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"The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers. The US standard symbols are outlined by the American National Standards Institute and the American Welding Society and are noted as "ANSI/ AWS".
In engineering drawings, each weld is conventionally identified by an arrow which points to the joint to be welded. The arrow is annotated with letters, numbers and symbols which indicate the exact specification of the weld. In complex applications, such as those involving alloys other than mild steel, more information may be called for than can comfortably be indicated using the symbols alone. Annotations are used in these cases." [Symbols and conventions used in welding documentation. Wikipedia]
The example chart "Elements of welding symbol" is redesigned using the ConceptDraw PRO diagramming and vector drawing software from the Wikipedia file: Elements of a welding symbol.PNG.
[en.wikipedia.org/ wiki/ File:Elements_ of_ a_ welding_ symbol.PNG]
The diagram example "Elements location of a welding symbol" is contained in the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Welding joint symbol chart
Welding joint symbol chart, field weld, arrow,

mechanical engineering, mechanical design software, mechanical drawing symbols, mechanical drawing software Mechanical Engineering

mechanical engineering, mechanical design software, mechanical drawing symbols, mechanical drawing software
This solution extends ConceptDraw DIAGRAM.9 mechanical drawing software (or later) with samples of mechanical drawing symbols, templates and libraries of design elements, for help when drafting mechanical engineering drawings, or parts, assembly, pneumatic,

Electrical Symbols, Electrical Diagram Symbols

How to create Electrical Diagram? It’s very easy! All you need is a powerful software. It wasn’t so easy to create Electrical Symbols and Electrical Diagram as it is now with electrical diagram symbols offered by the libraries of Electrical Engineering Solution from the Industrial Engineering Area at the ConceptDraw Solution Park.
This solution provides 26 libraries which contain 926 electrical symbols from electrical engineering: Analog and Digital Logic, Composite Assemblies, Delay Elements, Electrical Circuits, Electron Tubes, IGFET, Inductors, Integrated Circuit, Lamps, Acoustics, Readouts, Logic Gate Diagram, MOSFET, Maintenance, Power Sources, Qualifying, Resistors, Rotating Equipment, Semiconductor Diodes, Semiconductors, Stations, Switches and Relays, Terminals and Connectors, Thermo, Transformers and Windings, Transistors, Transmission Paths,VHF UHF SHF.
The vector stencils library "Delay elements" contains 12 symbols of delay elements for drawing electrical schematics and electronic circuit diagrams.
"An analog delay line is a network of electrical components connected in series, where each individual element creates a time difference or phase change between its input signal and its output signal. It operates on analog signals whose amplitude varies continuously. An example is a bucket-brigade device. Other types of delay line include acoustic, magnetostrictive, and surface acoustic wave devices. A series of RC networks can be cascaded to form a delay. A long transmission line can also provide a delay element. The delay time of an analog delay line may be only a few nanoseconds or several milliseconds, limited by the practical size of the physical medium used to delay the signal and the propagation speed of impulses in the medium." [Analog delay line. Wikipedia]
The symbols example "Design elements - Delay elements" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Delay element symbols
Delay element symbols, delay element,
The vector stencils library "Hydraulic pumps and motors" contains 74 symbols of hydraulic pump vector stencils, hydraulic motor symbols for engineering drawings of fluid power and hydraulic control systems.
"Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic.
Hydrostatic pumps are positive displacement pumps while hydrodynamic pumps can be fixed displacement pumps, in which the displacement (flow through the pump per rotation of the pump) cannot be adjusted, or variable displacement pumps, which have a more complicated construction that allows the displacement to be adjusted." [Hydraulic pump. Wikipedia]
"A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flow into torque and angular displacement (rotation). The hydraulic motor is the rotary counterpart of the hydraulic cylinder.
Conceptually, a hydraulic motor should be interchangeable with a hydraulic pump because it performs the opposite function - much as the conceptual DC electric motor is interchangeable with a DC electrical generator. However, most hydraulic pumps cannot be used as hydraulic motors because they cannot be backdriven. Also, a hydraulic motor is usually designed for the working pressure at both sides of the motor.
