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• <br /> • <br /> KL EINFEL DER• <br /> Bright People.Right Solutions. <br /> • <br /> • . • <br /> • <br /> •• DESIGN <br /> OESION <br /> POOTMgO win <br /> �-- <br /> FOOliNG LEVEL 0.. <br /> • STRUCTURAL O <br /> FILL <br /> • <br /> • RECOAI. 0 RPCOwt6M3F1)0•_._.__ _..... -. <br /> EXCAVATION LEVEL <br /> • LEAN CONCRETE BACKFILL OVER-EXCAVATION i BACKFILL ZONE <br /> NOTE EXCAVATIONS ARE SNOWN VERTICAL 11ON1EVER THE NOTE F:ri, t;'!G_NSARESHONMvERT)CM,FIOVrEVER ThE <br /> • SI[1EVJAI f S sHout ©F sioPEG AS NFCF SSARY VCR SAFETY `!� ''' ! SHOULD 6E SLOPED AS NEC SSARY�OR SAFETY <br /> • <br /> • Spread footings founded directly on the native till soils or on compacted structural fill or lean-mix <br /> • concrete extending from the base of the footing to undisturbed native subgrade may be <br /> • designed for a net allowable bearing pressure of 3,000 psf for dead plus sustained live loads. <br /> • <br /> • A one-third increase in the appropriate bearing value can be used for wind or seismic loads. All <br /> • footings should be established at a depth of at least 18 inches below the lowest adjacent grade. <br /> • The footing dimension and reinforcement should be designed by the structural engineer. <br /> • <br /> • Estimated Settlement <br /> • We estimate that total static settlement for footings designed in accordance with the <br /> • recommendations presented above should be on the order 1/2 inch or less, depending on the <br /> • size of the footing and applied load. Foundation loads in excess of 10 kips should be evaluated <br /> • for settlement on a case-by-case basis. <br /> • <br /> • If higher settlements tolerable, it may be appropriate to found spread footings may on existing fill <br /> • soils provided the upper 18 inches of footing subgrade is moisture conditioned and compacted <br /> • to 95 percent of the maximum dry density as determined by modified proctor laboratory testing <br /> • (ASTM D1557). Such footings may be designed using a net allowable bearing pressure of 1,500 <br /> • psf for dead plus sustained live loads. <br /> • <br /> • Lateral Resistance <br /> • Lateral load resistance may be derived from passive resistance along the vertical sides of the <br /> • footings, friction acting at the base of the footings, or a combination of the two. An allowable <br /> • passive earth pressure of 250 psf per foot of depth may be used for design for footings cast <br /> • against dense native soils or compacted structural fill. The allowable passive earth pressure <br /> • <br /> • 20203884.001A/SEA20R110164 Page 12 of 28 June 1, 2020 <br /> ©2020 Kleinfelder <br /> • <br /> • <br />