   Chapter 3, Problem 3.25P 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

For a given sandy soil, emax = 0.75 and emin = 0.52. If Gs = 2.67 and Dr = 65%, determine the void ratio and the dry unit weight.

To determine

Calculate the void ratio and the dry unit weight of sandy soil.

Explanation

Given information:

The maximum void ratio (emax) is 0.75.

The minimum void ratio (emin) is 0.52.

The specific gravity of soil solids (Gs) is 2.67.

The relative density of compaction (Dr) is 65%.

Calculation:

Consider the unit weight of water (γw) is 9.81kN/m3.

Calculate the void ratio (e) using the relation.

Dr=emaxeemaxemin

Substitute 0.75 for emax, 0.52 for emin, and 65% for Dr.

65100=0.75e0

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