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Geotechnical Engineering
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Foundation Bearing Failure Modes and Capacities
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Bearing Capacity Calculator - Meyerhof Approach
Code source
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Bearing Capacity Calculator - Terzaghi
Bearing capacity
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Weight to Volume relationships in soils
Soil Sample
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Mohr's Circle for 2D Stresses
2D Mohr's
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3D Mohr's Circle
3D Mohrs
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Products & Materials
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Wood - Densities of Various Species and Mass Calculator
Wood - Densities of Various Species
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Maths Calculations
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Square, Cube, Square Root and Cubic Root Calculator
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Pythagorean Theorem Calculator
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Determine the Length Of a Side
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Triangle Angle Calculator
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Equilateral Triangle Calculator
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Right Triangle Calculator
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Heron's Formula Calculator
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Calculate Arc Length and Sector Area
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Circle Dimension Calculator
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Cube Surface Area & Volume Calculator
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Dodecahedron: Surface Area & Volume
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Volume & Surface Area of Cylinder Calculator
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Calculate Sphere Surface Area And Volume
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Hexadecimal to Binary Converter
Binary Spreadsheet
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Prime Number Checker
Prime Number Spreadsheet
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Poisson Distribution Calculator
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Harmonic Mean Calculator
Code source
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Tangential Angle Method for setting out circular curves
Code source (1)
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Harmonic Number Calculator
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Slope and Gradient Calculator
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Polar-Cartesian Coordinate Converter
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Function Plotter
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Euler Line Calculator
Euler Line
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Convolution Calculator
Convolution
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Physics Calculations
Relativity and Quantum Mechanics
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Energy Mass Equivalency
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Statics
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Slenderness Ratio Calculator
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Moment of Inertia Calculators
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Moment of Inertia Calculator: Solid Rectangular Section
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Moment of Inertia Calculator: Rectangular Hollow Section (SHS/RHS)
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Moment of Inertia Calculator: Solid Circular Section
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Moment of Inertia Calculator: Circular Hollow Section
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Moment of Inertia Calculator: I Beam
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Moment of Inertia Calculator: T Section
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Moment of Inertia Calculator: Angle Section
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Moment of Inertia Calculator: Channel Section
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Moment of Inertia Calculator: Triangular Section
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Moment of Inertia Calculator: Trapezoidal Area Section
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Hooke's Law
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Radius of Gyration in Structural Engineering
aisc-shapes-database-v160-all_sects
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Centre of Mass Calculator
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Centre of Gravity Calculator
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Stress Calculator
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Strain Calculator
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Elastic Section Modulus Calculator
aisc-shapes-database-v160-all_sects
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C-Channel Shape Elastic Section Modulus Calculator
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Diamond Shape Elastic Section Modulus Calculator
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Hollow Rectangle Square Elastic Section Modulus Calculator
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Hollow Round Elastic Section Modulus Calculator
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Circle Round Elastic Section Modulus Calculator
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I Beam Elastic Section Modulus Calculator
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Rectangle Elastic Section Modulus Calculator
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Mass Moment of Inertia
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Solid Cylinder - Central Axis
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Solid Cylinder - Diameter
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Cuboid
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Hoop - Central Axis
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Hoop - Diameter
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Solid Sphere
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Hollow Sphere
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Rod - Centre Normal Axis
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Rod - End face Axis
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Regular Tetrahedron
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Regular Octahedron
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Right Solid Circular Cone
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Right Hollow Circular Cone
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Torus
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Torsion of Shafts
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I-Section Shaft Torsion
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C-Channel Section Shaft
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Hexagon Shaft Torsion
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Square Shaft Torsion
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Rectangle Shaft Torsion
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Ellipse Shaft Torsion
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Hollow Cylinder Shaft Torsion
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Solid Cylinder Shaft Torsion
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Rectangle Hollow Shaft Torsion
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Triangle Shaft Maximum Allowable Torsion
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Shear Modulus Calculator
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Relationship between Young's modulus, bulk modulus and Poisson’s ratio
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Steel Wire Tension Calculator
Code source
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Poisson Ratio Calculator
Poisson's Ratio
