Chapter 3, Problem 3.8P

### Principles of Geotechnical Enginee...

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

Chapter
Section

### Principles of Geotechnical Enginee...

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

# The dry unit weight of a soil sample is 14.8 kN/m3. Given that Gs = 2.72 and w = 17%, determine:a. Void ratiob. Moist unit weightc. Degree of saturationd. Unit weight when the sample is fully saturated

(a)

To determine

Calculate the void ratio of soil.

Explanation

Given information:

The dry unit weight of soil (γd) is 14.8kN/m3.

The moisture content (w) is 17%.

The specific gravity of the soil solids (Gs) is 2.72.

Calculation:

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

Calculate the void ratio (e) using the relation.

e=Gsγwγd1

Substitute 2

(b)

To determine

Calculate the moist unit weight of soil.

(c)

To determine

Calculate the degree of saturation.

(d)

To determine

Calculate the saturated unit weight of soil.

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