Engineering Tools, Calculators, and Charts

Scheduling Days / Weeks Out

Project Management

Easily determine lead times based on order or submittal dates.

Scheduling Calculator

Margin & Markup

Project Management

Margin and markup are frequently confused. Don’t make that error with this easy to use tool.

Margin and Markup Calculator

Unit Conversion

General Use

Convert almost any unit of measurement you can think of.

Unit conversion

Engineering Education

Diesel Cycle – Principles, Calculations, and Applications

The diesel cycle is a thermodynamic cycle which undergoes internal combustion. It is similar to the Otto cycle. However, the main difference is that the fuel heats by the compression…

Shop Drawings – Definition, Use, Examples, Software, & Alternatives

Shop drawings, or fabrication drawings, provide fabrication details that a facility or field crew uses to manufacture a part or assembly. In this article, you will learn the definition of…

Damping Ratio

In many engineering applications, damping ratio provides an important dimensionless parameter that describes the decay of oscillations in a system. From a system’s equilibrium, external disturbances may cause displacements in…

Refrigeration Cycle – Principles, Calculations, and Applications

The refrigeration cycle is a specially designed thermodynamic cycle that removes heat from a closed environment to keep the inside cool. Likewise, it provides the exact opposite effect by simply…

Otto Cycle – Principles and Calculations

The Otto cycle is best exemplified by the sparkplug engine. Regularly seen in car engines and lawnmowers, this cycle is versatile in the different jobs it can do as well…

Roof Snow Load Chart & Table Per IBC – United States

General Snow Load Guidance Section 1608 of the International Building Code provides a roof snow load chart and table for the United States. The first paragraph of 1608.1 dictates the…

Helipad Structural Design

The International Building Code (IBC) governs helipad structural design. Section 1607.6 Helipads of the IBC Code provides detailed design guidance. Helipad Live Load Design The uniform live load of a…

Hydraulic Permeability – Definition, Calculations, & Applications

Hydraulic permeability is a unit of measure that describes the mobility and ease by which fluids are able to navigate. It is notated by the letter k in scientific and…

Brayton Cycle – Principles and Calculations

The Brayton cycle is a thermodynamic cycle that utilizes warm air as the working fluid. The cycle sees common use in jet engines, because of the flow of air and…

Germanium Transistor – History, Purpose, and Pin-Out

As civilization grows bigger, technological developments get smaller in size. The discovery of the germanium transistor ushered in a new age of computing. Its technology would become the building blocks…

Rankine Cycle – Principles and Calculations

The Rankine cycle is a thermodynamic cycle that allows uses steam as the working fluid inside of a cycle. This contrasts with most thermodynamic cycles that use air or some…

Thermodynamic Cycles- Principles, Purpose, and Types

Thermodynamic cycles are processes that involve heat and work flowing into and out of a system. These systems usually intake a working fluid and output mechanical work or energy. These…

Hydraulic Diameter – Purpose, Formula, Alternatives, Applications

Hydraulic diameter, DH, is the characteristic length used to determine Reynolds number when dealing with flow in non-circular mediums. Reynolds number may then be of use in determining whether a…

Modulus of Rigidity – Equation, Steel Selection, and Values

The modulus of rigidity is the ratio of shear stress to shear strain. Thus, it measures the ability of the material to withstand distortion. However, the rigidity of the material…

DBTT – Ductile Brittle Transition Temperature

The ductile-brittle transition temperature, often referred to as DBTT, is the temperature at which there is a pronounced decrease in a material’s ability to absorb force without fracturing. At this…

Stagnation Pressure – Uses and Real Life Applications

Stagnation pressure is the fluid pressure that is measured while an initially flowing fluid is fully at rest. The fluid still holds mechanical energy through pressure despite having no movement….

