Vertical Stress Ratio

Vertical Stress Ratio

With the Vertical Stress Ratio model, the shear strength at the base of each slice is determined by multiplying the effective vertical (overburden) stress by a constant K for the material.

 

 

• The effective vertical stress is computed from the total weight of each slice, and the pore pressure acting at the center of the base of each slice.
• The "vertical stress ratio" K is simply a constant, equal to the ratio of the shear strength to the vertical stress. (e.g. if K = 0.3, then the shear strength will be 30 % of the effective vertical stress.)