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(pc) CIVILDESIGN RECEIVED <br /> PROFESSIONALS UN 2018 <br /> INNOVATIVE ENGINEERING SOLUTIONS <br /> CITY OF ORONO <br /> June 13, 2016 <br /> Katie Nicklow <br /> Sou'thview Design <br /> RE: 1130 Old Crystal Bay Road Retaining Walls(16-0509) <br /> Orono,Minnesota <br /> Design Assumptions: <br /> Boulders <br /> Wall Batter: 15° Design: Coulomb <br /> Live Load: 50 PSF Dead Load: None <br /> Toe Slope: 4H:1V Back Slope: None <br /> Seismic: N/A Applied Bearing: 2,250 PSF <br /> Soil Design Properties: y c <br /> Retained Soil 26° 120 PCF 0 PSF (Sandy Lean Clay) <br /> Foundation Soil 26° 120 PCF 0 PSF (Sandy Lean Clay) <br /> Notes: <br /> No soils or geotechnical information was provided or available at the time of this design. Soil borings should <br /> be drilled along the walls prior to construction.The onsite material is assumed to be a Sandy Lean Clay with <br /> an internal friction angle of 26°. Where unsuitable soils are found, a subcut may be required and structural <br /> fill shall be placed and compacted to provide an adequate bearing foundation. The above minimum soil <br /> strength parameters shall be verified prior to construction. CDP shall be contacted if the above soil strength <br /> parameters cannot be met and a redesign may be required. <br /> A global stability analysis has been performed using the soil design parameters as listed above. The project <br /> geotechnical engineer shall confirm global stability based on the proposed wall design and the actual <br /> parameters of the onsite soils. <br /> During wall construction, excavation shall remain within the construction limits shown on the plans. All <br /> available means and methods used to keep excavation within the construction limits shall be incidental. The <br /> contractor shall coordinate relocation of all existing conduits and services with the utility provider. <br /> We appreciate the opportunity of providing services to you. If you have any questions or comments regarding <br /> this project,please feel free to contact us. <br /> Sincerely, <br /> Daniel V. Kennedy <br /> Civil Design Professionals • 8609 Lyndale Ave.S.,Suite 200 Bloomington,MN 55420 • Office(952)303-5312 • www.cdp-us.com <br />