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DETAILS <br />N.T.S. <br />+12" - <br />2 *.....-Native Backfill <br />Provide Surface Drainage <br />Q>-- Slope or Level <br />H/2 . <br />v min. <br />244 <br />27© Waterproofing I ./11 <br /> Membrane (optional) l_] <br />1 or Flatter <br />@ Weep Hole -9 - : 1 J¢ N N694, - r e Filter Fabric <br />® Clean <br />Sand Backfill <br />Finished Surface <br />*1...6?:%% <br />Heel Width c <br /> WATERPROOFING MEMBRANE (optional): <br />Liquid boot or approved equivalent. <br />® CLEAN SAND BACKFILL: <br />Must have sand equivalent value of 30 or greater; can be densified by water jetting. <br /> FILTER FABRIC: <br />MIrafi 140N or approved equivalent. <br />@ ROCK: <br />1 cubic foot per linear feet of pipe or 3/4 to 1-1/2" (inches) rock. <br />qD PIPE: <br />4" (inches) diameter perforated PVC. schedule 40 or approved alternative with minimum of <br />1% gradient to proper outlet point (Perforations down). <br /> WEEP HOLE: <br />Minimum 2" (inches) diameter placed at 20' (feet) on centers along the wall, and 3" (inches) <br />above finished surface. (No weep holes for basement walls.) <br />RETAINING WALL AND SUBDRAIN DETAIL <br />CLEAN SAND BACKFILL <br />DETAIL 3 <br />Geotechnical • Coastal o Geologic . Environmental <br />I