control fouling and restore operational efficiency.
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Self-performed Dewatering Enhances California Sewer Line Project   Water & Wastes Digest April 2001
After years of relying on specialty subcontractors to dewater their deep ditch projects, Jaeger Construction, Inc. self-performed the work on the North Davis Sanitary Sewer Trunkline Project for the city of Salinas, California.
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Insertable Electromagnetic Flowmeter Solves Difficult Piping Problem   Water & Wastes Digest April 2001
A difficult piping arrangement that included limited distance between the metering site and pipe fittings posed a dilemma for the engineering staff at a city of Frederick, Maryland, raw water pumping station.
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Fire and Flooding in Los Alamos: Pipe Ramming Provides a Solution   Water Engineering & Management March 2001   Jim Schill
The Cerro Grande fire ravaged the Los Alamos, N.M., landscape in May of 2000. In addition to threatening the world famous Los Alamos National Laboratory, the firestorm consumed more than 47,650 acres of forest and left more than 400 families homeless. However, almost as soon as the fire was contained a new threat arose: flooding.
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Old Water Line Meets New Technology   Water Engineering & Management March 2001   Tom Gigliotti
The City of Pittsburgh is in the process of a renaissance. Builders must raze the old to make way for the new. In the spring of 1997, the City of Pittsburgh imploded an old building in the center of the downtown shopping district and built the new Lazarus department store. The store’s main entrance is located on 5th Avenue, Pittsburgh’s main retail street. Oliver Avenue, the street adjacent to the new building, is the location of the main water line feeding the new building as well as several adjoining structures.

Pipe Installed Under LAX Runways, Terminals with No Service Disruptions   Water & Wastes Digest March 2001   WWD Staff
The challenge was to rehabilitate a 2.5 mile sewer running under one of the busiest airports in the world without interrupting flight operations or vehicular traffic. The site was Los Angeles International Airport (LAX).
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Carrier Pipe Installed In Minimal Time Using Casing Spacers   Water & Wastes Digest March 2001   WWD Staff
A recent addition to the Medina County Sanitary pipe grid included placing close to 300 feet of cased pipe under a Cleveland suburb. Project managers sought a means to do the job in minimal installation time.
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Reconsideration of Hydrostatic Leakage Allowance Provided in AWWA C-600 Standard   Water Engineering & Management November 2000   H. Steven Kanofsky and John Kasprzak
A sanitary commission conducts tests that show that there is no reason why the maximum leakage allowance shouldn't be reduced by half.

Shake, Rattle & Roll: Pipe Bursting Provides Seismic Upgrade Solution in California   Water Engineering & Management October 2000   Jim Schill
One water district recently utilized pneumatic pipe bursting to help complete a seismic upgrade and retrofit one of its key water mains.

Pumps Give Stormwater the Shaft   Water Engineering & Management October 2000
As part of an extensive scheme to further improve bathing water standards in the Brighton and Hove (England) area, a project for the diversion of stormwater is now in full operation.

Philadelphia Sewer Replacement A Work of Art   Water & Wastes Digest September 2000
Facing a task that might have daunted even Rocky, engineers from Philadelphia’s Water Department needed to replace the deteriorating Central Schuylkill east side intercepting sewer line running beneath the city’s famed Art Museum. They decided to install a parallel sewer line and use the existing sewer as an overflow line.

Seattle “Pigs” Eccentrics on Municipal Sludge Lines, Increases Pipeline Efficiency   Water & Wastes Digest September 2000
Municipal sludge lines tend to become increasingly clogged, reducing the pipelines capacity and flow rates, sometimes substantially. Those familiar with wastewater applications know that one of the most economical means of restoring capacity and flow rates is to "pig" the lines.

Dairy Farmers Having Success Piping Animal Waste to Lagoons   Water Engineering & Management August 2000
Two dairy farmers have found similar success using animal waste lagoons to protect groundwater and cut overhead. For one of these farmers, recycling the herd’s waste has even led to another farm-based business.