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Mass Timber Self-weight Calculator
Code source
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Wood Density Calculator
wood information
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Wood Moisture Content Calculator
wood moisture calc
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Wood Specific Gravity Calculator
wood information
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Wood Shrinkage Calculator
wood information
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Dynamics
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Potential Energy Calculator
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Freefall Height Calculator
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Freefall Velocity Calculator
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Acceleration vs. Velocity equations
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Rotational Kinetic Energy Calculator
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Angular Velocity Calculator
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Work Calculator
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Impulse and Momentum Calculator
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Force Due To Acceleration
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Kinetic Energy Calculator
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Pendulum Calculator
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Simple Harmonic Motion Calculator
Code source
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Frequency of a Simple Harmonic Motion Calculator
Code source
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Time Period of a Simple Harmonic Motion Calculator
Code source
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Damped Harmonic Motion Energy Loss Calculator
Code source
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Centripetal Force Calculator
Centripetal Force-Acceleration Calculator
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Velocity of a Simple Harmonic Motion Calculator
Code source
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Longitudinal Vibration of Rods Calculator
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Dunkerley’s Method for Beam Vibration Calculator
Code source
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Acceleration of a Simple Harmonic Motion Calculator (related to the displacement)
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Angular Acceleration Calculator
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Acceleration of a Simple Harmonic Motion Calculator
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Average Angular Acceleration Calculator
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Total Harmonic Distortion (THD) Calculator
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Displacement of Harmonic Motion Calculator
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Astrophysics
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Orbital Mechanics Calculator
Orbital Mechanics
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Kepler's First Law Calculator
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Kepler's Third Law Calculator
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Y-coordinate of Keplerian Orbit
Code source
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Gravitational Force Calculator
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Acoustics and Optics
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Lightning & Thunder Distance Calculator
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Snell's Law Calculators
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Prism Refraction Angle Calculator
Snell's Law Calculator
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Formula 2 - Angles and Velocities
Snell's Law Calculator
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Formula 1 - Angles and Indices
Snell's Law Calculator
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Formula 3 - Angles and Wavelengths
Snell's Law Calculator
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Thermodynamics and Fluid Dynamics
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Specific Heats of Solids and Heat Transfer Calculator
Solids - Specific Heats
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Pressure Calculator
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Bernoulli Calculator
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Bernoulli Equation Calculator: Volume Flow Rate
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Bernoulli Mass Flow Rate Calculator
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Hot Air Balloons - Calculating Lifting Force
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Froude Number Calculator: Open Channel Flow
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Air Density and Specific Weight Calculator
Density and Specific Weight
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Total and Partial Pressure Calculator
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Magnetic Prandtl Number Calculator
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Reynolds Number Calculator
Code source (3)
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Code source (2)
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Code source (1)
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Code source
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Magnetic Reynolds Number Calculator for eddy current braking
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Magnetic Reynolds Number Calculator
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Knudsen Number Calculator
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Reynolds Number Calculator (for motion of a viscous fluid)
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Péclet Number Calculator
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Péclet number (for heat transfer using Reynolds number)
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Péclet number (for mass transfer using Reynolds number)
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Richardson Number Calculator
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Bejan Number Calculator
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Drag Force and Drag Coefficient Calculator
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Density, Specific Weight and Specific Gravity Calculator
Calculating Density, Specific Weight and Specific Gravity
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Mach Wave Angle Calculator
Code source
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Diffusion Rate Calculator
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Electrical Engineering
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DC Power Circuit Calculator
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Ohm's Law To Calculate Voltage In a Circuit
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Inductive Reactance Calculator
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Capacitive Reactance Calculator
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Full Load Current Calculator
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Generator Fault Current Calculator
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Generator Load Current Calculator
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Transformer Full Load Current and Turns Ratio Calculator
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Transformer Short Circuit Calculation
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Short Circuit Current Calculation For Cable AS/NZS 3008
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Battery Capacity Calculator
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3-Phase Power Calculator
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Wire Voltage Drop Calculator to AS/NZS 3008
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AC Induction Motor Speed Calculator
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AC Current Calculator (3Ph, 1Ph)
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Electric Motor Torque Calculator
