Columbus, Ohio, is an up-and-coming city in the Midwest. Unlike many cities in the so-called…
At the beginning of the Civil War, Union soldiers occupied Arlington, Va., realizing that the…
The project is an expansion of Spectra Energy’s Texas Eastern Transmission and Algonguin Gas Transmission pipeline systems to deliver new, critically needed natural gas supplies to the New Jersey and New York areas, including Manhattan.
Trenchless Technology Project of the Year for Rehabilitation Honorable Mentions go to Granville Gorge Water Main Replacement Using Pipe Bursting & Reading, Pa., System Capacity Upgrade with Relining.
Pipe bursting specialist No-DigTec of Dallas upsized a 43-year-old, 24-in., reinforced concrete (RC) sewer pipe for The Trinity River Authority of Texas (TRA) with the pipe bursting technique.The job was part of a larger Arlington and Fort Worth, Texas, wastewater sewer upgrade project undertaken by general contractor, Mountain Cascade.
Trenchless Technology’s Project of the Year Honorable Mentions go to Patuxent River Crossing HDD—230 kV Underground Transmission Line and Oakley Station CSO 551 and CSO 553 Separation Sewer.
The Gulf Coast Water Authority (GCWA) and the City of League City, Texas, were faced with the need to rehabilitate 6,800 ft of a 39-in. PCCP water transmission main along a relatively narrow section of roadway.The decision to complete the rehabilitation of this main — which provides an interconnect between the City of Houston and Galveston County — using Swagelining allowed planners to keep the same hydraulic model/capacity, as well as giving the pipe a full structural overhaul that extended the life expectancy to at least 100 years.
In July 2014, Garden City Park Water District (GCPWD), located in Garden City Park, N.Y., awarded a contract to GAME Consultants USA Inc. to investigate the condition of various small diameter potable water pipes in their network.
Subcontractor Super Excavators Inc. of Menomonee Falls, Wis., completed a 19-month project, which involved 11,976 lf of microtunnel work in historic Providence, R.I., in March 2014.The Woonasquatucket Interceptor complements other infrastructure improvements, assisting in the separation of sanitary and storm water flows to eliminate pollution into the Woonasquatucket River, which flows to Narragansett Bay.
Utah utility contractor Sorensen Companies Inc. (SCI) was established by Craig Sorensen in 1977 with one old backhoe and used truck to install underground telephone cable. “My father was working for Mountain Bell, and he saw the ways cable was being put in the ground,” said SCI president Chad Sorensen.
Trenchless technology, which has advanced our infrastructure and brought services such as gas, water and telecommunications to our homes, has come a long way since the early 20th century when underground drilling emerged.
While sewers are a conduit that convey water, no two cleaning projects are ever the same. Challenges may be due to the shapes and sizes of a sewer or because of the levels of debris. The debris may be light and will convey very easily or the debris could be extremely hard and compact and will require much effort to displace.
A Different Twist on Pneumatic Assist Pulls a California Contractor Through a Tough Pipebursting Job
In the East Bay, Phase 5 of the Central Contra Costa Sanitary District’s sewer rehabilitation program for summer 2014 targets thousands of feet of public sewer mains located primarily in the dry oak-dotted hills of Orinda, Calif. The project calls for replacement of 6-, 8-, and 12-in. mains by either open-cut or pipebursting methods. Some pipelines will be upsized and most run through hillside easements between large well-kept properties in this relatively exclusive area.
Thirty years ago, Bonnie Muegge formed A-B Contracting in Missouri to tackle underground service line installations for the burgeoning telecommunications industry. She had estimating experience and her brother and nephew (her first two employees) had the operating experience.
Denver and Aurora are the principal cities of the Denver Metropolitan Area in Colorado. Aurora, with a growing population of more than 300,000 residents, is home to a vibrant business environment. It includes major industries such as aerospace, military, renewable energy, high-tech, biotechnology and health care, distribution and manufacturing.
Levees form a critical part of the United States infrastructure, as past flooding has demonstrated. When a levee is breached, it causes both personal and financial hardship. With 43 percent of residents living in a county with at least one levee, their upkeep is essential.
Most HDD contractors are constantly looking to increase sales and profits. If profits can be increased without buying more equipment and hiring additional crews, it’s even better. Many contractors look outside of their normal geographical area for additional work; there is a strong demand in areas where oil well fracking in prevalent. One market segment that is seems to resurface periodically in HDD circles is the horizontal environmental well (HEW) market.
In spring and fall of 2013, multiple segments of an existing 15-in. RCP gravity sanitary sewer in the City of Montpelier, Vt., collapsed along a main commuter route in the downtown area causing a system failure. Numerous excavated point repairs were required to get the failed pipe flowing again.
In order to guarantee the supply of high-quality drinking water to residents, AWWA estimates that investments of $526 billion are required for the replacement or renovation of deteriorated water mains in the next 25 years. The latest EPA report on U.S. water infrastructure comes to the conclusion that investments of $248 billion are required over the next 20 years. President Obama just recently signed the Water Resources Reform and Development Act (WRRDA) into law to modernize the U.S. water infrastructure.
For most of its history, the trenchless pipe relining and inspection market has centered on gravity sewer pipes. That seems quite natural, considering the fact that the cured-in-place pipe (CIPP) process — the forerunner of trenchless relining — was engineered specifically for gravity sewers.