Pipe Used in Rehab of County Sewer Inceptions   Water Engineering & Management July 2000
For ten years, Hobas Pipe USA and the Los Angeles County Sanitation District (LACSD) have united to renew many of the County's 21 to 108-inch sewer interceptors.

Record-setting 102-inch Hot Taps Set in Las Vegas   Water & Wastes Digest July 2000
TDW Services, Inc., of Tulsa, Oklahoma, set a record for hot tapping this past December, cutting two 96-inch holes in a 120-inch line supplying water from Lake Mead, Nevada, to a treatment plant.

Concrete Pipe Reduces Strain on Austin’s Water Supply   Water Engineering & Management June 2000
Since 1845 when it became the capital of the state of Texas, the City of Austin’s primary focus was on government. However, in the late 1970s, the character and employment pattern of the city began to change.

Lickety-Split: A Fast-Track Trenchless Solution   Water Engineering & Management April 2000
Location can mean everything when it comes to the pipeline installation business. For example, the offices and main pumping station for the Leucadia County Water District in Southern California are located four miles east of the Pacific Ocean.

Irrigation Pipeline Installed Over 14 Miles of Rough, Hilly Terrain   Water & Wastes Digest March 2000

Analyzing Underground Water-Pipe Breaks In Residual Soils   Water Engineering & Management December 1998   Paul F. Hudak, Barry Sadler and Bruce A. Hunter
This study evaluates water pipe breaks caused by one of the world's most costly hazards: expansive soils.

Continuous Monitoring Saves City from Building a New Plant   Water Engineering & Management July 1998

Los Vaqueros Project: Blending Consistent Water Quality and Reliability with Concern For Environment   Water Engineering & Management July 1998   Bruce Ross
This $450 million project put environmental concerns on equal footing with technical and financial considerations in the planning process.

GA Optimization Applied to Las Vegas Distribution System   Water Engineering & Management February 1998

Cooling Water Piping Project Provides Cost Effective Alternative to Stainless Steel   Water & Wastes Digest January 1998

Pipe with Sleeve Coupler Installed Under an Ohio Haul Road   Water & Wastes Digest January 1998

Sliplining Meets Needs of Miami-Dade   Water & Wastes Digest November 1997

Old Redwood Distribution Line Continues On with Rehabilitation   Water Engineering & Management October 1997   Edward H. Russell
When major repairs of an old wooden distribution line became necessary, a polyethylene sliplining installation was the best option.

Microbiological Corrosion in Municipal Water Treatment Plant Piping   Water Engineering & Management May 1997   Helmut Thielsch and Susan Freeman
Municipal water treatment plant experiences pipe deterioration caused by microbes and bacteria.

Air in Pipelines: Sources, System Impact, Removal by Air Valves   Water & Wastes Digest March 1997   By Phillip O. Landon
When air is allowed to accumulate in pressurized pipelines, efficiency is sacrificed and serious damage can occur. Air valves are a cost effective, reliable method of improving efficiency and solving air-related surge problems.

Inadequate Fire Protection Leads NASA Center to Implement Repair Program   Water Engineering & Management January 1997   David J. Braidich and Robert M. Puzak
A two-system setup worked well in the 1940s, but a modern, unified network has taken its place.

Indianapolis Water Company Goes to School   Water Engineering & Management March 1996
AWWA-approved, high density polyethylene piping material provided a solution to a school waterline extension.

Corrosion Control: Begin with pH Adjustment   Water Engineering & Management January 1996   Robert A. Leitch, P.E.
While many corrosion control options exist, increasing the pH of the groundwater to a non-acidic level reduces the corrosive nature.

Pipe Expansion Project Quickly Increases Production Capacity   Water Engineering & Management October 1995   Bill Swichtenberg
A project to install over 41,000 linear feet of 60-in. pipe increaseda Michigan water plant's pumping rate.

Research Needs for Water Distribution System Rehabilitation   Water Engineering & Management August 1994   Dr. Ahmad Habibian
Important factors that have to be considered before water distribution system mains can or should be repaired, rehabilitated or replaced are discussed.