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Trenchless/Underground Construction Articles
CIPP under the Baltic Sea
Trenchless International (October 2009) - Water from the Baltic Sea was leaking into the broken sewerage networks of the city of Norrk÷ping, Sweden û with expensive sewer pumps working 24 hours a day. CIPP came to the rescue.
August 19, 2009
CIPP - a cure for damaged pipes
Trenchless International (October 2009) - Cured-in-place pipe (CIPP) systems create a close-fit æpipe-within-a-pipeÆ. A variety of CIPP systems are available, the common feature being the use of a fabric tube impregnated with resin. The tube is inserted into the existing pipeline and inflated against the pipe wall, then cured most commonly at ambient temperature, by re-circulating hot water, steam or ultra-violet light.
August 17, 2009
CIPP project goes swimmingly
Trenchless International (October 2009) - A small but innovative relining project has proven the adaptability and versatility of trenchless technology to achieve a multitude of different and challenging tasks.
August 17, 2009
Canal in NY to be improved by microtunnelling
Trenchless International (August 10, 2009) - The New York City Department of Environmental Protection (NYCDEP) is proposing an upgrade to the Gowanus Facilities û using microtunnelling in a section of the project û located on the head of the Gowanus Canal in Brooklyn.
August 10, 2009
Pipe bursting û big in Japan
Trenchless International (July 2009) - While existing sewer systems in Japan have continued to function far beyond their design service life, the pipelines have deteriorated and need costly maintenance and repair. This has been a concern for Japanese sewage engineers for over 15 years, and has been a driving force for the development of alternative repairing techniques for underground infrastructure, such as lining systems or pipe bursting.
August 6, 2009
Utility rehab soars
Underground Construction (July 2009) - Over the past 15 years, the underground utility rehabilitation market has exhibited a strong pattern of growth, particularly in the sewer and storm water market.
July 28, 2009
Phoenix Water Main Undergoing Innovative Rehabilitation Methods
Underground Construction (July 2009) - When a condition assessment of an existing pre-stressed concrete cylinder pipe (PCCP) in Phoenix, AZ using electromagnetic and forensic analysis identified the need to completely rehabilitate it, innovative construction techniques were used to achieve dual objectives: employ the least possible intrusive methods while providing a long-term, rehabilitated product, keeping time and cost factors in mind.
July 28, 2009
New Boring Record Set In Louisville
Underground Construction (July 2009) - After 35 working days of excavation, Ohio contractor Turn Key Tunneling Inc. had reason to celebrate. Their trenchless crossing beneath Interstate Highway 265 in Louisville, KY, had just been completed at an unprecedented bore length of 352 feet.
July 28, 2009
Trenchless Manhole Rehabilitation in Bloomington, Ind.
Trenchless Technology (June 2009) - In Bloomington, Ind., restoring the structural integrity of an aged sanitary sewer collection system in a predominantly residential area was necessary due to inflow-and-infiltration. Insituform CIPP was used to rehabilitate 18,000 ft of 8-in. vitrified clay pipe (VCP), 1,800 ft of 10-in. VCP and 170 ft of 12-in. VCP. Because of collapse, several point repairs in the pipe were also necessary. In addition, a multi-layered polymeric system was used to restore 106 manholes. A comprehensive solution that addressed all causes of infiltration was the logical choice for Bloomington.
July 28, 2009
New Rig And Equipment Speeds Pipeline Installation
Pipeline News (July 2009) - Pro Pipe Services, Energy Contract Services and Mears Group Inc. set a high standard in safety, design and planning on a recently completed project. Contracted by Pro Pipe Services (PPS), Mears installed a 10-inch steel pipeline within the city limits of Billings, MT. The 1,635-foot line replaced an existing products line to make way for a road expansion project at Airport Road. This products line connects to a major oil refinery in Billings.
