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~ Finish grade <br />/ Engineered Fill _/ <br />~,:-----=----Existing grade <br />Approximate limi:-=--=.J 3' (Min imumJ) fr: '\ <br />of excavation ------------ <br />Optional bench dra in to be J <br />determined in the field (see Figure 7) <br />Intermediate benches extending at <br />least 3 feet into competent <br />material , angled sl ightly into hillside <br />Note: Fill slopes should be over-built at least 18 to 24 inches <br />and trimmed to expose compacted fill. <br />CORNERSTONE <br />EARTH GROUP <br />\_ I ~ ' 2% slope ~-'-=----' <br />Typical subdrain (see Figure 7)..../"T• ~ ►I <br />Discharge to free -drain ing outlet <br />Typical Keyway and Bench Detail <br />Lester-Shriner Parcels <br />Pleasanton, CA <br />Keyway at least 20 feet wide and 5 feet <br />into competent material , angled slightly <br />into hillside . <br />(Actual keyway depth and width to be <br />determined by the geotechnical <br />engineer during grading) <br />Not to scale <br />Project Number <br />132-8-2 <br />Figure Number <br />Figure 6 <br />Date October 2014 Drawn By RRN