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- , - �IVIL DESIGN <br /> INNOVATIVE ENGINEERING SOLUTIONS <br /> June 04,2012 <br /> Mr. Bill McGowan <br /> AB Hardscape, Inc. <br /> 28746 128th St.NW <br /> Zimmerman,Minnesota 55398 <br /> RE: Kimmes Residence Retaining Wall(12-187) <br /> Orono, Minnesota <br /> Design Assumptions: <br /> Boulder Wall, Minimum 15° Wall Batter <br /> NCMA Design Analysis <br /> Live Load: 50 PSF <br /> Dead Load: None <br /> Toe Slope: SH:1 V Ma�cimum <br /> Back Slope: SH:1 V Maximum <br /> Seismic: None <br /> Bearing Capacity: 1,800 PSF <br /> NCMA Safe Factors: <br /> Slidin 1.50 <br /> Overturnin 1.50 <br /> Bearin 2.00 <br /> Soil Design Properties: <br /> � y c <br /> Retained Soil 30° 120 PCF 0 (Sand) <br /> Eoundation Soil 26° 120 PCF 0 (Onsite Lean Clay) <br /> Notes: <br /> No soils information was provided for this preliminary design. The onsite material is assumed to be a <br /> sandy lean clay with an internal friction angle of 26°. Where unsuitable soils are found, a subcut may be <br /> required and structural fill shall be placed and compacted to provide an adequate bearing foundation. The <br /> above minimum soil strength parameters shall be verified prior to construction. CDP shall be contacted if <br /> the above soil strength parameters cannot be met and a redesign may be required. <br /> Wall layouts and elevations obtained from plans prepared by Narby & Associates Landscape Architects <br /> dated 03/22/2011. <br /> Page 1 of 2 <br /> C(VIL ENG[NEERING �� STRL'CTUP.r1L,ENGINEERiNG � GEOTECHNICAL EN(i[NEER(NG � EARTFI RETENTION�EIGN <br /> Civil Design Professionals ° 8609 Lyndale Ave.S.,Suite 200,Bloomington,MN 55420 � Office: 952-303-5312 � auww.cdp-us.com <br />