PERMEABLE BASE DESIGN AND CONSTRUCTION

This paper will present the state-of-the-practice in pavement drainage (i.e.. permeable bases) for new or reconstructed asphalt concrete (AC) and Portland cement concrete (PCC) pavements. Rather than using impermeable dense-graded materials many States have gone to using open­ graded or "permeable" bases to all ow infiltrated moisture to rapidly drain through the base and out from beneath the pavement structure. Because of the relative unfamiliarity with permeable base pavement structures and with the varying designs in use, this paper synthesizes permeable base pavement systems being used in this country.