A column of a building is supported by an isolated square footing of 1.8m width. The footing is to befounded at a 1.2m below ground level in a deep layer of clayey sand having the following properties:c = 40 kPa, o = 15°, y = 17.1 kN/m³, Ysat=Determine the Ultimate bearing capacity (U.B.C) of the soil when the ground water table is at:20.3 kN/m³i. Ground levelii. 0.6m below ground leveliii. 1.0m below the base of the footingiv. 2.5m below the base of the footing.Use Terzaghi's equation.

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A column of a building is supported by an isolated square footing of 1.8m width. The footing is to be founded at a 1.2m below ground level in a deep layer of clayey sand having the following properties: c = 40 kPa, = 15°, y = 17.1 kN/m³, Ysat Determine the Ultimate bearing capacity (U.B.C) of the soil when the ground water table is at: i. Ground level ii. 0.6m below ground level iii. 1.0m below the base of the footing = 20.3 kN/m³

A column of a building is supported by an isolated square footing of 1.8m width. The footing is to be founded at a 1.2m below ground level in a deep layer of clayey sand having the following properties: c = 40 kPa, = 15°, y = 17.1 kN/m³, Ysat Determine the Ultimate bearing capacity (U.B.C) of the soil when the ground water table is at: i. Ground level ii. 0.6m below ground level iii. 1.0m below the base of the footing = 20.3 kN/m³

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter5: Ultimate Bearing Capacity Of Shallow Foundations: Special Cases

Section: Chapter Questions

Problem 5.11P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

A column of a building is supported by an isolated square footing of 1.8m width. The footing is to be
founded at a 1.2m below ground level in a deep layer of clayey sand having the following properties:
c = 40 kPa, o = 15°, y = 17.1 kN/m³, Ysat
=
Determine the Ultimate bearing capacity (U.B.C) of the soil when the ground water table is at:
20.3 kN/m³
i. Ground level
ii. 0.6m below ground level
iii. 1.0m below the base of the footing
iv. 2.5m below the base of the footing.
Use Terzaghi's equation.

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Step 1: due to Bartleby policy I solve the first 3 part of questions

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Step 2: for 15° the Terzaghi bearing constant

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Step 3: calculation according to given condition of ground water level

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