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Geotechnical Engineering Report - Revised lferracon <br /> Kaiser Everett Medical Center Everett, Washington <br /> December 18, 2019 Terracon Project No. 81195071 GeoReport. <br /> If inclement weather or in situ soil moisture content prevents the use of on-site material as <br /> structural fill, we recommend importing granular fill containing less than 5 percent by weight <br /> passing the U.S. No. 200 sieve, based on the fraction passing the U.S. No. 4 sieve. <br /> Stockpiled soils should be protected with polyethylene sheeting anchored to withstand local wind <br /> conditions and preservation of the soil's moisture content. <br /> SHALLOW FOUNDATIONS <br /> If the site has been prepared in accordance with the requirements noted in Earthwork, the <br /> following design parameters are applicable for shallow foundations. <br /> Design Parameters — Compressive Loads <br /> Description Spread Footing Wall Footing <br /> Net allowable bearing pressure <br /> Very dense native soil 6,000 psf 6,000 psf <br /> ■ Medium dense structural 3,000 psf 3,000 psf <br /> fill/weathered glacial till/very stiff silt <br /> Minimum dimensions 24 inches 18 inches <br /> Minimum embedment below finished grade 3 18 inches 18 inches <br /> Approximate static total settlement from <1 inch <1 inch <br /> foundation loads for condition specified" <br /> Estimated static differential settlement from <br /> foundation loads About 2/3 of total settlement <br /> Ultimate passive pressure <br /> Compacted structural fill 400 pcf(equivalent fluid unit weight) <br /> Ultimate coefficient of sliding friction' 0.45 <br /> Responsive ■ Resourceful ■ Reliable <br />