Chapter 10, Problem 10.21P

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9th Edition

Braja M. Das + 1 other

ISBN: 9781305970939

Textbook Problem

Refer to Figure 10.48. If *R* = 4 m and *h _{w}* = height of water = 5 m, determine the vertical stress increases 2 m below the loaded area at radial distances where

Circular contact area of radius *R* on the ground surface

**Figure 10.48**

To determine

Calculate the increase in vertical stress

Explanation

**Given information:**

The radius of the storage tank

The maximum height of water

The depth

The radial distances

**Calculation:**

Consider the unit weight of water

Calculate the intensity of pressure

Substitute

Calculate the increase in vertical stress

Here,

Calculate the depth to radius ratio

Substitute *z* and *R*.

For the radial distance

Calculate the ratio

Substitute *r* and *R*.

Similarly calculate the remaining values and tabulate as in Table 1.

Calculate the value of

Refer Table 10.8 “Variation of

Take the value of

Take the value of

Calculate the value of

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