8. If a rectangular foundation of dimension 2.5 m by 3.5 supporting a load of 900 kN is supported at a depth of 1.5 m below the soil described in num-ber 4, at what depth will the total stress be 250 kPa. Utilize 2–1 approximation to address this problem.

Solution: Givendata foundation of dimension = 2.5 x 3.5 m load = 900 kN depth below the soil = 1.5…

Answered: what depth will the total stress be 250…

Engineering

Civil Engineering

what depth will the total stress be 250 kPa.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Mat Foundations

Section: Chapter Questions

Problem 10.5P

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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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8. If a rectangular foundation of dimension 2.5 m by 3.5 supporting a load of 900 kN is supported at a depth of 1.5 m below the soil described in num-
ber 4, at what depth will the total stress be 250 kPa. Utilize 2–1 approximation to address this problem.

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