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1 Design Criteria <br /> • The design for the boulder retaining wall making up this project is based on the following assumptions <br /> and our understanding of this project from a recent telephone consultation with Boulder Images,Inc.and <br /> proposed plans prepared by others& submitted by Boulder Images,Inc. <br /> • Soil Unit Weight 120 PCF <br /> • Field Stone Unit Weight 165 PCF <br /> • "Ka"(Assumed Active Soil Pressure Coefficient) 0.307 <br /> • "Kp"(Assumed Active Soil Pressure Coefficient) 3.255 <br /> • "f'(Assumed Friction Coefficient) 0.50 <br /> • Minimum Wall Batter See Plans <br /> • Top Wall Offset See Plans <br /> • Soil Surcharge 0 PSF <br /> • The retained slope is assumed to be stable. <br />