A 450 kN is transmitted by a column footing onto the surface through a square footing 1.5 m. on a side. Assuming that the force exerted on the underlying soil formation spreads on 2 vertical to 1 horizontal, evaluate the pressure exerted in footing on a soil 2.7 m. below it.

A 450 kN is transmitted by a column footing onto the surface through a square footing 1.5 m. on a side. Assuming that the force exerted on the underlying soil formation spreads on 2 vertical to 1 horizontal, evaluate the pressure exerted in footing on a soil 2.7 m. below it.

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 10.1P: Refer to the rectangular combined footing in Figure 10.1, with Q1 = 100 kip and Q2 = 150 kip. The...

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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 450 kN is transmitted by a column footing onto the surface through a
square footing 1.5 m. on a side. Assuming that the force exerted on the
underlying soil formation spreads on 2 vertical to 1 horizontal, evaluate
the pressure exerted in footing on a soil 2.7 m. below it.

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