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Electricity Bill Calculator
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Arc Flash Calculator
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RLC Circuit Calculator
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Maximum Demand Calculator to AS/NZS 3000
MAXIMUM DEMAND CALC - AS3000
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Energy Optimisation Calculator
Code source
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Construction Calculations
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Truck Bed Volume and Weight Calculator
Code source
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Calculate Cement, Sand & Aggregate Quantity in Concrete
Calculate Cement, Sand & Aggregate Quantity for Concrete
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Water Tank Capacity Calculator
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Rebar Weight Calculator
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Civil Engineering
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Bushfire Attack Level Calculator to AS 3959-2018
Bushfire Attack Level Calculator to AS 3959-2018
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Road Base Calculator
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Structural Engineering
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Beam Analysis Calculators
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Single-Span Beam Analysis
Single-Span Beam Analysis
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Multi-Span Beam Analysis Tool
Code source
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Column Buckling Calculator
OneSteel Column
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Column Buckling Calculator
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🇦🇺
AS/NZ
Timber Joints to AS1720.1
Timber Screwed Joint Designer to AS 1720.1
Timber Screwed Joint Designer to AS1720
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Code source
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Timber Nailed Joint Designer to AS 1720.1
Timber Nail Connections
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Code source
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Timber Bolt Joint Designer to AS 1720.1
Timber Bolted Connections
No sub pages
Code source
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Concrete Beam Designer to AS3600
CT - RC Beam Design to AS3600
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Bolt Group Calculator to AS 4100
Bolt Group - AS4100 - Fixed
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Fillet Weld Group Calculator to AS4100
Weld Group - AS4100 (Example)
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Steel Beam and Column Designer to AS4100
CT - Standard Steel Section Capacity
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Timber Beam Calculator to AS1720.1
CT - Timber Member Design to AS17201
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Timber Column Calculator to AS1720.1
CT - Timber Column Design to AS17201
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Concrete Slab-on-grade Designer to AS3600
Concrete Slab on Grade Design to AS3600-2018
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Concrete Rectangular Footing Designer to AS3600
Concrete Footing Design to AS3600-2018
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Concrete Column Designer to AS3600
CT - RC Column Design to AS3600
No sub pages
Neutral Axis Calculator: RC Section to AS3600
Code source (1)
No sub pages
Code source
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Reinforcement Development Length Calculator to AS3600
MInimum Reinforcement Development and Lap Length - AS3600
No sub pages
Concrete Punching Shear Calculator to AS3600
231204-AS3600-slab_punching_shear
No sub pages
Truss Analysis and Design
2D truss input
No sub pages
Code source
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Timber Strut Designer to AS1720.1
CT - Timber Column Design to AS17201
No sub pages
Concrete Wall to AS3600
Input
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Code source (1)
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Code source
No sub pages
Concrete Slabs to AS3600
Concrete Two-way Slab Calculator to AS3600
Lists
No sub pages
Code source
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Concrete Flat Slab Calculator to AS3600
Lists
No sub pages
Code source
No sub pages
📓
Design Guide: Concrete Slabs to AS3600
No sub pages
Concrete One-way Slab Calculator to AS3600
Lists
No sub pages
Code source
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Steel Web Plate Connection to AS4100
Code source (1)
No sub pages
Code source
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Lists-CleatConnection
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Concrete Shear Wall to AS3600
Input
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Code source (1)
No sub pages
Code source
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Concrete Retaining Wall to AS4678
Code source
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Input
No sub pages
Steel Moment End Plate Connection to AS4100
Code source (1)
No sub pages
Code source
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Lists-EndPlateConnection
No sub pages
Steel Flexible End Plate Connection to AS4100
Code source (1)
No sub pages
Code source
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Lists-EndPlateConnection
No sub pages
🇪🇺
Europe
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Seismic Spectrum Calculator to EC8
Eurocode_8
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Steel Section Designer to EC3
Eurocode_Section_Analysis_SingleForces_00
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Timber Beam Calculator to EC5
Design+Template+-+Timber+-+Rafters+and+joists+A1
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Elastic Critical Moment Calculator for Lateral Torsional Buckling to EC3
Eurocode_Section_Analysis_Combined_00
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Steel Base Plate Designer to EC3
European & UK Steel Section Catalogue_combined (1)
No sub pages
Code source
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Concrete One-Way Slab Designer to EC2
Code source
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Concrete Corbel Designer to EC2
Design of Corbel based on Eurocode_etc_rev1
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🇺🇸
US
Steel Beam and Column Designer to AISC 360
CT - Steel Beam and Column Design to AISC
No sub pages
Wind Loading Calculator to ASCE 7-10
Wind Load (Low-Rise)
ASCE710W_v2_4
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Wind Load (Open Building)
ASCE710W_v2_4
No sub pages
Wind Load (Roof Components & Cladding)
ASCE710W_v2_4
No sub pages
Wind Load (Wall Components & Cladding)
ASCE710W_v2_4
No sub pages
Wind Load (Any Height)
ASCE710W_v2_4
No sub pages
ASCE710W_v2_4
No sub pages
Steel Baseplate Designer to AISC 360
baseplate
No sub pages
Concrete Slab-on-grade Calculator to ACI 360R-10
CONCRETE SLAB ON GRADE - CT
No sub pages
Concrete Rectangular Beam Calculator to ACI 318-19 (IMP)
RC Rectangular Beams
No sub pages
Concrete Rectangular Spread Footing Designer to ACI
CT - Rectangular Footing (16 loads) - CT
No sub pages
CT - Unsymmetrical Footing
No sub pages
Purlin and Girts Size Calculator to AISI
Cee section shape
Code source
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Purlin and Girt Calc CT
No sub pages
Zed section shape
Code source
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Purlin and Girt Calc CT
No sub pages
Concrete One-way Slab Designer to ACI318
CT - RC Slab Design to ACI318
No sub pages
Concrete Column P-M Diagram Calculator to ACI
Code source (2)
No sub pages
Load Table
No sub pages
Code source (1)
No sub pages
Code source
No sub pages
CLT Properties Calculator to ANSI/APA PRG 320
CLT Properties Data
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Design Response Spectrum to ASCE 7
Design Response Spectrum to ASCE 7-16
Tablas
No sub pages
Code source
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Two-Period Design Response Spectrum to ASCE 7-22
Tablas
