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18" Min. <br /> o 0 0 o O o o <br /> 0 <br /> °o o o-o��° �o �0°00 o B <br /> 00 o °0 0 000 °o <br /> 0 <br /> 0 0 0 0 0 0�0 00 .o o <br /> 0 <br /> 0 0 0 oao o0 0oo 80 <br /> o° ° o o 0 o <br /> o O o O o o <br /> ° 00 o -0 000 0 0 <br /> 0 0 o O o ° o o o <br /> 0 0 000 00°0 o <br /> oo oo° o 00 �o 06 o <br /> 00 0 o 0 ° Oo o o oo 0 <br /> oo Structural <br /> 00 <br /> Fill <br /> 0. 00000000° oo6o <br /> o o o 000 'oo o <br /> oo <br /> o 0 0o o 9 ' <br /> °000. <br /> o o ° o <br /> oo o ° o o o <br /> o <br /> oo ° o 0 0o 0 o ° d9 o 0 <br /> 0 6 o 0 O000 o 0o O <br /> o o 0 o ° r.f. o <br /> •L•L•L•L <br /> .f.f.f.f.f <br /> L•L•L•L•L• <br /> .f.f .f <br /> L•L L• <br /> •f t <br /> L• <br /> Perforated e Rigid Drain Pipe <br /> p <br /> NOTES: (Surround in Drain Rock) <br /> • Free-draining Backfill should consist <br /> of soil having less than 5 percent fines. <br /> Percent passing No. 4 sieve should be <br /> 25 to 75 percent. <br /> • Sheet Drain may be feasible in lieu SCHEMATIC ONLY- NOT TO SCALE <br /> of Free-draining Backfill, per ESNW NOT CONSTRUCTION DRAWING <br /> recommendations. <br /> • Drain Pipe should consist of perforated, <br /> rigid PVC Pipe surrounded with 1-inch <br /> Drain Rock. <br /> LEGEND: <br /> E <br /> °000 oWLLc ti Solutiions <br /> 1 1 <br /> 0 o0 o Free-draining Structural BackfillNWLLC � __ <br /> 0 <br /> Observation/Testing a . Environmental Services <br /> .r.f.r.r. <br /> L•L•L•L <br /> '��rti:tirti 1-inch Drain Rock Retaining Wall Drainage Detail <br /> Four Corners <br /> Everett, Washington <br /> Drwn. MRS Date 02/15/2019 Proj. No. 6516 <br /> Checked CGH Date Feb. 2019 Plate 3 <br />