Three concentrated loads Ql = 255 kips, Q2 = 450 kips and Q3 = 675 kips act in one vertical plane and they are placed in the order Ql-Q2-Q3. Their spacings are 13 ft and 10 ft respectively. Determine the vertical pressure at a depth of 5 ft along the center line of footings.

Three concentrated loads Ql = 255 kips, Q2 = 450 kips and Q3 = 675 kips act in one vertical plane and they are placed in the order Ql-Q2-Q3. Their spacings are 13 ft and 10 ft respectively. Determine the vertical pressure at a depth of 5 ft along the center line of footings.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter17: Retaining Walls

Section: Chapter Questions

Problem 17.5P

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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.

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Three concentrated loads Ql = 255 kips, Q2 = 450 kips and Q3 = 675 kips act in one vertical
plane and they are placed in the order Ql-Q2-Q3. Their spacings are 13 ft and 10 ft respectively.
Determine the vertical pressure at a depth of 5 ft along the center line of footings.

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