Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.
Acceleration of gravity due to latitude and elevation above sea level.
Elevation above sea level and air temperature, pressure and density.
Tipping or dumping angles for common materials like ashes, sand, earth, shingles and more.
Temperature and humidity environments for laboratory animals.
Freeze protecting of cooling systems - temperature rating vs. required amount of antifreeze.
Apothecaries' fluid and weight system with ounces, drachms, grains, scruples and more.
Online app that can be used to make an exact plot of a surveyed area - like a room, a property or any 2D shape.
Elevation above sea level - in feet and meter - with barometric and atmospheric pressure - inches mercury, psia, kg/cm2 and kPa.
Elevation compensating manometer.
Convert between barometric pressure inches Hg, psi and psf.
The Beaufort description and observation scale for wind and wind speed.
Letters commonly used to differentiate blueprint drawings.
Board feet is used as a volume measurement of lumber.
Estimate required quantities of bricks and mortar.
Convert builder's measurements to surveyor's measurements.
Typical loads on building foundations.
Typical tolerances for floors, walls, columns and more.
Calculate fuel consumption in liter per km - consumption chart and calculator.
Verifies that a product is designed to the appropriate standards according the European Machine Directive.
A body and the center of gravity.
Formulas and trading names for some common chemicals.
Comparing European, UK, US sizing in clothing, shoes, shirts and sweaters.
Calculator for CO2 emissions from trains, comparing with alternative forms of transportation (as plane, bus, conventional and electrical cars).
Calculator for CO2 emissions from planes, comparing with alternative forms of transportation (as train, bus, conventional and electrical cars).
Calculator for CO2 emissions from different kind of cars (gasoline, diesel, LPG, electrical), comparing with alternative forms of transportation (as airplane, bus and train).
Subtractive and additive color mixing.
Calculator and formulas for conversion between different units of concentration: Molarity, molality, mole fraction, weight percent of solute and grams of solute per liter of solution - descriptive terms for solubility.
Calculating the concrete volume required for an operation.
Water vs. cement ratio when mixing concrete.
Estimate concrete volume required for concrete columns.
Estimating concrete continous footing.
Estimate required concrete footing volume.
Load capacity of simply supported concrete slabs.
Required thickness of concrete slabs.
Estimate required concrete volume per sq. ft.
Estimate concrete wall volume.
The mathematical e constants.
The mathematical π constants.
Commonly used engineering and construction contracts.
Maximum conveyor belt speed.
Calculate conveyor capacities.
Conveyor required power consumption vs. load.
Maximum conveyor inclination slopes for typical products.
Convert between different liquid cooking volume units.
Convert between cooking liquid and dry measuring US and metric volume units.
An overview of common test methods and typical ranges of variation of petroleum quality parameters. What, why and how do the different test?
Construction Specifications Institute's 2004 Master-Format Edition.
Volume in US gallons and liters.
Logarithmic unit used to describe ratios of signal levels - like power or intensity - to a reference level.
Design for Assembly Index indicates how easy it is to assembly a component.
Physical and chemical dimensionless quantities - Reynolds number, Euler, Nusselt, and Prandtl number - and many more.
Velocity plotted in time used diagram.
Flight distances between selected cities in different countries and continents, to be used to calculate CO2 emissions from long distance flights.
Standard drawing sheets layouts.
Standard metric drawing sheet sizes.
Hardwood and softwood drill speed chart.
Driving distance between some major European cities.
Critical temperatures and concentration parameters for substances like coal, zinc, uranium and more.
Typical power consumption and running time for common electrical equipment.
Direct-on-line starters, star-delta starters, frequency drives and soft starters.
Abbreviations according the International Electrotechnical Commission (IEC).
Altitude and speed of sound, temperature and pressure.
Oil viscosity vs. temperature.
Convert between energy consumption units like miles/kWh and kWh/100 km.
Electric vehicle range vs. battery size, SOC - state of charge and energy consumption.
Electrical vehicle charging speed vs. power supply and energy consumption.
Calculating excavation slope.
Factors of Safety - FOS - are important in engineering designs.
Wood screws, machine screws, sheet metal screws, self drilling SMS and more.
Convert from feet and inches to inches.
F-rated, T-rated and L-rated fire-stop systems.
Osmotic pressure in food products.
Common bacteria and viruses found in food.
Friction theory with calculator and friction coefficients for combinations of materials like ice, aluminum, steel, graphite and many more.
Practical storage life for common frozen food products.
Optimal temperature and humidity conditions for common fruits and vegetables.
Calculate fuel consumption in miles per gallon - mpg - calculator and consumption charts.
Convert between fuel consumption units like US MPG, Imperial MPG, litre/nm, litre/100 km and km/litre
Introduction to electro chemical series and corrosion of metals.
Common sizing of glue-laminated timber.
Golden Section also called the Golden Mean.
Gravel aggregate covering area.
Temperature limits for grease - a combination of oil and thickener.
The Greek alphabet is essential expressing formulas and in technical language.
Comparing sandpaper grit size and surface roughness.
Sizing of hardwood lumber.
European hazardous area classification with zones, protection types, temperature codes and codes.
North American hazardous locations classification with classes, divisions and groups
Safe html color codes.
The decimal equivalents of eights, sixteenths, thirty-seconds and sixty-fourths of an inch.
