Question

The value of kx for the elastic support of soil is given by which of the following expression?

(a) Kx = Cu A

(b) Kx = Cϴ Iy

(c) Kx = Cx A

(d) Kx = Cu Iy

I got this question in examination.

My enquiry is from Dynamic Analysis of Block Foundations topic in division Machine Foundations of Geotechnical Engineering II

Answer 1

Right option is (c) Kx = Cx A

For explanation: The values of Kx, Ky and Kϴy for the elastic support of soil are given by the following expressions:

For vertical motion: Kz = Cu A

For horizontal motion: Kx = Cx A

For rocking motion: Kϴy: Cϴ Iy.