Shot Peening – Process, Machines, Applications, and Advantages

Shot peening is a mechanical treatment process in which the surface of a metal object is subject to a stream of very high velocity small spherical balls of metal, glass,…

Prandtl Number – Calculation and Effective Use

The Prandtl Number is an unitless ratio that describes the momentum diffusivity to thermal diffusivity of a liquid. Using a Prandtl number provides the relation of the thickness of the…

Reflectivity

Reflectivity is the property by which an object is able to reflect light or radiation. Optically speaking, it refers to the amount of light that is reflected from incident light…

Material Hardness

There are different ways to define hardness depending on the material. For minerals, it is the property of resistance of a material to scratching by another material. Metallurgy defines hardness…

Graphene

The thinnest material known to man, graphene provides extreme strength, thermal conductivity, and electrical conductivity on par with copper. As such, this material has made an uproar with the scientific…

Metal Passivation

Metal passivation chemically treats metal to reduce its surface chemical reactivity. Reducing surface chemical reactivity helps inhibit corrosion in metal objects. In this article, you’ll learn about the benefits of…

Metal Pickling: Process and Advantages

In fabrication, metal pickling refers to a metal treatment process that reduces impurities on the surface of a metallic object. The pickling process removes the surface impurities, such as stains,…

Engineering and Manufacturing BOMs

The bills of material, or BOMs, for products or assemblies, allow engineering to design and guide the manufacturing of individual material, parts, or assemblies. A bill of material specifies the…

Molar Absorptivity

Molar absorptivity is the measure of how well an object absorbs radiation that the object is in contact with. Molar absorptivity is integral to Beer-Lambert law which relates absorbance, absorptivity,…

Fracture Toughness

Fracture toughness is a physical property of matter. It describes the resistance of the material to fracture while it has cracks.  It is different than simple toughness which is defined…

Crystal Structures – Composition & Properties

In the realm of material science, the composition of a material and a molecular level affects how a material will react to different forces, temperatures, and changes. Among the different…

HAZOP – Process and Methods

A hazop study is a powerful, systematic, and structured methodology that helps in identifying potential hazards and/or problems with plant operability. Hazop stands for hazard and operability study. The hazop…

Emissivity and Its Impact on Radiant Heat

The material property known as emissivity describes a material’s propensity to radiate energy. Emissivity measurements, sometimes referred to as an e-value, range from 0 to 1. A measurement of 0…

Materials Selection – The Engineering Process

The materials selection process for a component or assembly involves a careful evaluation of the benefits and trade-offs of material properties. In this article, you will learn the properties involved…

Project Engineer – Duties and Salary

A project engineer leads the technical development of an engineering project. Depending on the size and responsibility afforded to the project engineer, he/she may also be charged with project management…

Pipe Stress Analysis

Pipe stress analysis provides an empirical tool to evaluate how a piping system behaves based on its material, pressure, temperature, fluid, and structure. Pipe stress analysis gives a good estimate…

Electrical Designer – Duties and Salary

An electrical designer works with mechanical designers, engineers, clients, and fabricators to produce design documentation for electrical equipment. Not all industries require a dedicated electrical designer. Equipment that with only…

Mechanical Designer – Duties and Salary

A mechanical designer works with engineers, clients, and fabricators to produce design documents. In this article, you will learn job roles, design packages used, credentials, and potential employers of mechanical…

Pump Cavitation

In many piping systems, pumps are crucial to the proper operation of the system. In some cases, the intended flow characteristics are not met which causes operational issues. Among those…

Smart P&ID

Smart or Intelligent P&IDs are schematic drawings that show the connections and relationships of piping and instrumentation within a piping system. Working in conjunction with stored information such as design…

Fatigue Failure

In the engineering world, most cases of material failure occur as a result of fatigue. Fatigue failure is the fracture that occurs in a material as a result of prolonged…

PFD – Process Flow Diagrams

PFDs, known as process flow diagrams, detail the processes or relationships between the major components in a system from piping to instrumentation. They offer high level guidance on the sequence…

Pipe Spool Drawings

Pipe spool drawings, sometimes referred to as piping isometrics, are shop drawings that provide a 3 dimension view of a piping run to allow shop personnel to fit and weld…

General Arrangement (G/A) Drawings

General Arrangement (G/A) drawings present the overall composition of a plant, skid, building, or piece of equipment. In this article you will learn the process for generating a G/A, how…

Piping & Instrumentation Diagrams (P&IDs)

The P&ID, also known as the Piping and Instrumentation Diagram, is an end to end schematic that displays major process details of a system. P&IDs show operating conditions, major equipment,…

5 Ways Equipment Providers Win at the Freight Game

Freight is an often overlooked element of executing large construction projects. Freight is rarely a significant a profit center, but when handled improperly, it can destroy profit margin, infuriate your…