whereE,= modulus of elasticity of soilB = foundation widthEp = modulus of elasticity of foundation materialIp = moment of inertia of the cross section of the foundationMsPoisson's ratio of soilFor most practical purposes, Eq. (10.45) can be approximated asE,kB(1 – µ)(10.46) For a 2.0 m wide and 0.40 m thick beam on elastic founda-tion, determine the coefficient of subgrade reaction k usingEqs. (10.45) and (10.46), assuming the following param-eters: E, = 30 MN/m², Ep = 30,000 MN/m², µ, = 0.25.%3D

Solution : We know that, k=0.65EsB4EFIF 12 EsB1-μs2 Where, Es=Modulus of elasticity of soil B =…

For a 2.0 m wide and 0.40 m thick beam on elastic founda- tion, determine the coefficient of subgrade reaction k using Eqs. (10.45) and (10.46), assuming the following param- eters: E, = 30 MN/m², Ep = 30,000 MN/m², µ, = 0.25. %3D

For a 2.0 m wide and 0.40 m thick beam on elastic founda- tion, determine the coefficient of subgrade reaction k using Eqs. (10.45) and (10.46), assuming the following param- eters: E, = 30 MN/m², Ep = 30,000 MN/m², µ, = 0.25. %3D

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Lateral Earth Pressure

Section: Chapter Questions

Problem 16.3P: The soil profile at a site is shown Figure P16.3. Find the total horizontal normal stresses at A and...

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Concept explainers

Pressure and Stress

Question

where
E,
= modulus of elasticity of soil
B = foundation width
Ep = modulus of elasticity of foundation material
Ip = moment of inertia of the cross section of the foundation
Ms
Poisson's ratio of soil
For most practical purposes, Eq. (10.45) can be approximated as
E,
k
B(1 – µ)
(10.46)

For a 2.0 m wide and 0.40 m thick beam on elastic founda-
tion, determine the coefficient of subgrade reaction k using
Eqs. (10.45) and (10.46), assuming the following param-
eters: E, = 30 MN/m², Ep = 30,000 MN/m², µ, = 0.25.
%3D

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