July 28, 2009
Directional Bore, Stormwater Treatment Technologies Solve Problems At Florida Lagoon
Underground Construction (June 2009) - FloridaÆs Indian River County recently utilized directional boring and water treatment technologies to rehabilitate the second most polluted section of the 154-mile-long Indian River Lagoon, which stretches along the eastern coast of Florida, from just north of New Smyrna Beach south to Fort Pierce.
June 29, 2009
Survey: 2009 A Bumpy Road But Bright Future Awaits HDD
Underground Construction (June 2009) - For the HDD industry as a whole, there seems to be reason for optimism, according to Underground Construction's annual HDD survey. The market is showing a remarkable elasticity and an upbeat û though tempered by realism û attitude towards the current economic state of affairs.
June 29, 2009
Organic ôHigh-Buildö Spray-in-Place Liners û An Emerging Class of Rehabilitation Methods
Underground Construction (June 2009) - As the water distribution infrastructure continues to deteriorate across North America, there is a continued need to develop pipeline rehabilitation methods that are cost effective and minimally disruptive, while also minimizing the time a pipe must be taken out of service. Spray-on linings that satisfy the requirements of NSF 61 are one such emerging class of rehabilitation methods for pipes and conduits subjected to internal pressure.
June 29, 2009
HDD Used to Install 1,110-m, 42-in. Gas Line in Canada
Trenchless Technology (June 1, 2009) - The intersect method was recently used to directionally drill a 1,110-m section of 42-in. gas line under the Peace River for the North Central Corridor project in northern Alberta, Canada ù a project that the HDD contractor says is the largest HDD casing install as well as longest 54-in. diameter install completed in Canada.
June 29, 2009
Trenchless Manhole Rehabilitation in Bloomington, Ind.
Trenchless Technology (June 1, 2009) - In Bloomington, Ind., restoring the structural integrity of an aged sanitary sewer collection system in a predominantly residential area was necessary due to inflow-and-infiltration. Insituform CIPP was used to rehabilitate 18,000 ft of 8-in. vitrified clay pipe (VCP), 1,800 ft of 10-in. VCP and 170 ft of 12-in. VCP. Because of collapse, several point repairs in the pipe were also necessary.
June 29, 2009
New Robotic Inspection Technology Helps to Identify a Potentially Critical Situation
Underground Construction (May 2009) - Early this year, water officials in Toronto, Ontario, Canada, became aware there were cracks in one of the city's primary large diameter sanitary sewer trunk mains that threatened the Don River watershed and homes in one neighborhood. A potentially disastrous impact on the area and its environment could develop if the aging 114-inch pipe should become blocked or collapse. The first step in determining how to address the problems was to confirm the locations and extent of damage.
May 29, 2009
Connecting East & West Under The Mississippi
Underground Construction (May 2009) - Dual river crossings connect separate water systems for St. Charles Parish in Louisiana.
May 29, 2009
Safety and productivity go hand in hand on Michigan trenching job
Grading & Excavation Contractor (May 2009) - Protecting his employees from cave-ins is critical, which is why Dan Rothenberger, owner of Rothenberger Construction Co. in Concord, MI, turned to alternative methods on a residential job to ensure that the trench walls were properly shored throughout the project.
May 28, 2009
CIPP Leaves Diverse Attractions Undisturbed
Underground Construction (April 2009) - From the downtown convention center to the scenic outskirts, Reno, NV, offers many attractions to live up to its billing as ôThe Biggest Little City In The World.ö When choosing a contractor for a sewer rehabilitation project that involved both busy downtown and more remote idyllic settings, city of Reno engineers selected cured in place pipe (CIPP) specialist PIPEnology to avoid disrupting the cityÆs activities.
April 30, 2009
Software Compares Carbon Footprint Of Trenchless, Open-Cut Construction Methods
Underground Construction (April 2009) - Vermeer Corp. has introduced a software tool for estimating the environmental impact of various underground utility construction methods. E-Calc compares construction methods and calculates the emissions that could be expected from that specific method of construction.
April 30, 2009
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