Hydraulic pumps, motors, and cylinders can be combined into hydraulic drive systems. One or more hydraulic pumps, coupled to one or more hydraulic motors, constitutes a hydraulic transmission." [Hydraulic motor. Wikipedia]
The shapes example "Design elements - Hydraulic pumps and motors" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Hydraulic pump and motor symbols
Hydraulic pump and motor symbols, variable displacement pump, variable displacement hydraulic pump, variable displacement hydraulic motor, pressure compensator, hydraulic variable displacement pump motor, hydraulic variable displacement pump, hydraulic variable displacement motor, hydraulic pump motor, hydraulic pump, hydraulic motor, floating motor, fixed displacement pump motor, fixed displacement pump, fixed displacement motor, fixed displacement hydraulic pump, fixed displacement hydraulic motor,
The vector stencils library "Transmission paths" contains 43 symbols of power transmission paths, electronic circuits, bus connectors and elbows, terminals, junctions, and concentrators.
Use it to annotate electrical diagrams, electronic schematics and circuit diagrams.
"A physical medium in data communications is the transmission path over which a signal propagates.
Many transmission media are used as communications channel.
For telecommunications purposes in the United States, Federal Standard 1037C, transmission media are classified as one of the following:
(1) Guided (or bounded) - waves are guided along a solid medium such as a transmission line.
(2) Wireless (or unguided) - transmission and reception are achieved by means of an antenna.
One of the most common physical medias used in networking is copper wire. Copper wire to carry signals to long distances using relatively low amounts of power. The unshielded twisted pair (UTP) is eight strands of copper wire, organized into four pairs.
Another example of a physical medium is optical fiber, which has emerged as the most commonly used transmission medium for long-distance communications. Optical fiber is a thin strand of glass that guides light along its length.
Multimode and single mode are two types of commonly used optical fiber. Multimode fiber uses LEDs as the light source and can carry signals over shorter distances, about 2 kilometers. Single mode can carry signals over distances of tens of miles.
Wireless media may carry surface waves or skywaves, either longitudinally or transversely, and are so classified.
In both communications, communication is in the form of electromagnetic waves. With guided transmission media, the waves are guided along a physical path; examples of guided media include phone lines, twisted pair cables, coaxial cables, and optical fibers. Unguided transmission media are methods that allow the transmission of data without the use of physical means to define the path it takes. Examples of this include microwave, radio or infrared. Unguided media provide a means for transmitting electromagnetic waves but do not guide them; examples are propagation through air, vacuum and seawater.
The term direct link is used to refer to the transmission path between two devices in which signals propagate directly from transmitters to receivers with no intermediate devices, other than amplifiers or repeaters used to increase signal strength. This term can apply to both guided and unguided media.
A transmission may be simplex, half-duplex, or full-duplex.
In simplex transmission, signals are transmitted in only one direction; one station is a transmitter and the other is the receiver. In the half-duplex operation, both stations may transmit, but only one at a time. In full duplex operation, both stations may transmit simultaneously. In the latter case, the medium is carrying signals in both directions at same time." [Transmission medium. Wikipedia]
The shapes example "Design elements - Transmission paths" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Transmission path symbols
Transmission path symbols, transmission path, terminal, 3-phase, terminal, straight, bus, point, overground, weatherproof, enclosure, optical fiber, line, cable, underground, line, cable, submarine, line, cable, overhead, line, cable, loaded, line, cable, coaxial, line concentrator, lead group, label, path, elbow, bus, direction, flow, transmission path, cable group, cable, conductor, bus, width, anticreep device, cable, 8-line, bus, straight bus connector, 8-line, bus, elbow, 4-line, bus, straight bus connector, 4-line, bus, elbow, 3-line, bus, elbow, 3-line bus, 3-channel, straight bus connector, 2-line, bus, elbow, 2-line bus, 2-channel, straight bus connector,
The vector stencils library "Chemical engineering" contains 24 symbols of chemical and process engineering equipment.
Use these shapes for drawing block flow diagrams (BFD), process flow diagrams (PFD), piping and instrumentation diagrams (P&ID), and water flow diagrams.
"Chemical engineering is a branch of engineering that applies the natural (or experimental) sciences (e.g., chemistry and physics) and life sciences (e.g. biology, microbiology and biochemistry) together with mathematics and economics to production, transformation, transportation and proper usage of chemicals, materials and energy. It essentially deals with the engineering of chemicals, energy and the processes that create and/ or convert them. Modern chemical engineers are concerned with processes that convert raw-materials or (cheap)chemicals into more useful or valuable forms. In addition, they are also concerned with pioneering valuable materials and related techniques – which are often essential to related fields such as nanotechnology, fuel cells and bioengineering. Within chemical engineering, two broad subgroups include design, manufacture, and operation of plants and machinery in industrial chemical and related processes ("chemical process engineers") and development of new or adapted substances for products ranging from foods and beverages to cosmetics to cleaners to pharmaceutical ingredients, among many other products ("chemical product engineers")." [Chemical engineering. Wikipedia]
The example "Design elements - Chemical engineering" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Chemical and Process Engineering solution from the Engineering area of ConceptDraw Solution Park.
