SITUATION: A group of piles are arranged as shown in the figure. The piles are square in section with sides equal to 300 mm and has a spacing of 1.20 m on centers. One pile has a total length of 15 m. Unit weight of clay is 18.8 kN/m² and has a cohesion of 70 kPa. Ground water table is located at depth of 18 m below the ground surface. Adhesion factor is 0.70. - 1.20 m-1.20 m-1.20 m 1.20 m 1.20 m Determine the ultimate capacity if the piles in the group act as a block. 15238.4 kN A 16335.9 kN 17228.5 kN 18219.3 kN

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Pressure and Stress