Officials plan to hire a contractor to install plastic liners inside corrugated metal storm sewer pipes
To combat flooding in the Random Hill subdivision of Hamilton, Ohio, the city intends to hire a company to install plastic linings inside corrugated metal sewer pipes.
Homes in the Random Hill subdivision were built in the 1990s, and flooding problems have since been an issue. This plan of placing plastic lining in sewer pipes is predicted to significantly improve the flow capacity of storm water within them, according to officials per the Journal-News.
Hamilton Director of Engineering Rich Engle said to The Journal-News the project should begin in about six weeks. However, how much time the project will take to complete is unclear as it depends on weather conditions.
The subdivision, which is located in the northern part of the city’s Washington neighborhood, experienced flooding in 2017 after heavy storms, the Journal-News said. However, flooding had been an issue before that. Engle said the flooding is caused by multiple factors, including the area’s topography and storm sewer pipes not being built at sufficient sizes.
Right now, two drainage ditches enter the area near Beissinger Road in the township. The city spoke with two property owners in the township in hopes of buying land to install detention basins and reduce the amount of flow entering the system, but Engle told the council they were unable to do so, according to the Journal-News.
The city is working to hire a contractor to install the plastic liners inside the corrugated metal storm sewer pipes in hopes that they can increase the pipe’s flow capacity, according to The News-Journal. The liners will fit inside the existing pipes, which were undersized, but they will make them more effective in draining rain water from the area, the Journal-News reported.
This should happen because corrugated pipes have ruffles inside them that slow the flow of water, and the plastic linings will be smooth. The plastic linings will permit water to flow through pipes 30% more effectively, according to the Journal-News.
“The corrugations, if you think about it, do not allow the free flow of water,” Engle told the Journal-News. “So it acts with higher friction factor. When you have a smooth wall pipe, the water flows easier and more smoothly through the pipe.”
He added that through computer modeling, he thinks the plastic linings will be successful.
“It’s going to reduce our street flooding substantially, down to just a few inches, rather than feet.”
Similarly, Hamilton is in the midst of completing its first storm water master plan, which will provide a proactive method approach to prioritizing storm sewer projects and identify problem areas, and in addition, bring the city into compliance with U.S. and Ohio Environmental Protection Agencies’ regulations, according to the Journal-News.
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