   Chapter 3, Problem 3.29P Principles of Geotechnical Enginee...

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

Solutions

Chapter
Section Principles of Geotechnical Enginee...

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

Refer to Problem 3.28. To improve the bearing capacity of the same sub-base, the field engineers decided to increase the relative density to 88% by additional compaction. What would be the final dry unit weight of the compacted sub-base?3.28 In a highway project, the granular sub-base layer is compacted to a moist unit weight of 122 lb/ft3 at a moisture content of 16%. What is the relative density of the compacted sub-base? Given: emax = 0.85, emin = 0.42, and Gs = 2.68.

To determine

Calculate the dry unit weight of the compacted sub-base.

Explanation

Given information:

The maximum void ratio (emax) is 0.85.

The minimum void ratio (emin) is 0.42.

The specific gravity of soil solids (Gs) is 2.68.

The moist unit weight (γ) is 122lb/ft3.

The moisture content (w) is 16%.

The relative density of compaction (Dr) is 88%.

Calculation:

Consider the unit weight of water (γw) is 62.4lb/ft3.

Calculate the void ratio (e) using the relation.

Dr=emaxeemaxemin

Substitute 0.85 for emax, 0.42 for emin, and 88% for Dr

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

Explain the difference between softwood and hardwood.

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

How is a blade server different from a regular server?

Principles of Information Systems (MindTap Course List)

Describe the strategy of mitigation.

Management Of Information Security

What is cardinality, and what symbols do you use in the crowâ€™s foot notation method?

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

The area of the hard drive used for virtual memory is called a swap file.

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