Two Iowa underground construction contractors have teamed to establish a field tiling operation that has adapted global positioning system (GPS) technology to control grade of drainage “tile” they install in state corn and soybean cropland.
The West Side Interceptor sewer replacement project in Portland, ME, utilized a 60-inch diameter, high performance polypropylene pipe to increase conveyance capacity, replacing a smaller 100-year old vitrified clay line and separating a parallel 10-foot diameter combined sewer, which now solely conveys storm water.
After several years of the Great Recession, America’s underground infrastructure – already stretched thin before the economic crash – is rapidly approaching crisis levels, say city respondents to the 15th Annual Underground Construction Municipal Sewer & Water Survey. However, a majority of the survey participants believe that their city’s financial woes bottomed out in 2011 and anticipate the beginning of a slow turnaround late in 2012.
Earlier this year, the Indiana Department of Transportation (INDOT) used spiral wound pipe liner to rehabilitate two failing culverts beneath Interstate Highway 64 (I-64) near Evansville in the southwest corner of the state. It was the first time this product and installation process has been used by INDOT.
Even the most highly visible public works projects depend on improvements to and protection of the invisible underground infrastructure. That’s what keeps Goliath Hydro-Vac Inc. busy. The 10-year-old contracting firm based in Jordan, MN, uses a fleet of hydro-excavating trucks from Vactor Manufacturing to tackle a variety of construction and remediation projects that require special attention to existing underground infrastructure.
If Ronald Cline was the type to back away from a challenge, it’s entirely possible that a natural gas gathering line, now securely in place in central Arkansas, would likely not have been installed underground. But this conscientious and ingenious native Razorback devised a trenchless approach that resulted in the successful completion of a continuous bore amid some of Arkansas’ most treacherous terrain, and through some of the state’s toughest and trickiest rock.