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Civil Solutions <br /> Group,LCC. <br /> MEMORANDUM <br /> DATE: October 14, 2010 <br /> TO: Michael Gallus—Michael Gallus Construction <br /> FROM: Michael S. Weinkauf, E.I.T. —Civil Solutions Group, LLC. <br /> RE: Briggs Residence Boulder Wall (10-597) <br /> Orono, Minnesota <br /> Design Assumptions: <br /> Boulders, 15° Minimum Setback <br /> Coulomb Design Analysis <br /> Live Load: 50 PSF <br /> Dead Load: None <br /> Back Slope: SH:1 V Maximum <br /> Toe Slope: None <br /> Soil Design Properties: <br /> � �y c <br /> Retained Soil 26° 120 PCF 0 <br /> Foundation Soil 26° 120 PCF 0 <br /> Notes: <br /> No soils information provided. Onsite soils assumed sandy lean clay with an internal friction <br /> angle of 26°. The above minimum soil strength parameters shall be verified prior to construction. <br /> Civil Solutions Group shall be contacted if the above minimum soil strength parameters can not <br /> be met, and redesi�m may be required. <br /> See project specifications for additional information and requirements. <br /> We appreciate the opportunity of providing services to you. If you have any questions or <br /> comments regarding this project, feel free to contact us. <br /> I <br /> . <br /> www.csgmn.com • 8200 Humboldt Avenue South,Suite�00,Bloomfngton,Minnesota 55431 • Telephone(952)294.4755 Fax(952)294.4595 <br />