A Madison First
Tue, 11 October 2011
The Madison Water Utility, located in Wisconsin, US, has commenced a project to upgrade a water main along Droster Road on the City's east side using Trenchless Technology to avoid digging up the entire street.
The new technique will rehabilitate the existing main, which has been showing signs of deterioration, by inserting a liner through a minor excavation at one end of the main segment. This pilot project will be the first in the state to use the new trenchless method.
Residents will not have their street torn up, and water service will be only minimally interrupted while the work takes place. While the liner is being installed for the entire main between E. Buckeye Road and Starker Avenue, a temporary above-ground water system will supply drinking water.
According to Water Utility Engineer Adam Wiederhoeft, the new water main lining should last at least 50 years, and it is more cost-effective and less intrusive than traditional water main replacement methods. All the liner materials have been certified for use in drinking water systems. The project is expected to be completed in about a month.
Young Golden Valley engineer featured in Public Works Magazine
By MinnPost staff | Published Wed, Aug 31 2011 6:00 pm
MinnPost's YPN extends congratulations to Mitchell Hoeft, who was featured in the August 2011 issue of Public Works Magazine out of Chicago, Ill.
Hoeft is an engineer for the City of Golden Valley, Minn., and a member of the Economic Development Association of Minnesota Young Professionals (EDAM-YP).
Along with Paul J. Pasko III, a principal at the Minnetonka, Minn., office of Short Elliott Hendrickson, Hoeft wrote an article for Public Works about three non-adjacent cities in Minnesota signing a joint powers agreement to install one mile of an emerging rehabilitation technique.
According to the article, "budget cuts, potential push-back from recession-weary residents and site-specific variables" converged in 2010 to prompt Fridley, Golden Valley, and Hutchinson, Minn., to share a contract for installing structural cured-in-place pipe (CIPP) -- a lining system designed specifically for pressure pipes -- into one mile of trunk water main pipe in various locations.
Like structural CIPP for sewers, the trunk water main pipe application uses robotically-controlled cutting devices to restore flow to service pipes once the lining is cured and passes its pressure test. … However, few contractors have enough experience with the robots developed specifically to reinstate water service pipes.
Mitchell Hoeft
Read the full article, "Structural cured-in-place pipe for trunk water main"