Air Force Tool Box Designation

The Engineering ToolBox

Free tools and information for engineering and design of technical applications

Steel Pipes - Calculating Thermal Expansion Loops

Calculating and sizing steel pipe thermal expansion loops.

Air - Thermophysical Properties

Thermal properties of air at different temperatures - density, viscosity, critical temperature and pressure, triple point, enthalpi and entropi, thermal conductivity and diffusivity and more.

Water Supply Systems - Online Design Application

Free online tool for designing water supply systems in buildings.

Thermal Expansion - Linear Expansion Coefficients

Linear temperature expansion coefficients for common materials like aluminum, copper, glass, iron and many more.

Hot Air Balloons - Lifting Weight Calculator

Calculate hot air ballons lifting forces.

Air - Psychrometric Chart for Standard Atmospheric Conditions - Imperial Units

Psychrometric chart for air at barometric pressure 29.921 inches of Mercury and temperature ranging 20^oF to 120^oF.

UTM to Latitude and Longitude Converter

Free online UTM to Latitude and Longitude coordinates converter.

Water - Thermophysical Properties

Thermal properties of water at different temperatures like density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more.

Radians vs. Degrees

Radian is the SI unit of angle. Convert between degrees and radians. Calculate angular velocity.

Miter Saw - Calculate Sawing Angle

Free online tool to calculate miter saw protractor angles.

Friction - Friction Coefficients and Calculator

Friction theory with calculator and friction coefficients for combinations of materials like ice, aluminum, steel, graphite and many more.

Young's Modulus, Tensile Strength and Yield Strength Values for some Materials

Young's Modulus (or Tensile Modulus alt. Modulus of Elasticity) and Ultimate Tensile Strength and Yield Strength for materials like steel, glass, wood and many more.

Thermal Conductivity Coefficients for common Solids, Liquids and Gases

Thermal conductivity coefficients for some selected products like insulation materials, aluminum, asphalt, brass, copper, steel, gases and more.

Water - Density, Specific Weight and Thermal Expansion Coefficients

Definitions, online calculator and figures and tables with water properties like density, specific weight and thermal expansion coefficient of liquid water at temperatures ranging 0 to 360°C (32 to 680°F).

Numbers - Square, Cube, Square Root and Cubic Root Calculator

Calculate square, cube, square root and cubic root. Values tabulated for numbers ranging 1 to 100.

W-Beams - American Wide Flange Beams

Dimensions of American Wide Flange Beams ASTM A6 (or W-Beams) - Imperial units.

Viscosity - Absolute (Dynamic) and Kinematic

Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic.

AWG - American Wire Gauge Converter

American Wire Gauge (AWG) vs. cross sectional area converter.

Density vs. Specific Weight and Specific Gravity

Introduction to density, specific weight and specific gravity.

Hot Water Heating Systems - Online Design Application

Free online design tool for designing hot water heating systems - metric units.

Water - Dynamic (Absolute) and Kinematic Viscosity

Free online calculator - figures and tables with viscosity of water at temperatures ranging 0 to 360°C (32 to 675°F) - Imperial and SI Units.

Flanges - ASME/ANSI B16.5 Flanges and Bolt Dimensions - Class 150 to 2500

Diameters and bolt circles for standard ASME B16.5 flanges - 1/4 to 24 inches - Class 150 to 2500.

Inches vs. mm - Conversion Chart

Convert fractional and/or decimal inches to metric mm - and vice versa.

Wrench Spanner - Inches vs. mm

SAE to metric wrench or spanner converting chart.

Area Moment of Inertia - Typical Cross Sections I

Typical cross sections and their Area Moment of Inertia.

Dry Air - Thermodynamic and Physical Properties

Thermodynamic properties of dry air - specific heat, ratio of specific heats, dynamic viscosity, thermal conductivity, Prandtl number, density and kinematic viscosity at temperatures ranging 175 - 1900 K.

Cars - New vs. Old Car Cost Calculator

Calculate and compare the costs between owning a new vs. an old car.

• Acoustics

Room acoustics and acoustic properties - decibel A, B and C - Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation

• Air Psychrometrics

The study of moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content

• Basics

The SI-system, unit converters, physical constants, drawing scales and more

• Combustion

Boiler house topics - fuels like oil, gas, coal, wood - chimneys, safety valves, tanks - combustion efficiency

• Drawing Tools

2D and 3D drawing tools

• Dynamics

Motion - velocity and acceleration, forces and torques

• Economics

Engineering economics - cash flow diagrams, present value, discount rates, internal rates of return - IRR, income taxes, inflation

• Electrical

Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors

• Environment

Climate, meteorology, sun, wind and environmental resources

• Fluid Mechanics

The study of fluids - liquids and gases. Involves velocity, pressure, density and temperature as functions of space and time

• Gases and Compressed Air

Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves

• HVAC Systems

Heating, ventilation and air conditioning systems - design and dimensions

• Hydraulics and Pneumatics

Hydraulic and pneumatic systems - fluids, forces, pumps and pistons

• Insulation

Heat transfer and heat loss from buildings and technical applications - heat transfer coefficients and insulation methods and to reduce energy consumption

• Material Properties

Material properties for gases, fluids and solids - densities, specific heats, viscosities and more

• Mathematics

Mathematical rules and laws - numbers, areas, volumes, exponents, trigonometric functions and more

• Mechanics

Forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more

• Miscellaneous

Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more

• Physiology

Human physiology, air quality and comfort temperatures, activity and metabolic rates, health effects of carbon monoxide and more

• Piping Systems

Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams

• Process Control

Instrumentation and process control systems, design and documentation

• Pumps

Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more

• Sanitary Drainage Systems

The purpose of a sanitary drainage system is to remove effluent discharged from plumbing fixtures and other equipment

• Standard Organizations

National and International organizations producing codes and standards - ANSI, ISO, DIN, BSi and more

• Statics

Loads - force and torque, beams and columns

• Steam and Condensate

Steam & condensate systems- properties, capacities, pipe sizing, systems configuration and more

• Thermodynamics

Effects of work, heat and energy on systems

• Water Systems

Hot and cold water service systems - design properties, capacities, sizing and more

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