A 3 m deep excavation will be supported by a cantilever sheet pile. The foundation soil is dense sand, but it is assumed that the pile tip penetrates impermeable soil so hydrostatic pore pressure can be used. A surcharge of 10kPa is applied at the ground level. The water table is at the ground surface and dredge line as shown. Use Yw=10kN/m³ for your calculations. a) Using a factor of safety of 2.0 for Kp, check if D'=5m is safe or not (no need to iterate for other D'). b) Calculate the maximum bending moment.
A 3 m deep excavation will be supported by a cantilever sheet pile. The foundation soil is dense sand, but it is assumed that the pile tip penetrates impermeable soil so hydrostatic pore pressure can be used. A surcharge of 10kPa is applied at the ground level. The water table is at the ground surface and dredge line as shown. Use Yw=10kN/m³ for your calculations. a) Using a factor of safety of 2.0 for Kp, check if D'=5m is safe or not (no need to iterate for other D'). b) Calculate the maximum bending moment.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 3 m deep excavation will be supported by a cantilever sheet pile. The foundation soil is dense sand, but it is assumed that the pile tip penetrates impermeable soil so hydrostatic pore pressure can be used. A surcharge of 10kPa is applied at the ground level. The water table is at the ground surface and dredge line as shown. Use Yw=10kN/m³ for your calculations.
a) Using a factor of safety of 2.0 for Kp, check if D'=5m is safe or not (no need to iterate for other D').
b) Calculate the maximum bending moment.
Transcribed Image Text:H=3.0m
D.L.
77
D'=5m?
10 kPa
G.L..
Dense sand
Yt=20.0 kN/m³
c'=0
Ka=0.2
Kp=6.0
Impermeable soil
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