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NO ROADWAY,PARKING LOTS <br /> OR BUILDING FOOTINGS <br /> IN THIS AREA <br /> MIN 1' <br /> 2(OR FLATTER) <br /> 1 V <br /> / <br /> / <br /> I a <br /> +°� .4iN 1'WIDE LAYER OF 2"-4"QUARRY <br /> ', o SPALLS ADJACENT TO ROCKERY <br /> 1 1111111sgA1 <br /> 'iv6 •0` / 1 <br /> _ ;0 / STABLE CUT FACE IN NATURAL MATERIAL <br /> F- <br /> °4 (SEE NOTE 5) <br /> I <br /> 'a; / <br /> ril .r. , / <br /> _.o`I :. / <br /> ` 'O/ 1"(OR LESS)DIAMETER WASHED GRAVEL <br /> 0d.'• MIN 6"COVER OVER PIPE, <br /> .' t 2"GRAVEL UNDER PIPE <br /> 12" ,,, ',E. <br /> I `���`���G � <br /> MIN 4"DIAMETER PERFORATED <br /> FIRM UNDISTURBED SOIL RIGID PVC PIPE.SLOPE TO <br /> (SEE NOTE 2) DRAIN TO APPROVED OUTLET. <br /> NOTES: <br /> 1. ROCKERIES HIGHER THAN 5'SHALL BE CONSTRUCTED OF ROCKS OF GRADUATED SIZES FROM 5-MAN TO 3-MAN, <br /> FROM BOTTOM TO TOP.ROCKERIES OF 5'OR LOWER SHALL BE CONSTRUCTED OF 4-MAN TO 3-MAN,FROM <br /> BOTTOM TO TOP. <br /> 2. INSPECTION OF SUBGRADE,PLACEMENT OF BASE COURSE AND DRAINAGE,AND FINISHED ROCKERY BY ENGINEER <br /> IS REQUIRED. <br /> 3. ROCK SHALL BE SOUND AND HAVE A MINIMUM DENSITY OF 160 POUNDS PER CUBIC FOOT. <br /> 4. THE LONG DIMENSION OF ALL ROCKS SHALL BE PLACED PERPENDICULAR TO THE WALL.EACH ROCK SHOULD BEAR ON <br /> TWO ROCKS IN THE TIER BELOW. <br /> 5. ROCKERIES ARE EROSION-CONTROL STRUCTURES,NOT RETAINING WALLS.NATURAL MATERIAL MUST BE STABLE AND <br /> FREE STANDING IN CUT FACE.MAXIMUM HEIGHT OF 3 FEET FOR ROCKERIES FACING FILL SOILS. <br /> 6. SEE TEXT OF LETTER FOR ADDITIONAL RECOMMENDATIONS. <br /> Rock Lb. Avg.Dimension(in.) <br /> 1-Man 100-300 12 to 18 <br /> 3 2-Man 300-800 18 to 28 <br /> z 3-Man 800-1500 28 to 36 <br /> 4-Man 1500-2200 36 to 48 <br /> K 5-Man 2200-4000 48 to 54 <br /> 1, <br /> N <br /> IO <br /> O <br /> L UNREINFORCED ROCKERY DETAIL FIGURE 3 <br /> Associated Earth Sciences, Inc. <br /> Y ,a= .'..' �i I% KREBS PROPERTY DATE 2/07 <br /> gi, ��` • '% ® EVERETT,WASHINGTON <br /> PROJECT NO. KE070023A <br /> 0 <br />