Borings indicate that at a Queens, NY site, the top 6 meters is a loose 2) , sand with a groundwater level at 3 meters below the ground surface. Below the sand is a 10 meter thick soft clay stratum. Assume sand unit weights are ymoist = 14 kN/cubic meter and ysat = 15 kN/cubic meter. Assume clay ysat = 19 kN/cubic meter. Calculate total, pore and effective stresses at 3, 12 and 16 meters deep.

Borings indicate that at a Queens, NY site, the top 6 meters is a loose 2) , sand with a groundwater level at 3 meters below the ground surface. Below the sand is a 10 meter thick soft clay stratum. Assume sand unit weights are ymoist = 14 kN/cubic meter and ysat = 15 kN/cubic meter. Assume clay ysat = 19 kN/cubic meter. Calculate total, pore and effective stresses at 3, 12 and 16 meters deep.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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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

Borings indicate that at a Queens, NY site, the top 6 meters is a loose
2) ,
sand with a groundwater level at 3 meters below the ground surface. Below the
sand is a 10 meter thick soft clay stratum. Assume sand unit weights are ymoist =
14 kN/cubic meter and ysat = 15 kN/cubic meter. Assume clay ysat = 19 kN/cubic
meter. Calculate total, pore and effective stresses at 3, 12 and 16 meters deep.

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