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12' MINIMUM WIDE <br />FREE —DRAINING GRAVEL <br />i <br />12T' I T <br />SLOPE TO DRAIN <br />T <br />EXCAVATED SLOPE <br />(SEE REPIATE ORT FOR <br />APPROPRINCLINATIONS) <br />COMPACTED STRUCTURAL <br />BACKFILL <br />L- 12' OVER THE PIPE <br />4' DIAMETER PVC 3' BELOW THE PIPE <br />PERFORATED PIPE <br />NOT TO SCALE <br />TERRA <br />RAGmtechnical ASSOCIATES <br />Consultonts <br />RETAINING WALL DRAINAGE DETAIL <br />MAHAN RESIDENCE <br />EVERETT, WASHINGTON <br />Proj.No. 4199 Dote NOV. 1998 Figwe 4 <br />