6617 ASSOCIATED BLVD AMAZON Geotech Report 2022-10-25

• • nKLEY NFELDERR • People. • • 4 CONCLUSIONS AND RECOMMENDATIONS • • • 4.1 GENERAL • • • The following opinions, conclusions, and recommendations are based on the properties of the • materials encountered in the borings, laboratory results, and engineering analysis. The • geotechnical recommendations to follow are contingent on earthwork performed in accordance • with the earthwork guidelines in Section 4.5. • 4.2 FOUNDATIONS • •• 4.2.1 General • • Based on our understanding of the project, significant structural improvements of the existing • warehouse building are not currently planned. However, lightly loaded structures such as new • building openings and exterior canopies may be constructed. We assume that any potential • structural improvements will incur a maximum ultimate load case of 10 kips per foundation. Due • to the presence of fill soils at the site, heavier foundation loads may induce excessive settlement • and should be evaluated on a case-by-case basis. Kleinfelder should be provided final loading • and layout information for review when available. • • Recommendations for spread footing and short drilled pile foundations to support the design of • building improvements are presented below. • • 4.2.2 Spread Footing Foundations for Building Improvements • • Allowable Bearing Pressure • Spread footings constructed on existing fill subgrade soils is not recommended due to the • potential for deleterious or otherwise unsuitable material being present in the existing fill. If • spread footing foundations are desired, we recommend that all existing fill be removed from • within the footprint of the foundation and that the footing is constructed either directly on the • native till soils or on compacted structural fill or lean-mix concrete extending from the base of • the footing to undisturbed native subgrade as illustrated below. • • • 20203884.001A/SEA20R110164 Page 11 of 28 June 1, 2020 • ©2020 Kleinfelder •