Stormwater Management, Inflow and Infiltration Prevention

Stormwater Management, Inflow and Infiltration Prevention
Grate risers speed along median work

Grate risers speed along median work

Problem: Curtis Contracting was hired to rehabilitate 250 large median inlet grates (20- by 30-inch and 30- by 30-inch, with grates weighing 80 to 90 and 150 pounds) in Virginia. The rehabilitation featured multiple asphalt lifts totaling up to 6.5 inches of new pavement. Since federal and state highway safety specifications called for no more than a 2-inch differential between pavement and other surfaces at any time, CCI was looking...

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