Sm Chapter VI

Chapter VI Effective stress concept

Specific objectives: To identify the difference between stresses in a solid material and particulate material. To identify the effect of presence of water on distribution of stresses in soils. To understand total stresses, effective and neutral stresses. To associate capillary phenomenon with soil material. To be able to work out analytically the implications of these concepts.

HAWASSA UNIVERSITY FACULTY OF TECHNOLOGY CIVIL ENGINEERING DEPARTMENT

SOIL MECHANICS-I CHAPTER-V EFFECTIVE STRESS CONCEPT 2007-08 MU JAGADEESHA

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Exercise problem A soil profile is shown in figure. P.5.1. calculate the values of σ,σ' and u at points A, B, C and D. plot the variation of σ,σ' and u with depth. Use the following data.

Layer no. Thickness in m Unit weight in kN/m3

Profile A I 1.5 γ d =17.6 II 1.8 γ sat =18.9 III 2.4 γ sat =19.7

Profile B I 1.5 γ d =15.7 II 3.0 γ d =18.2 III 2.7 γ d =19.2

Ground surface

Layer I Dry sand Layer II sand Layer III clay Layer IV Rock

B Ground water table

C

D


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Sm Chapter VI

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Transcript of Sm Chapter VI