Square concrete piles are arranged in 3 row by 4 column formation beneath the pile cap. These piles are embedded into several layers of cohesive soil. The first layer is 3.36m deep and the second layer is 3.42m deep. The total depth of the third layer was not fully captured in the geotechnical report and is assumed to extend indefinitely. The piles are 0.45m wide, and are spaced 1.45m apart from each other. Each pile span 11.89m in length. The first layer has c = 60 kPa and α = 1.00. The second layer has c = 87 kPa and α = 0.81. The third layer has c = 85 kPa and α = 0.70. The bearing capacity factor Nc is equal to 8. What is the group efficiency (%) for the pile? Consider ultimate capacities.
Square concrete piles are arranged in 3 row by 4 column formation beneath the pile cap. These piles are embedded into several layers of cohesive soil. The first layer is 3.36m deep and the second layer is 3.42m deep. The total depth of the third layer was not fully captured in the geotechnical report and is assumed to extend indefinitely.
The piles are 0.45m wide, and are spaced 1.45m apart from each other. Each pile span 11.89m in length. The first layer has c = 60 kPa and α = 1.00. The second layer has c = 87 kPa and α = 0.81. The third layer has c = 85 kPa and α = 0.70. The bearing capacity factor Nc is equal to 8.
What is the group efficiency (%) for the pile? Consider ultimate capacities.
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