Loads - force and torque, beams and columns

Beams and Columns

Deflection and stress, moment of inertia, section modulus and technical information of beams and columns

Area Moment of Inertia Converter

Convert Area Moment of Inertia units

Beam Support Forces Calculator

Calculate beam loads and support forces

Bollard Force

Bollard rope friction - load and effort force in the rope

Cable Loads

Force and tension in cables supporting uniformly loads

Center Mass

Calculate center mass position

Center of Gravity

Some common bodies and their center of gravity

Center of Gravity - Center of Buoyancy

Stability - center of gravity and center of buoyancy

Density, Specific Weight and Specific Gravity

An introduction to density, specific weight and specific gravity - formulas with examples

Energy Balance and Energy Ratio

Energy balance and energy payback ratio

Engineering Materials

Typical properties of engineering materials like steel, plastics, ceramics and composites


Static equilibrium is achieved when both resultant force and resultant moment equals to zero

Fibre-reinforced Polymer Composites

Mechanical properties of fibers used to reinforce polymer composites


Force - Newton's third law and acceleration

Force and Tension in a Rope due to Angle

Reduced load capacity in ropes, cables or lines - due to angle

Hooke's Law

Hooke's law - force, elongation and spring constant


Forces with levers

Mass and Weight

Mass and Weight - the Gravity Force

Modulus of Elasticity or Young's Modulus - and Tensile Modulus for common Materials

Young's Modulus - Tensile Modulus or Modulus of Elasticity - for steel, glass, wood and other common materials

Modulus of Rigidity

Shear Modulus or Modulus of Rigidity is the coefficient of elasticity for a shearing or torsion force

Moment of Inertia

Moment of Inertia (Mass Moment of Inertia) depends on the mass of the object, its shape and its relative point of rotation - Radius of Gyration

Moment of Section Conversions

Convert Moment of Section (Inertia) units

Poisson's Ratios Metals

Some metals and their Poisson's ratios

Screw Jacks

Screw jacks and effort force

Soil - Bearing Strength

Allowable load on soil

Steels - Endurance Limits and Fatigue Stress

Endurance limits and fatigue stress for steels


Stiffness is resistance to deflection


Stress is the applied force on a cross-sectional area

Stress and Deflections in Beams

Beams and shafts - deflection and stress calculators

Stress in Thick-Walled Tubes or Cylinders

Radial and tangential stress in thick-walled tubes or cylinders with closed ends - internal and external pressure

Stress, Strain and Young's Modulus

Stress is force per unit area - strain is the deformation of a solid due to stress

Stresses in Thin-Walled Tubes or Cylinders

Hoop and longitudinal stresses thin-walled tubes or cylinders

Thermal Expansion - Stress and Force

Stress and force with restricted thermal expansion

Torsion of Shafts

Torsion of solid and hollow shafts - Polar Moment of Inertia of an Area

Vector Addition

Online vector calculator - add vectors with different magnitude and direction

Wire Rope Slings

Sling angles - and influence on capacity

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