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Partial street replacement and hydrology
bill93 replied 2 years, 5 months ago 10 Members · 23 Replies
ABC ????
When I worked a stint in engineering, the firm I worked for was the Township Engineer for one of the famous Levitt towns. Levitt built complete towns with 10s of thousands of single family homes up and down the east coast and I was responsible for the Engineering projects in a town called Willingboro.
We had a 10 year plan to resurface roughly 115 miles of residential roadways, many of them, like yours, were stone on top of clay, capped with 6″ of concrete and a 1″ overlay of asphalt. Ground water was always an issue and there were roads, that, even during an extended dry spell, would weep water through the stress cracks in the concrete and pavement cracks and joints.
The best solution to that was to install underdrains. I would speck a 6″ perforated ADS or PVC pipe, burried 4′ deep in a filter fabric lined trench with stone fill up to 6″ below the top of curb. close the fabric over the top and backfill with topsoil to grow grass on. The inderdrains ran from inlet to inlet and solved the water issues at the road subbase level by lowering the water table. Even during a drought, you could still see the underdrains trickling water into the inlets.
We used that method on the road my mother lives on in the same town, it’s been over 15 years now and the road is still as dry as a bone with the thin surface course asphalt holding up well for it’s age.
I’m curious to know where your sump pump discharges to. Are you discharging to the road?
The sump pump discharge is in the lawn well inside the sidewalk. There used to be one across the street that discharged at the curb, but I believe it now is in their lawn.
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