Chapter 2, Problem 2.7P

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9th Edition

Braja M. Das + 1 other

ISBN: 9781305970939

Textbook Problem

Repeat Problem 2.4 with the following data.

**2.4** The following are the results of a sieve analysis.

**a.** Determine the percent finer than each sieve and plot a grain-size distribution curve.

**b.** Determine *D*_{10}, *D*_{30}, and *D*_{60} for each soil.

**c.** Calculate the uniformity coefficient *C _{u}*.

**d.** Calculate the coefficient of gradation *C _{c}*.

(a)

To determine

Calculate the percent finer than each sieve and plot a grain-size distribution curve.

Explanation

**Calculation:**

Calculate the total mass of the soil

Here,

Refer the given table for mass of soil retained in each sieve no.

Calculate the total mass of the soil as follows:

Calculate the cumulative mass retained on each sieve using the relation.

For mass 1

For mass 2

For mass 4

(b)

To determine

Calculate

(c)

To determine

Calculate the uniformity coefficient.

(d)

To determine

Calculate the coefficient of gradation.

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