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FRONT VIEW <br />CONCRETE6" Min. <br />4. <br />CUT-OFF WALL <br />SUBDRAIN PIPE ; _ "' 6" Min. <br />24" Min. <br />6" Min. <br />SIDE VIEW <br />—1 12" Min. 6" Min. <br />CONCRETE <br />CUT-OFF WALL �' �' 6" Min. <br />>- -- <br />SOILD SUBDRAIN PIPE ° ' b ° PERFORATED SUBDRAIN PIPE <br />NOT TO SCALE <br />RECOMMENDED SUBDRAIN CUT-OFF WALL <br />I STANDARD SPECIFICATIONS FOR GRADING I <br />Page 16 of 26 <br />