Chapter 15, Problem 15.19P

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9th Edition

Braja M. Das + 1 other

ISBN: 9781305970939

Textbook Problem

Refer to Problem 15.18. What is the critical height of the slope? What is the nature of the critical circle?

**15.18** Refer to Figure 15.12. Determine the height of a slope (1 vertical to 3 horizontal) in saturated clay with an undrained shear strength of 1250 lb/ft^{2} and a unit weight of 122 lb/ft^{3}. The desired factor of safety against sliding is 2.75. Given is the depth function, *D* = 2.0.

To determine

Find the maximum height of a slope and the nature of the critical circle.

Explanation

**Given information:**

The undrained cohesion

The unit weight

The factor of safety

The inclination

The depth function *D* is 2.0.

**Calculation:**

Determine the inclination angle

Determine maximum height of the slope using the formula.

Here, *m* is the stability number.

Refer Figure (15.12) “Plot of stability number against slope angle” in the text book.

Take the stability number for the inclination

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