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Sn' <br /> 'ON h ERRA <br /> WALL SYSTEM <br /> OVERTURNING ABOUT THE TOE <br /> Overturning at the base is checked by assuming rotation about the front toe by the block mass, soil retained <br /> on the blocks or within the reinforced zone. Allowable overturning can be defined by eccentricity(e/L) or by the ratio <br /> of resisting moments divided by overturning moment (FSot). <br /> Moments resisting overturning = Sum(M1 to M6) + MPav+ MPqv Mr=1,552,033 ft-lbs <br /> Moments causing overturning = MPah + MPqh Mo=317,680 ft-lbs <br /> Factor of safety= Mr/Mo FSot=4.89 OK <br /> Note: Calculations and quantities are for PRELIMINARY ANALYTICAL USE ONLY and MUST NOT be used for final <br /> n or construction without the independent review, verification, and approval by a qualified professional engineer. <br /> UltraWall 5.0.19183 11 <br />