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Principles of Geotechnical Enginee...

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

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Section
BuyFindarrow_forward

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 ratio

b. Moist unit weight

c. Degree of saturation

d. 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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