United States Department of Transportation
i
Evaluation of Trench and Slotted Drain Maintenance and Cleaning – Phase 2
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2018-11-01
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[PDF-5.26 MB]
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Edition:Final Report
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Abstract:Trench and slotted drains are increasingly being used by ODOT to remove storm water from the roadways. These drains have to be properly cleaned and maintained to efficiently remove storm water from the roadway to prevent vehicles from hydroplaning, and to eliminate flooding. ODOT’s current procedure for cleaning/maintaining trench and slotted drains are not safe in many situations as they both require ODOT highway technicians to walk along the drain during cleaning and thus expose them to heavy traffic. The research evaluated ‘new’ methods for cleaning trench drains that are safer and more efficient and recommends using horizontal auger boring (HAB) equipment for cleaning drains. Other cleaning methods evaluated included the use of specialized sewer cleaning nozzles and the use of a drain cleaning robot developed as part of the project.
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