Chapter 9, Problem 9.10P

BuyFind*arrow_forward*

9th Edition

Braja M. Das + 1 other

ISBN: 9781305970939

Textbook Problem

Refer to Problem 9.9. Water may be introduced into the cut to improve the stability against heaving. Assuming that a cut is made up to the maximum permissible depth calculated in Problem 9.9, what would be the required height of water inside the cut in order to ensure a factor of safety of 1.5?

**9.9** Refer to Figure 9.28. What would be the maximum permissible depth of cut before heaving would occur?

**Figure 9.28**

To determine

Find the required height (*h*) of water inside the cut in order to ensure a factor of safety of 1.5.

Explanation

Given information:

The thickness

The depth

The depth (*d*) of water table is 6.0 m.

The density of the saturated clay

The density of the sand

The maximum permissible depth (H) is 6.88 m.

The factor of safety is 1.5.

Calculation:

Consider the stability of point A in terms of heaving:

Calculate the saturated unit weight

Here,

Take the unit weight of the water as

Take the density of the water as

Substitute

Calculate the total stress *A* using the relation.

Substitute 10 m for

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

Fundamentals of Geotechnical Engineering (MindTap Course List)

Mechanics of Materials (MindTap Course List)

A Guide to SQL

Precision Machining Technology (MindTap Course List)

Principles of Information Systems (MindTap Course List)

Fundamentals of Information Systems

Fundamentals of Information Systems

Database Systems: Design, Implementation, & Management

Cornerstones of Financial Accounting

Database Systems: Design, Implementation, & Management

Automotive Technology: A Systems Approach (MindTap Course List)

Principles of Information Security (MindTap Course List)

Solid Waste Engineering

Systems Analysis and Design (Shelly Cashman Series) (MindTap Course List)

International Edition---engineering Mechanics: Statics, 4th Edition

Management Of Information Security

Fundamentals of Chemical Engineering Thermodynamics (MindTap Course List)

EBK ELECTRICAL WIRING RESIDENTIAL

Electric Motor Control

Steel Design (Activate Learning with these NEW titles from Engineering!)

Automotive Technology

Structural Analysis

Network+ Guide to Networks (MindTap Course List)

Enhanced Discovering Computers 2017 (Shelly Cashman Series) (MindTap Course List)

Welding: Principles and Applications (MindTap Course List)