No sub pages
Code source
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Composite Slab to ACI 318
Code source
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CompositeSlab
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Composite Beam to AISC 360
Code source (1)
No sub pages
Code source
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aisc-shapes-W
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Concrete Shear Wall to ACI 318
Code source (2)
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Reinforcement
No sub pages
Code source (1)
No sub pages
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Beam Analysis using Anastruct
Code source
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Concrete Column P-M Diagram Calculator
Code source (1)
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Code source
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Beam Analysis using Macaulay's Theorem
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Beam Analysis Calculator for simply supported beam with point moment
Code source
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Beam Analysis Calculator for cantilever beam with point moment
Code source
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Beam Analysis Calculator for simply supported beam with trapezoidal load
Code source
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Beam Analysis Calculator for simply supported beam with triangular load
Code source
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Beam Analysis Calculator for cantilever beam with triangular load
Code source
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Beam Analysis Calculator for cantilever beam with point load
Code source
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Beam Analysis Calculator for simply supported beam with UDL
Code source
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Beam Analysis Calculator for cantilever beam with UDL
Code source
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Beam Analysis Calculator for cantilever beam with trapezoidal load
Code source
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Beam Analysis Calculator for beam with multiple loads
Code source
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Beam Analysis Calculator for simply supported beam with point load
Code source (1)
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2D Truss Analysis using OpenSeesPy
2D truss input
No sub pages
Code source
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Sample Project
Code source
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Beam Analysis Calculator - Beam VC
Code source
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Concrete Column Designer to AS3600
CT - RC Column Design to AS3600
No sub pages
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Concrete Beam Designer to AS3600 - Beam VC
Code source
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CT - RC Beam Design to AS3600
No sub pages
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Concrete Rectangular Footing Designer to AS3600
Concrete Footing Design to AS3600-2018
No sub pages
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Mechanical Engineering
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Air Duct Velocity Calculator
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Buoyancy Force Calculator
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Heat Transfer Calculator
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Static Pressure Calculator
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Dynamic Pressure Calculator
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Room Ventilation Calculator: Area Method
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🛩️
Mach Number Calculator
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Volumetric Efficiency Calculator
Volumetric Efficiency of an ICE
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Duct Pressure Drop Calculator
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Room ventilation calculator: Occupancy Method
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Log Mean Temperature Difference (lmtd) Calculator
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Log Mean Temperature Difference in Counter Flow Heat Exchangers
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Articles & Resources
⚒️
Engineering
🧭
General
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Engineering Calculation Template – Detailed Guide
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🤷
No more engineers? Understanding Australia’s engineering skills shortage
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📐
Quality control in engineering calculations using Units
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Engineering Design Guide Articles
📓
Design Guide: Trusses
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Common Truss Types
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Truss Analysis
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Steps for Designing Truss Members to Australian Standards
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📓
Design Guide: Shear Wall to Australian Standards
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📓
Design Guide: Shear Wall to ACI Standards
No sub pages
📓
Design Guide: Pad Footings
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📓
Design Guide: Purlins and Girts for Structural Support in Buildings
No sub pages
📓
Design Guide: Structural Load Calculations
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📓
Design Guide: RC Staircase
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📓
Design Guide: Limit State Design of steel members to AS4100
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📓
Design Guide: Steel Bracing Systems
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Steps for Designing Steel Bracing - General Guide
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Steel Bracing Design For Limit State
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Steps for Designing Steel Bracing to Australian Standards
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📓
Design Guide: Concrete Footing to AS3600
No sub pages
📓
Design Guide: Timber Members
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Comparison of Current Timber Design Standards
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National Design Specification For Wood Construction 2018
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Timber Design Standards - Eurocode 5
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Timber Design Standards - AS1720 and AS1684
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🏢
Structural Engineering Articles
👍
Steel Design Rules of Thumb for Structural Engineers
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Cement 101: What you need to know about this major construction material and it’s alternatives
New Microsoft Excel Worksheet
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High strength structural steel and Its Properties
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❓
Essential Knowledge for Structural Engineers: Skills and Expertise
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🏟️
Australia's Top Stadiums: Engineer's Perspective
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OpenSeesPy vs ETABS: 2D Frame Modal Analysis Comparison
Code source (1)
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Code source
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Get started with OpenSees on CalcTree
Code source
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Mechanical Engineering Articles
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Importance of Mechanical Engineering Calculation Templates
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Electrical Engineering Articles
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Resistors in Electrical Circuits: A Beginner's Guide
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Sustainability
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Engineering Designs & Codes
🏡
How Passive House can improve building energy efficiency
