Submerged Stiff Clay

The following material properties need to be defined for the p-y curves to be created (Reese, et al., 1975):

• Strain Factor (E50) - strain corresponding to 1/2 the maximum principal stress difference. Typical values are provided below.
• Undrained Shear Strength
• k_s - refer to the theory manual for further description (typical values provided in the table below)

The diameter of the pile and depth into the soil has a direct impact as well. See the Lateral Pile Theory Manual for more information.

p-y curve for Stiff Clay with Water

REPRESENTATIVE VALUES OF E50 FOR OVERCONSOLIDATED CLAYS

Average undrained shear strength (kPa)	50-100	100-200	200-400
E50	0.007	0.005	0.004

REPRESENTATIVE VALUES OF KS FOR OVERCONSOLIDATED CLAYS

Average undrained shear strength (kPa)	50-100	100-200	200-400
ks (MN/m3)	135	270	540

For more information, see the Lateral Analysis Theory Manual.