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AS <br />TYPICAL TRENCH COMPACTION <br />a <br />I <br />CD <br />NOTES <br />:L ALL BAC€{F ILLMATERIAL SI-I,ALL SE PLACED IN UEFTS <br />NOT TO EXCEED 121 INCHES BEFORE COMPACTION <br />UNL ESs <AUTHORIZED BY THE ENG€NEER DUE TO THE <br />CHARACTER OF THE MATERMIL AND THE <br />COMPACTING EQUIPMENT. <br />R MECHANICAL COMPACTION OF BACK E&LL MATERIAL. <br />SHALL NOT BEGIN UNTIL THE DEPTH OF COMPACTED <br />BACKFILL MATERIAL IS FEET ABOVE 'I HETOP OF <br />INPE. <br />3. EACH k IFTSHAL4 BE MECHANICALLY COMPACTED TO <br />THE RECWMED DENSITY" PPIORTO PLACING <br />SUBSEQUENT LIFTS OF BACKFILL MATERIAL. <br />4. COMPACTEO I TESTS SHALL RE AS REQUIRED BY THE <br />CITY ENGINEER, BUT IN NO CASE LESS THAN 2 TESTS <br />EVERY 200 FEET OF TRENCH (ONE AT SUSGRADE AND <br />ONE AT 50% OF TRENCH DEPTHI), <br />5. IN PLACE DENSITY AND MOISTURE CONTENTWILL RE <br />DETERMINED US@NG NUCLEAR NIFTHOD, ASTM <br />E. LABORATORY MAXIMUM DRY DENSITY :AND <br />OPTIMUM UM MOISTURE CONTENTWILL BE DETEWINED <br />USING THE MODIHED PROCTOR METHOD IN <br />ACCORDANCE VOTH ASTM D-1557. <br />ACITY OF EVERETT <br />PUBLIC WORKS DEPARTMENT <br />12-1 ,.; <br />�.rgUtiri�,+ qR(r�ig'i{�'i'H� <br />COMPACTION <br />