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Material: Foundation <br />Strength Type: Mohr-Coulomb <br />Unit Weight: 120 Ib/ft3 <br />Cohesion: 1 psf <br />Friction Angle: 26 degrees <br />Water Surface: None <br />Material: Ph V Geomembrane/Soil Liner <br />Strength Type: Mohr-Coulomb <br />Unit Weight: 120 Ib/ft3 <br />Cohesion: 1 psf <br />Friction Angle: 18 degrees <br />Water Surface: None <br />Material: Structural Fill <br />Strength Type: Mohr-Coulomb <br />Unit Weight: 120 Ib/ft3 <br />Cohesion: 1 psf <br />Friction Angle: 38 degrees <br />Water Surface: None <br />Global Minimums <br />Method: spencer <br />FS: 1.153340 <br />Center: 573.396, 706.914 <br />Radius: 369.822 <br />Left Slip Surface Endpoint: 482.152, 348.525 <br />Right Slip Surface Endpoint: 886.434, 510.000 <br />Resisting Moment=3.43534e+008 lb-ft <br />Driving Moment=2.97859e+008 lb-ft <br />Resisting Horizontal Force=814364 lb <br />Driving Horizontal Force=706090 lb <br />Valid / Invalid Surfaces <br />Method: spencer <br />Number of Valid Surfaces: 3278 <br />Number of Invalid Surfaces: 1573 <br />Error Codes: <br />Error Code -101 reported for 107 surfaces <br />Error Code -112 reported for 3 surfaces <br />Error Code -1000 reported for 1463 surfaces <br />Error Codes <br />The following errors were encountered during the computation: <br />-101 = Only one (or zero) <br />surface / slope intersections. <br />-112 = The coefficient M-Alpha = cos(alpha)(1+tan(alpha)tan(phi)/F) <br />< 0.2 for the final iteration of the safety factor calculation. This screens out <br />some slip surfaces which may not be valid in the context of the analysis, in <br />particular, deep seated slip surfaces with many high negative base angle <br />slices in the passive zone. <br />4.