A cantilever sheet pile is 8.0 m long with a depth of embedment of 3.0 m. Angle of internal friction of the soil supported by the sheet pile is 32° and has a unit weight of 18.75 kN/m³. a) Determine the active force acting on the sheet pile (per meter length). b) Compute the passive force acting on the sheet pile (per meter length). c) Determine the theoretical passive force that must be mobilized to ensure stability.

A cantilever sheet pile is 8.0 m long with a depth of embedment of 3.0 m. Angle of internal friction of the soil supported by the sheet pile is 32° and has a unit weight of 18.75 kN/m³. a) Determine the active force acting on the sheet pile (per meter length). b) Compute the passive force acting on the sheet pile (per meter length). c) Determine the theoretical passive force that must be mobilized to ensure stability.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

A cantilever sheet pile is 8.0 m long with a depth
of embedment of 3.0 m. Angle of internal friction
of the soil supported by the sheet pile is 32° and
has a unit weight of 18.75 kN/m³.
a) Determine the active force acting on the sheet
pile (per meter length).
b) Compute the passive force acting on the sheet
pile (per meter length).
c) Determine the theoretical passive force that
must be mobilized to ensure stability.

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