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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 /> Lateral Earth Pressure Design Parameters <br /> Earth Pressure Coefficient for Backfill Uniform Pressure 3,4,5 Effective Fluid <br /> Condition Type pi (psf) Pressures (psf) a'5 <br /> 2. Uniform, granular, horizontal backfill, compacted to at least 92 percent of the ASTM D 1557 maximum dry <br /> density. <br /> 3. Uniform surcharge, where S is surcharge pressure. <br /> 4. Loading from heavy compaction equipment is not included. <br /> 5. No safety factor is included in these values. <br /> 6. Values are in addition to static earth pressures <br /> PAVEMENTS <br /> General Pavement Comments <br /> Pavement designs are provided for the traffic conditions and pavement life conditions as noted in <br /> Project Descriptioi and in the following sections of this report. A critical aspect of pavement <br /> performance is site preparation. Pavement designs, noted in this section, must be applied to the <br /> site, which has been prepared as recommended in the Earthwork section. <br /> The standard equivalent single-axle load (ESAL)was estimated using 1993 Guideline for Design <br /> of Pavement Structures by the American Association of State Highway and Transportation <br /> Officials (AASHTO-1993). The assumed traffic loading for flexible and rigid pavement areas on a <br /> per day basis are: <br /> 1,000 passenger cars/pick-up trucks and vans/recreational vehicles per day <br /> 10 delivery trucks and garbage/dumpster trucks per week <br /> No tractor-trailer trucks <br /> A 20-year design life is assumed. If traffic volumes will exceed the assumed values, Terracon <br /> should be notified in order to provide pavement sections designed for higher levels of traffic. For <br /> design purposes, we have assumed a CBR value of 15. Any imported or borrow source fill placed <br /> below the proposed pavements should have a CBR value of at least 15. A modulus of subgrade <br /> reaction of 250 Ibs per cubic inch (pci) was assumed for compacted subgrade for concrete <br /> pavement design <br /> Pavement Design <br /> Design of Asphaltic Concrete (AC) pavements are based on the 1993 AASHTO guidelines. <br /> Minimum recommended pavement section thicknesses are presented below: <br /> Responsive ■ Resourceful ■ Reliable <br />