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...
Geotechnical
Darcy Flow and Hydraulic Gradient in Soil
Formulas and a worked example for hydraulic gradient, Darcy flux, volumetric flow and seepage velocity through soil.
Particle Size Distribution and Grading Coefficients
Formulas and worked examples for particle-size D-values, uniformity coefficient, curvature coefficient and logarithmic interpolation.
Effective Stress in Soil: Layered Calculation
A practical layered-soil calculation for total vertical stress, hydrostatic pore pressure and vertical effective stress.
Maximum Dry Density (MDD) in Civil Engineering
Learn what MDD means, how laboratory compaction testing determines MDD and OMC, and how relative compaction is checked in the field.
What Is Chainage in Civil Engineering?
Learn how chainage identifies locations along an alignment, how chainage notation is read, and how offsets are used in civil and geotechnica...
Pile Capacity
An overview of axial pile resistance, installation effects, pile groups, testing and geotechnical design inputs.
Braced Cuts (Excavation Support Systems)
How braced cuts support deep excavations, with apparent earth pressure diagrams and strut load calculation for sands and clays.
Bearing Capacity of Soil and Foundations
A practical overview of soil bearing capacity, failure mechanisms, investigation inputs and shallow-foundation design checks.
Slope Stability
An overview of slope failure mechanisms, groundwater, material strength and stability assessment methods.
Lateral Earth Pressure
An overview of active, at-rest and passive earth pressure, wall movement, groundwater and surcharge effects.
Shear Strength of Soil
The Mohr-Coulomb failure criterion, drained vs undrained behaviour, and the laboratory tests used to measure soil shear strength.