Example engineering calculations
Worked, unit-aware calculation worksheets across structural, mechanical, electrical and more. Open any example into your own workspace to edit and reuse. New to Calculeaf? Start with your first worksheet or the examples guide.
21 examples found
Spread Footing Bearing Pressure
Gross bearing pressure under a rectangular spread footing and the factor of safety against the allowable pressure.
Vertical Effective Stress
Effective vertical stress in soil from total stress and pore-water pressure.
Rankine Active Earth Pressure Coefficient
Active earth pressure coefficient from the soil friction angle.
Rankine Passive Earth Pressure Coefficient
Passive earth pressure coefficient from the soil friction angle.
Active Earth Thrust on a Wall
Total active earth thrust per metre of retaining wall.
Bearing Capacity (Cohesion Term)
Ultimate bearing capacity contribution from soil cohesion (Terzaghi).
Consolidation Settlement
Primary consolidation settlement of a clay layer from its compression index.
Darcy Seepage Velocity
Darcy (superficial) seepage velocity of water through soil.
Seepage Flow Rate
Seepage flow rate through a soil cross-section using Darcy’s law.
Soil Porosity
Porosity of a soil from its void and total volumes.
Void Ratio
Void ratio of a soil from its void and solid volumes.
Pile Skin Friction Capacity
The load a driven or bored pile can carry through side friction between its shaft surface and the surrounding soil.
Pile End-Bearing Capacity
The load a pile can carry at its tip, from the bearing capacity of the soil or rock beneath the pile base.
Pile Group Efficiency (Converse-Labarre)
The reduction in average per-pile capacity when piles are grouped closely together, due to overlapping stress zones between adjacent piles.
Infinite Slope Stability Factor of Safety (No Seepage)
The factor of safety against sliding on a plane parallel to an infinite (long, uniform) slope, with cohesion and friction resisting gravity-driven shear.
Coulomb Active Earth Pressure Coefficient
The active earth pressure coefficient for a cohesionless soil retained behind a wall, from the simplified Coulomb (Rankine-form) relation.
Dry Density from Wet Density and Water Content
The dry unit weight of a soil sample computed from its measured wet (bulk) unit weight and gravimetric water content.
Consolidation Time Factor
The dimensionless time factor governing the rate of primary consolidation settlement in a saturated clay layer.
Cyclic Stress Ratio for Liquefaction Screening (Simplified)
A simplified estimate of the earthquake-induced cyclic shear stress ratio used as the demand side of a liquefaction triggering assessment.
Terzaghi Bearing Capacity (Strip Footing)
The ultimate bearing capacity of a strip footing on cohesive-frictional soil from Terzaghi's classical three-term superposition equation.
Elastic Settlement of a Footing on Sand (Simplified)
An estimate of immediate elastic settlement for a footing bearing on sand, using bearing pressure, footing width, an influence factor, and soil modulus.