Chapter 3, Problem 3.10P

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 void ratio of an undisturbed soil sample is 0.55 and the moisture content is 11%. If Gs = 2.68, determine:a. Moist unit weightb. Dry unit weightc. Degree of saturationd. Moisture content when the sample is fully saturated

(a)

To determine

Calculate the moist unit weight of soil.

Explanation

Given information:

The void ratio of undisturbed soil sample (e) is 0.55.

The moisture content (w) is 11%.

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

Calculation:

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

Calculate the moist unit weight of the soil (γ) using the relation.

γ=(1+w1+e)Gsγw

Substitute 11% for w, 0

(b)

To determine

Calculate the dry unit weight of soil.

(c)

To determine

Calculate the degree of saturation.

(d)

To determine

Calculate the moisture content when the sample is fully saturated.

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