Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!


Loads - force and torque, beams and columns

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Beams and Columns

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

Area Moment of Inertia - Converter

Convert between Area Moment of Inertia units

Beam Loads - Support Force Calculator

Calculate beam load and supporting forces

Beams - Fixed at Both Ends - Continuous and Point Loads

Support loads, stress and deflections

Beams - Fixed at One End and Supported at the Other - Continuous and Point Loads

Support loads, moments and deflections

Beams - Supported at Both Ends - Continuous and Point Loads

Support loads, stress and deflections

Bollard Force

Rope friction around a pole - load and effort force in rope around a bollard

Cable Loads

Force and tension in cables with uniform loads

Center Mass

Calculate position of center mass

Center of Gravity

Bodies and their center of gravity

Center of Gravity and Buoyancy

Stability - center of gravity and center of buoyancy

Density, Specific Weight and Specific Gravity

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

Earth Pressure Acting on Basement Walls

Lateral earth pressure on basement walls

Effects of Low-Frequency Vibrations on Buildings

Effects of low-frequency vibrations on building constructions

Energy Balance and Energy Ratio

Energy balance and energy payback ratio

Engineering Materials

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


The force required to keep a system of forces in equilibrium

Fibre-reinforced Polymer Composites

Mechanical properties of fibers used to reinforce polymer composites

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Newton's third law - mass and acceleration

Force and Tension in 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


Use levers to excert forces

Mass and Weight

Mass and Weight - the Gravity Force

Mass Moment of Inertia

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

Modulus of Rigidity

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

Poisson's Ratio for Metals

Some metals and their Poisson's Ratio

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 force applied on cross-sectional area

Stress in Thick-Walled Cylinders - or Tubes

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

Stress in Thin-Walled Tubes or Cylinders

Hoop and longitudinal stress thin-walled tubes or cylinders

Stress, Strain and Young's Modulus

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

Support Reactions - Equilibrium

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

Thermal Expansion - Stress and Force

Stress and force when thermal expansion is restricted

Three-Hinged Arches - Continuous and Point Loads

Support reactions and bending moments

Torsion of Shafts

The torsion of solid or hollow shafts - Polar Moment of Inertia of Area


Common types of trusses

Vector Addition

Online vector calculator - add vectors with different magnitude and direction - like forces, velocities and more

Wire Rope Slings

Sling angle and influence on capacity

Young's Modulus - Tensile and Yield Strength for common Materials

Young's Modulus or Tensile Modulus alt. Modulus of Elasticity - and Ultimate Tensile and Yield Strength for steel, glass, wood and other common materials

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Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

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