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Refer to Figure P13.9. Assume the botton 8 m to be hard rock and the following values. qu(concrete) 5 28,000 kN/m2 qu(rock) 5 46,000 kN/m2 E(concrete) 5 22 3 106 kN/m2 Ecore(rock) 5 12.1 3 106 kN/m2 RQD(rock) 5 75% Spacing of discontinuity in rock 5 500 mm Thickness of individual discontinuity in rock 5 3 mm Estimate the allowable load-bearing capacity of the drilled shaft using the procedure of Reese and O’Neill. Use FS 5 3
Refer to Figure P13.9. Assume the botton 8 m to be hard rock and the following values. qu(concrete) 5 28,000 kN/m2 qu(rock) 5 46,000 kN/m2 E(concrete) 5 22 3 106 kN/m2 Ecore(rock) 5 12.1 3 106 kN/m2 RQD(rock) 5 75%

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