Rig Based Bearing Capacity Estimator

SR‑115 Rig Based Multi‑Strata Bearing Capacity Calculator

Rig Input Parameters
Depth (m)
Torque (kNm)
Crowd Force (kN)
RPM
Penetration Rate (mm/min)
Strata Selection
Soil / Rock Type	Cohesionless Sand Cohesive Clay Silty Sand / Sand with fines Gravel / Sandy Gravel Silt Silty Clay / Mixed Soil Weathered / Soft Rock Hard Rock
Design Parameters
Calibration Factor (k)
Factor of Safety

Engineering Basis:
• DRI derived from torque, crowd & penetration.
• DRI correlated to SPT‑N (field calibration required).
• Empirical bearing capacity correlations from geotechnical practice.
• Final design must be verified by borehole & load test.