Answered: From the given soil profile, determine…

From the given soil profile, determine the effective stress at the point B. 5m + 5m 8m Dry Sand Saturated Sand A Saturated Clay B Ydy 15.60 kN/m³ Yaat = 19.60 kN/m³ Yaat 20.50 kN/m³ 12m

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.

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Transcribed Image Text:From the given soil profile, determine the effective stress at the point B. 5m + 5m 8m Dry Sand Saturated Sand A Saturated Clay B Ydy 15.60 kN/m³ Yaat = 19.60 kN/m³ Yaat 20.50 kN/m³ 12m

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Consider the soil profile shown in the figure below, and an initial groundwater depth of 5 feet below the ground surface. Assuming the soil above the water table is dry, then Ground Surface Ya = 115 Ib/ft G.= 2.65 5 ft SAND 15 ft Ysat = 120 Ib/ft3 e,- 1.1 C = 0.5 C, = 0.05 o- 2.8 ksf 15 ft CLAY ROCK a. The in-situ effective vertical stress in the middle of the clay layer is psf. b. If a uniform permanent load of 500 psf is applied on the ground surface, the estimated primary consolidation settlement of the clay layer is inches. c. If the groundwater table is lowered to the top of the clay layer at a final depth of 20 feet below the ground surface after the consolidation settlement in part (b) is completed, the effective vertical stress increase in the middle of the clay layer is psf.
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