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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 moist mass of 0.1 ft3 of soil is 12.5 lb. If the moisture content is 14% and the specific gravity of soil solids is 2.71, determine the following:

a. Moist unit weight

b. Dry unit weight

c. Void ratio

d. Porosity

e. Degree of saturation

f. Volume occupied by water

(a)

To determine

Calculate the moist unit weight of soil.

Explanation

Given information:

The volume (V) of the soil is 0.1ft3.

The moist mass (W) of the soil is 12.5lb.

The moisture content (w) is 14%.

The specific gravity of the soil solids (Gs) is 2.71.

Calculation:

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

γ=WV

Substitute 12

(b)

To determine

Calculate the dry unit weight of soil.

(c)

To determine

Calculate the void ratio of soil.

(d)

To determine

Calculate the porosity of soil.

(e)

To determine

Calculate the degree of saturation.

(f)

To determine

Calculate the volume of water.

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