Laserfiche WebLink
<br />Memo to <br />Bowie No <br />page 7 <br />Page 28 <br />Dave Berry <br />2 Geotech Study <br />I concur with the details provided for construction of structural floor <br />underdrains. However, I would specify the installation of an impervious <br />uppermost horizon, at least 12 inches thick, to cap the drain and prevent <br />surface moisture infiltration directly into the underdrain. <br />Page 31 <br />Maxim Technologies recommends, as an alternative to the importation of <br />24 inches of competent, non-expansive granular material, the lime <br />treatment of subgrade clay soils and the placement of soil-cemented road <br />base. I am concerned about the permanence of this treatment methodology <br />if not covered with a relatively impermeable asphaltic pavement. Will the <br />infiltration of moisture into the gravel road section eventually leach the <br />lime and degrade the effectiveness of the treatment of the clay subgrade? <br />cc: Susan McCannon <br />Doc: C:\WP51 \COAL\Bow2GeoT.Rpt <br />JP/JP <br />