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Weak Rock

The following material properties need to be defined (Reese & Nyman, 1978):

  • Uniaxial Compressive Strength
  • Reaction Modulus of Rock - can be taken from the initial slope of a pressuremeter curve or results of compressive tests of intact specimens
  • Rock Quality Designation (RQD) - borehole core recovery percentage
  • krm - Strain factor ranging from 0.0005 to 0.00005.

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 Weak Rock

p-y curve for Weak Rock

For more information, see the Lateral Analysis Theory Manual.

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