BuyFindarrow_forward

Principles of Geotechnical Enginee...

9th Edition
Braja M. Das + 1 other
ISBN: 9781305970939

Solutions

Chapter
Section
BuyFindarrow_forward

Principles of Geotechnical Enginee...

9th Edition
Braja M. Das + 1 other
ISBN: 9781305970939
Textbook Problem

13.13 through 13.16 Assume that the retaining wall shown in Figure 13.39 is frictionless. For each problem, determine the Rankine passive force per unit length of the wall, the variation of active earth pressure with depth, and the location of the resultant.

images

images

Figure 13.39

To determine

The Rankine passive force σp(z=H) per unit length of the wall, the variation of active earth pressure Pa with depth, and the location z¯ of the resultant measured from the bottom of the wall.

Explanation

Given information:

The height (H) of the retaining wall is 25 ft.

The soil friction angle ϕ is 33°.

The angle of wall friction δ is 0.

The unit weight γ of the soil is 119lb/ft3

Calculation:

Calculate the passive earth pressure coefficient (Kp) using the relation.

Kp=tan2(45+ϕ2)

Substitute 33° for ϕ.

Ka=tan2(45+33°2)=tan2(45+16.5)=tan2(61.5)=3.392

Calculate Rankine passive force σp(z=H) per unit length of the wall using the relation.

σp(z=H)=KpγH

Substitute 3.392 for Kp, 119lb/ft3 for γ, and 25 ft for H.

σp(z=H)=3.392×119×25=10,091lb/ft2

Thus, the Rankine passive force per unit length of the wall is 10,091lb/ft2_

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Engineering Solutions

Find more solutions based on key concepts

Show solutions add

Using MATLAB, create a table that shows the relationship among units of the height of people in centimeters, in...

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

Briefly define a scriber and its use.

Precision Machining Technology (MindTap Course List)

Why should you never change the current setting during a weld?

Welding: Principles and Applications (MindTap Course List)

Cannot Access Network You brought your personal laptop to your place of employment so that you can take care of...

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