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# Cantilever sheet pile walls Notes | EduRev

## : Cantilever sheet pile walls Notes | EduRev

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Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Objectives
In this section you will learn the following
Introduction

Page 2

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Objectives
In this section you will learn the following
Introduction

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]

Types
Supporting earth/backfill.

Assumptions.
Wall is smooth and vertical and earth pressure theories applicable to rigid retaining walls only.
The pivot point should be at a depth xo from ground level and not at the sheet pile wall.
All equilibrium equations are applicable to sheet pile wall.
Sum over vertical moments is not required for design of sheet pile wall because weight of sheet pile wall is
considered as negligible.

Page 3

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Objectives
In this section you will learn the following
Introduction

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]

Types
Supporting earth/backfill.

Assumptions.
Wall is smooth and vertical and earth pressure theories applicable to rigid retaining walls only.
The pivot point should be at a depth xo from ground level and not at the sheet pile wall.
All equilibrium equations are applicable to sheet pile wall.
Sum over vertical moments is not required for design of sheet pile wall because weight of sheet pile wall is
considered as negligible.

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Recap
In this section you have learnt the following.
Introduction
Page 4

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Objectives
In this section you will learn the following
Introduction

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]

Types
Supporting earth/backfill.

Assumptions.
Wall is smooth and vertical and earth pressure theories applicable to rigid retaining walls only.
The pivot point should be at a depth xo from ground level and not at the sheet pile wall.
All equilibrium equations are applicable to sheet pile wall.
Sum over vertical moments is not required for design of sheet pile wall because weight of sheet pile wall is
considered as negligible.

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Recap
In this section you have learnt the following.
Introduction
Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.2: Cantilever sheet pile with concentrated load.
]
Objectives
In this section you will learn the following
Cantilever sheet pile with concentrated load
Some problem by assuming parabolic variation
Page 5

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Objectives
In this section you will learn the following
Introduction

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]

Types
Supporting earth/backfill.

Assumptions.
Wall is smooth and vertical and earth pressure theories applicable to rigid retaining walls only.
The pivot point should be at a depth xo from ground level and not at the sheet pile wall.
All equilibrium equations are applicable to sheet pile wall.
Sum over vertical moments is not required for design of sheet pile wall because weight of sheet pile wall is
considered as negligible.

Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.1: Introduction ]
Recap
In this section you have learnt the following.
Introduction
Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.2: Cantilever sheet pile with concentrated load.
]
Objectives
In this section you will learn the following
Cantilever sheet pile with concentrated load
Some problem by assuming parabolic variation
Module 6 : Design of Retaining Structures
Lecture 27 : Cantilever sheet pile walls [ Section 27.2: Cantilever sheet pile with concentrated load.
]

Cantilever sheet pile with concentrated load.

Cantilever sheet piling walls depend on the passive resisting capacity of the soil below the depth of excavation
to prevent overturning. The depth of sheet piling walls below the bottom of the excavation is determined by
using the difference between the passive and active pressures acting on the wall. The theoretical depth of pile
penetration below the depth of excavation is obtained by equating horizontal forces and by taking moments
about an assumed bottom of piling. The theoretical depth of penetration represents the point of rotation of
the piling. Additional penetration is needed to obtain some fixity for the piling. Computed piling depths are
generally increased 20% to 40% to obtain some fixity and to prevent lateral movement at the bottom of the
piling.
Sum of the Horizontal moments is,
1.
,

H is the horizontal force at tip of pile.
Sum of the moments about point ‘O',
2.
,

&  are the total earth pressure forces, and h is the height of the sheet pile above ground level.

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