Answered: By considering the failure surfaces in…

By considering the failure surfaces in a vane shear test, show from the first principles that, for a rectangular vane, K = h + 3

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Natural Soil Deposits And Subsoil Exploration

Section: Chapter Questions

Problem 3.21P

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Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can sustain.

Question

By considering the failure surfaces in a vane shear test, show
from the first principles that, for a rectangular vane,
K =
h +
3

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