Chapter 3, Problem 3.3P

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9th Edition

Braja M. Das + 1 other

ISBN: 9781305970939

Textbook Problem

Refer to Problem 3.2. For a unit volume of the soil, determine the various quantities of the phase diagram shown in Figure 3.13.

**Figure 3.13**

**3.2** The moist unit weight of a soil is 17.8 kN/m^{3} and the moisture content is 14%. If the specific gravity of the soil solids is 2.69, calculate the following:

**a.** Dry unit weight

**b.** Void ratio

**c.** Degree of saturation

To determine

Calculate the weight and volume of the soil quantities.

Explanation

**Given information:**

The moist unit weight of soil

The moisture content

The specific gravity of the soil solids

**Calculation:**

Consider the total volume of the soil

Consider the unit weight of water

Calculate the dry unit weight of the soil

Substitute *w*.

Calculate the void ratio of the soil

Substitute

Calculate the degree of saturation

Substitute *w*, *e*.

Calculate the weight of soil solids

Substitute *V* and

Hence, the weight of soil solids

Calculate the weight of water

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