Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more
Conforming abbreviations according IEC
Variation of acceleration of gravity due to latitude and elevation above sea level
Elevation - air temperature, pressure and air density
Tipping or dumping angles for some common materials like ashes, sand, earth, shingles
Typical temperature and humidity environments for animals in laboratories
Freeze protecting cooling systems - temperature rating vs. required amount of antifreeze
Apothecaries' fluid and weight system - ounce, drachms, grains, scruples ..
Online app making an exact plot of a surveyed area - like a room, a property or any 2D shape.
Heating temperatures of shrink-fits
Elevation above sea level - in feet and meter - with barometric and atmospheric pressure - inches mercury, psia, kg/cm2 and kPa
Compensating manometer for elevation
Relation between barometric pressure (inches Hg) and pressure in psi and psf
The Beaufort description and observation of wind and wind speed
The letters commonly used to differentiate blueprint drawings.
Board feet - volume measurement of lumber
Estimating required quantity of bricks and mortar
Convert builder's measurements to surveyor's measurements
Typical loads on building foundations
Tolerances for floors, walls, columns and more
The European Machine Directive
Bodies and their 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 theories
Piston engine cylinder volume ratio
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 required concrete volume
Estimate required concrete volume per sq. ft. of slab
Concrete and water to cement ratios
Estimate concrete volume required for concrete columns
Estimating concrete continous footing
Estimate required concrete footing volume
Load capacity of simply supported concrete slabs
Recommended thickness of concrete slabs
Estimate volume in concrete walls
Recommended maximum belt speed
Calculate the capacity of conveyors
Load and conveyors required power consumption
Maximum conveyor slopes for various materials
Convert liquid cooking volumes
Convert common cooking liquid and dry measuring volumes between US and metric units
Construction Specifications Institute's 2004 Master-Format Edition.
Logarithmic unit used to describe ratios of signal levels - like power or intensity - to a reference level.
Design for Assembly Index
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
Pressure due to soil and transport
Typical power consumption and running time for some common electrical equipment
Direct-on-line starters, star-delta starters, frequency drives and soft starters
Introduction to electro chemical series and corrosion of metals
Speed of sound, temperature and pressure at different altitudes
Oil viscosity vs. temperature
Convert between miles/kWh and kWh/100 km
Battery size, SOC - state of charge, energy consumption and electric vehicle range
Power supply and electrical vehicle charging speed
Calculating excavation slope
Factors of Safety - FOS - are important for engineering design
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 of 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 some common frozen food products
Optimal temperature and humidity conditions for some common fruits and vegetables
Estimate fuel consumption in liter per km - consumption chart and calculator
Estimate 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
Gauge and weight chart for sheet steel, galvanized steel, stainless steel, aluminum and strip & tubing
Typical sizes of glue-laminated timber
Golden Section also called the Golden Mean.
Gravel aggregate covering area
Grease is a combination of oil and thickener
Comparison of sandpaper grit size and surface roughness
Size of hardwood lumber
European hazardous area classification in zones, protection types, temperature codes and codes
North American hazardous locations classification in 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
Machine processing and tolerances
Manila 3-strand rope - minimum breaking strength and safe load
Mapping scales vs. lengths and area.
Concrete Masonry Unit Blocks (CMU) - dimensions
Light reflecting factor materials
Mechanical production methods and surface roughness
Strainers and filters - mesh size vs. particle diameter opening size
ANSI/SO, DIN and JIS bolts
Round bar weights
Typical weight of mild steel square bars
Converting minutes to descimal hours
Free online tool to calculate miter saw protractor angles.
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
Introduction to pH - the acidic and basic (alkaline) definition.
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
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 - 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
US commercial sieve sizes and mesh designations
Sisal rope 3-strand, minimum breaking strength and safe load
Converting 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
Maximum fire sprinkler protection area
Calculate steps, unit rise and run in a stair
Standard gauges for wire and sheet - American, Birmingham, Washburn, Music, Stubs ..
An overview of common test methods and specifications of petroleum fuels. What, why and how do the different test?
An overview of common test methods and typical ranges of variation of petroleum quality parameters. What, why and how do the different test?
Typically weight of mild steel flats
Size & weight of steel plates - Imperial and Metric units
The tempering process of hardening steel
Steel wool grades and fiber thickness
Volume of natural stockpiles - cubic feet, yard, metre and decimetre
Weight and strength of sandstone, granite, limestone, marble and slate
Lumber and surface finishing abbreviations
U.S. mesh size and surface roughness
Explanation of symbols used as subscripts or superscripts to tell more about the type of chemical reaction, process or condition.
The Greek alphabet is essential when expressing formulas and technical language
The phonetic alphabet used in international aircraft communications
Threaded bolts tensile stress area
Estimate trench excavation - online calculator
Weight of gold and silver
Commonly used engineering and construction contracts
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.
Enhancing function and improving value
A variable frequency drive develops heat during work and to avoid overheating ventilation is required
Speed (miles per hour) and time (hours) and distance traveled (miles) chart
Speed (km per hour) vs. time (hours) and distance traveled (km).
Vehicles traffic flow and density as used in highway design
Convert speed and velocity units - m/s, km/h, knots, mph and ft/s
Volume in US gallons and Liters
Tank volume per foot depth
Calculate the number of studs in a wall
Trees and their relative water demand
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
SAE to metric wrench or spanner converting chart.