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U T HLOCK, C. <br />OVERTURNING ABOUT THE TOE <br />Overturning at the base is checked by assuming rotation about the front toe by the block mass and the soil <br />retained on the blocks. Allowable overturning can be defined by eccentricity (e/L). For concrete leveling pads <br />eccentricity is checked at the base of the pad. <br />Moments resisting eccentricity = M1 + M2 + MLvIPad + MPav + MPgv <br />6760 + 1504 + 4338 + 1010 <br />Moments causing eccentricity = MPah + MPq + MPgv <br />2775 + 1077 <br />e = L/2 - (Mr - Mo)/ N1 <br />e=4.92/2 - (13612 - 3852) /5976 <br />FSot = Mr / Mo <br />FSot =13612 / 3852 <br />Mr =13612 ft-Ibs <br />Mo =3852 ft-Ibs <br />e =0.73 <br />e/L = 0.15 <br />FSot =3.53 <br />UltraWall 4.0.16287.0 Page 9 <br />