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Sustainable Materials in Civil Engineering
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Hempcrete: Building Smart, Green, and for the Future
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Sustainability and mass timber construction: top of mind and leading edge
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Top 5 Innovative & Sustainable Materials that should be mainstream in the construction industry
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Low Heat Cement 101 And Its Alternatives
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Embodied Carbon
🌳
10 ways to reduce embodied carbon in our built environment
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How smarter engineering designs can help achieve a future without embodied carbon
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Physics
🔥
Thermodynamics
🔥
Intro to Thermodynamics
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Brayton Cycles
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Brayton Cycle Calculator
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Brayton Cycle With Regeneration Calculator
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Brayton Cycle With Reheater Calculator
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Dual Combustion Cycle
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Duel Combustion Cycle Calculator
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Diesel Cycle
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Diesel Cycle Calculator
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Power Cycles: The Carnot and Otto Cycle
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Carnot Cycle Calculator
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Otto Cycle Calculator
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Heat Engine
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Heat Engine Calculator
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Refrigerator
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Refrigerator Calculator
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Heat Pumps
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Heat Pump Calculator
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Types of Pulleys & Calculators
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Logic Gates explained with calculators
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Matrix Algebra and its applications in Engineering and Physics
Matrix Algebra Operations
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🎓
Fundamentals
🎓
Beam Analysis and Design Fundamentals
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Fundamentals: Newton’s 3 Laws of Motion
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Fundamentals: Second Moment of Inertia
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Energy–momentum relation
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Energy–momentum Relation Calculator
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Applications of Fourier Series in Signal Processing and Engineering
Fourier
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Construction
🚇
Megaproject Spotlight: Constructing the World’s Longest Railway Tunnel
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Modernism & Mishaps in Mega Project Management
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Lessons from the Tacoma Bridge Collapse: Avoiding Historic Construction Failures
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Lessons from Historic Construction Failures: Tower of Pisa and Beyond
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Mathematics
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Partial derivatives
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Probability and Statistics, including Distributions and Hypothesis Testing
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17 Of The Most Important Equations You'll Ever Learn
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Vector Calculus and its Applications in Science
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Integral and Trigonometric Relationships
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Technology
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The Rise of Generative AI And Its Challenges
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ChatGPT Challenges in Engineering Data Calculation
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Construction industry challenges: Common Data Environments
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Importance of data integration for the construction industry
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Why Cloud-Based Software is the Future of the Construction Industry
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Civil Engineering Software To Transform Your Calculations
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Transform Your Python Script into a Web App with CalcTree: A Step-by-Step Guide
European & UK Steel Section Catalogue_combined (1)
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Streamlining Your Workflow: How to Connect Spreadsheets and Python Scripts with CalcTree
Timber Nail Connections
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Embedding Spreadsheet Values in Reports with CalcTree
Structural Embodied Carbon Calculation
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Transform Your Engineering Spreadsheets into Web Apps with CalcTree: A Step-by-Step Guide
CT - RC Column Design to AS3600
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Enhancing Civil Engineering Calculations in Chatbots with CalcTree API Integration
Code source
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Guides & Support
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Spreadsheets
a_basic_spreadsheet
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Python
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Linking parameters
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Add Content
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Headings, Toggles, Lists and Columns
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LaTex equations
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Math formula
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Create Parameters
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Link Parameters
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Units of measurement
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Spreadsheets
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Quick start
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Upload a Spreadsheet
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Spreadsheet Parameters
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Book1
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Spreadsheet Tables
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Edit Spreadsheets on CalcTree
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Python
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Quick start Python
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Run Python Scripts
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Use Parameters with Python
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Units in Python
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Python Tables
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Python Libraries List
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Python Charts
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Python Charts Style Guide
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Grasshopper
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API
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Print report
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Column Buckling Calculation Report
OneSteel Column
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Column Buckling Calculator
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Why contech needs more product-led growth companies
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Contech is the new fintech: Why it’s time to get in!
