With reference to the generic wedge shown in the sketch and the data in Table 2.9, the

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With reference to the generic wedge shown in the sketch and the data in Table 2.9, the water table is below the toe, vertical distance between A and O is 85 ft (25.9 m), point T is 40 ft from point A, rock specific weight is 158pcf (25.0kN/m3), and active wedge volume is 3,850 yd3 (2,944 m3).

(a) Find the dip direction (azimuth) and dip of the line of intersection of joint planes A and B.

(b) Find the range of intersection line azimuths that preclude sliding down the line of intersection.

(c) Find the length of the line of intersection between the face and plane A. Note: The foreland isflat.

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