Compaction Curve, MDD and OMC Calculation
Calculate dry density from compaction test points and estimate MDD and OMC using a controlled curve-fitting workflow.
Geotechnical
Geotechnical engineering resources covering soil mechanics, foundations, and site investigation.
Laboratory CBR Calculation
A controlled workflow for laboratory CBR calculation from test force and method-defined reference force.
Axial Pile Capacity: Shaft and Base Resistance
A method-neutral axial pile-capacity framework showing shaft resistance, base resistance, total resistance and key design controls.
Plate Load Test Calculations: Pressure and Modulus
Calculation guidance for plate contact pressure, load-settlement increments and modulus of subgrade reaction, including scale limitations.
Infinite Slope Stability Factor of Safety
Drained and undrained infinite-slope stability formulas with a worked example, assumptions and controls for engineering review.
Retaining Wall Stability Calculations
Calculation frameworks for retaining-wall sliding, overturning, eccentricity and base pressure, without prescribing design acceptance criter...
Lateral Earth Pressure: Rankine Coefficients and Forces
Formulas and worked examples for Rankine earth-pressure coefficients, lateral stresses, soil thrust, surcharge and water pressure.
Immediate Settlement of Shallow Foundations
An elastic immediate-settlement calculation framework for shallow foundations, with parameter controls and a worked example.
Consolidation Settlement and Time-Rate Calculations
Calculation frameworks for primary consolidation settlement, time rate and secondary compression, including assumptions and validation check...
Shallow Foundation Bearing Capacity Calculation
A calculation framework for shallow foundation bearing capacity, with factor selection, assumptions, checks and a worked example.
Critical Hydraulic Gradient and Hydraulic Heave
Calculate hydraulic gradient, critical gradient and a simple heave stability ratio, with clear limits for piping and internal erosion assess...
Footing Pressure and Eccentricity Calculations
Calculate average, maximum and minimum footing contact pressure from vertical load and moment, with clear full-contact and effective-area li...