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Jenifer Bates, P.E., M.ASCE


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RE: Granular subbase drainage

Posted By Jenifer Bates 10-24-2017 08:34 AM
Found In Egroup: Horizontal/Subsurface Infrastructure & Transportation \ view thread
​Do you use a subdrain under the granular subbase to drain the pavement? Any time we have a drainable base under our pavement, we use a perforated subdrain in a trench with porous backfill to give the water a place to get out from under the pavement. Otherwise you are just collecting the water under ...