Drilled Sand

The load-transfer curves presented below were developed by Reese and O’Neill (1988) based on the study of tests of drilled shafts end bearing vs settlement results.

Drilled Shafts in Sand Skin Friction (t-z) Load Transfer Curve

Drilled Shafts in Sand End Bearing (Q-z) Load Transfer Curve

For more information, see the Axial Analysis Theory Manual.