International standard atmosphere in elevation -2000 to 30000 metre - pressure, temperature, density, viscosity, thermal conductivity and velocity of sound.
Dimensions of metric threads according ISO 724.
Convert between Degrees, Minutes and Seconds and Decimal Units (or vice versa).
Specific gravity and charge of lead acid batteries - temperature and efficiency.
Convert between units like metre, feet, inches, yards, kilometers and miles.
Effects of low-frequency vibrations on building constructions.
Lumber and surface finishing abbreviations.
Machine processing and tolerance grades.
Minimum breaking strength and safe load of manila 3-strand rope.
Convert between mapping scales.
Concrete Masonry Unit Blocks (CMU) - dimensions.
Light reflecting factor materials.
Strainers and filters - mesh size vs. particle diameter opening size.
ANSI/SO, DIN and JIS bolts.
Weight of round bars.
Typical weights of mild steel square bars.
Convert minutes to descimal hours.
Calculate miter saw protractor angles for skirting and decorative mouldings work.
ASTM mortar types.
Allowable withdrawal load for nail and spikes.
Some numerical constants.
Nylon 3-strand and 8-strand rope - minimum breaking strength and safe load.
Temperature limits for lubricating oils.
ISO vs. U.S. and Canadian drawing sheets.
ISO 216 A, B and C drawing series - dimensions of regular, oversized and envelope sheets.
Office paper sizes as Letter, Legal, Tabloid and more.
Printing and drawing papers sizes.
Pasteurization methods, time and temperatures.
An overview of common test methods and specifications of petroleum fuels. What, why and how do the different test?
Introduction to pH - the acidic and basic (alkaline) definition.
The phonetic alphabet used in international aircraft communications.
Cylinder volume and compression ratios in piston engines.
Calculate piston engine displacement.
When a material is stretched in one direction it tends to get thinner in the other two directions.
Polyester Polyolefin dual fiber 3-strand rope - minimum breaking strength and safe load.
Polyester 3-strand and 8-strand rope - minimum breaking strength and safe load.
Polypropylene fiber 3-strand and 8 strand rope - minimum breaking strength and safe load.
Units of fineness - Karat.
Reinforcing bar - European metric dimensions.
U.S. imperial dimensions of rebar
Weights of rebar rods - size ranging 1/4.
Tank volume per foot depth.
Lubrication effect on bolt tension and torque.
Roman numerals are a combinations of seven letters.
Run, roof slope, gable height and gable area.
Weight calculator for roofing materials.
American National Standards Institutes schedule for safety colors marking physical hazards.
Grit sizes ranging 12 - 600.
Orbital and escape velocity for geostationary satellites.
The relative scale of objects.
Abbreviations for Use on Drawings and in Text - ANSI Y1.1.
Safe loads of shackles.
Vessel and cargo capacities.
Assembly temperatures for shrink-fits.
US commercial sieve sizes vs. mesh designations.
Sisal rope 3-strand, minimum breaking strength and safe load.
Convert slopes pitch between degrees, gradients and grades.
Commercial softwood lumber dimension chart - nominal and actual sizes.
Rough lumber, surfaced lumber (dressed), worked lumber, shop and factory lumber and yard lumber.
Soil and rock expansion - or swell - after mining.
Calculate steps, unit rise and run in a stair.
Standard gauges for wire and sheet - American, Birmingham, Washburn, Music, Stubs ..
Typically weight of mild steel flats.
Size & weight of steel plates - Imperial and Metric units.
The tempering process of hardening steel.
Steel wool grades vs. fiber thickness.
Volume of natural stockpiles - cubic feet, yard, metre and decimetre.
Weight and strength of sandstone, granite, limestone, marble and slate.
U.S. mesh size vs. surface roughness.
Mechanical production methods and their surface roughness.
Explanation of symbols used as subscripts or superscripts to tell more about the type of chemical reaction, process or condition.
Threaded bolts tensile stress area.
Trees species and relative water demand.
Estimate trench excavation - online calculator.
Weight unit for preciuos metals like gold and silver.
Pressure acting on underground pipes due to weight of soil and transport.
The ASTM E1557 UNIFORMAT II Standard.
Height of trees commonly used in towns and urban areas.
Printable fastener chart.
Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt.
Machine screw diameters.
US architectural drawing sizes and formats.
US engineering drawing sizes based on ANSI/ASME Y14.1.
Wood screws - nominal sizes vs. diameters.
Hard wood and soft wood pilot holes, shank clearance holes and countersink diameters.
Free online UTM to Latitude and Longitude coordinates converter.
Improved value by enhanced function.
Avoid overheated variable frequency drives with adequate ventilation.
Speed (mph) and time (hours) and distance traveled (miles) chart.
Speed (km/h) vs. time (hours) and distance traveled (km).
Traffic flow and density as used in highway design.
Convert between speed and velocity units like m/s, km/h, knots, mph and ft/s.
Calculate required number of studs in a wall.
Maximum fire sprinkler protection area vs. classification and construction.
Gauge and weight chart for sheet steel, galvanized steel, stainless steel, aluminum and strip & tubing.
Melting and welding temperatures.
6 strand x 19 wire (6x19) - minimum breaking strength, safe loads and weight.
Red Spruce, Longleaf Pine and Douglas Fir - moisture content and their compressive strength.
Allowable withdrawal load force.
Convert between US Inches and metric mm wrench and spanner sizes.