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Mission
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CalcTree’s mission - Bringing engineering, designs and calculations together
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Embracing a Sustainable Existence on Planet Earth And Beyond
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Check out our CEO's 'Startup Daily' interview!
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Culture
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Interning at CalcTree
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A window into CalcTree’s values and culture
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Work-Life Balance is a top priority at CalcTree - Check out our Co-Founder Tim Rawling’s ‘Balance the Grind’ Interview for his thoughts on it
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Meet the founders behind CalcTree
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Engineering Internships (Rolling basis)
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CalcTree joins Suffolk Technologies Boost Program
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Meet the investors behind CalcTree
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We've secured Antler backing!
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CalcTree benefits: reduce risk
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CalcTree benefits: accelerate innovation
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COMMUNITY CALCS
Estados de Vigas de Concreto
Code source
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Bust Common Myths About Java Programming
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Tensile Strength and Capacity Control of the W-Shape Sections According to AISC 360-16
AISC
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Concrete Cylinder Strength Vs Cube Strength
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Earthquake Design Action Calculation
Z
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d
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Annual Probability of Exceedance
KP
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Sıvılaşma Verileri Tablosu
-hepsi bir sayfada-
GeoProje - SıvılaÅma - TBDY - düzenlendi
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Grafikler
GeoProje - Sıvılaşma - TBDY
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Korelasyon Katsayıları ve Diğer Parametreler (CS,CB,CE,CR,CN,CM,α,β)
GeoProje - Sıvılaşma - TBDY
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Deprem ve Dinamik Özellikler (SDS,τdeprem,CRRM7.5)
GeoProje - Sıvılaşma - TBDY
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Gerilme ve Deformasyon Özellikleri (σ'vo,rd,IDI,εv)
GeoProje - Sıvılaşma - TBDY
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Zemin Direnci ve Dayanımı (SPT-N, N1,60, N160f, CRRM7.5,τR,τdeprem,Fα,)
GeoProje - Sıvılaşma - TBDY
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Zemin Fiziksel Özellikleri (Derinlik,γn,γw,G.S.,γlim,γmax,S)
GeoProje - Sıvılaşma - TBDY - düzenlendi
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Proje İle İlgili Bilgiler (Proje Adı, İl/İlçe, Ada, Parsel, SK-1, Y.A.S.S., Temel Alt Kotu)
GeoProje - Sıvılaşma - TBDY - düzenlendi
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GeoProje - Sıvılaşma - TBDY - düzenlendi
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Concrete Column Designer to AS3600
CT - RC Column Design to AS3600
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EM Wave Propagation Calculator
Code source
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section properties with units
Code source (2)
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Code source (1)
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Forward Kinematics of Robotic Arm with 6 Degrees of Freedom
DH_P
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İKSA YAPILARI PROJELENDİRME HİZMET BEDELİ (2024)
iksa teklif fiyat hesabı-2023
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GEOTEKNİK RAPOR (EK-B) ASGARİ HİZMET BEDELİ (2024)
Geoteknik Rapor (ZTE) Teklif-2023
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ZEMİN İYİLEŞTİRME/DERİN TEMEL PROJELENDİRME ASGARİ HİZMET BEDELİ (2024) (İMO)
Zemin İyileştirme-Derin Temel Teklif-2023
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Projectile motion
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Dezi et. al (2010)
Kinematik_Analitik_BoredPile
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Projectile motion
Code source
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Templates
Welcome to CalcTree's template library!
Here you can find pre-built calculation and design templates from all kinds of different disciplines and areas. You can use them as is or duplicate them into your own workspaces and make them your own!
Engineering
Structural Engineering
Civil Engineering
Geotechnical Engineering
Mechanical Engineering
Electrical Engineering
General
Maths Calculations
Physics Calculations
Industries
Construction Calculations
Products & Materials