Chemical engineering symbols
Chemical engineering symbols, vessel, venturi, flow nozzle, vapor, vertical, jacketed vessel, vaporizing equipment, vapor, horizontal, jacketed vessel, vaporizing equipment, valve, in-line, tower, bubble tower, sparge, process vessel, tank truck, tank car, screen, separating equipment, roll press, roll-type press, size-enlargement equipment, pump mixer, agitated-line, mixing equipment, propeller, mixing blade, motor valve, valve, kettle, reboiler, heat exchanging equipment, instrument, instrumentation, flash drum, knockout drum, process vessel, fan, centrifugal fan, evaporator, circulating evaporator, electrostatic precipitator, bag filter, separating equipment, cooling tower, auxiliary facility, clarifier, thickener, separating equipment, centrifugal pump, blower, rotary blower, agitator, radial turbine agitated tank, mixing equipment,
The vector stencils library "Qualifying" contains 56 qualifying symbols of radiation, polarity, phase, windings, wire, ground, connection, connector, coaxial, electret.
Use these signs to annotate or specify characteristics of objects in electrical drawings, electronic schematics, circuit diagrams, electromechanical drawings, and wiring diagrams, cabling layout diagrams.
"An electrical drawing, is a type of technical drawing that shows information about power, lighting, and communication for an engineering or architectural project. Any electrical working drawing consists of "lines, symbols, dimensions, and notations to accurately convey an engineering's design to the workers, who install the electrical system on the job".
A complete set of working drawings for the average electrical system in large projects usually consists of:
(1) A plot plan showing the building's location and outside electrical wiring.
(2) Floor plans showing the location of electrical systems on every floor.
(3) Power-riser diagrams showing panel boards.
(4) Control wiring diagrams.
(5) Schedules and other information in combination with construction drawings.
Electrical drafters prepare wiring and layout diagrams used by workers who erect, install, and repair electrical equipment and wiring in communication centers, power plants, electrical distribution systems, and buildings." [Electrical drawing. Wikipedia]
The signs example "Design elements - Qualifying" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Qualifying symbols
Qualifying symbols, special connector, cable indicator, radiation, radiation travel, direction, positive polarity, phase, windings, wire, connection, zigzag, phase, windings, wire, connection, star, phase, windings, wire, connection, polygon, phase, windings, wire, connection, fork, phase, windings, wire, connection, double star, phase, windings, wire, connection, double delta, phase, windings, wire, connection, delta, phase, windings, wire, connection, neutral, conductor, negative polarity, multiple-phase, electret, coaxial line, coaxial,
The vector stencils library "Bearings" contains 59 symbols of ball bearings, roller bearings, shafts, springs, gears, hooks, spindles, and keys.
Use it to design engineering drawings of machine tools and mechanical devices.
"A bearing is a machine element that constrains relative motion and reduce friction between moving parts to only the desired motion. The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts. Many bearings also facilitate the desired motion as much as possible, such as by minimizing friction. Bearings are classified broadly according to the type of operation, the motions allowed, or to the directions of the loads (forces) applied to the parts." [Bearing (mechanical). Wikipedia]
The shapes example "Design elements - Bearings" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Bearing symbols
Bearing symbols, undercut, shaft, variable fillet radius, thrust ball bearing, through hole, threaded hole, tapered shaft, tapered key, gib head, taper roller bearing, roller bearing, spindle end, shaft, hollow shaft, shaft chamfer, chamfer, round key, round-end key, rolling bearing, needle roller bearing, roller bearing, hole chamfer, chamfer, gear, spur-gear, double row, spherical roller bearing, roller bearing, double row, self aligning, ball bearing, deep groove, ball bearing, cylindrical roller bearing, roller bearing, cutaway, revealing detail, countersunk hole, centering bore, hole, shaft, angular contact, ball bearing,
The vector stencils library "Dimensioning and tolerancing" contains 45 symbols of geometric dimensions and mechanical tolerances, geometric symbols, callouts, and text boxes and inserts.
Use these geometric dimensioning and tolerancing (GD&T) shapes to create annotated mechanical drawings.
"Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models that explicitly describes nominal geometry and its allowable variation. It tells the manufacturing staff and machines what degree of accuracy and precision is needed on each controlled feature of the part. GD&T is used to define the nominal (theoretically perfect) geometry of parts and assemblies, to define the allowable variation in form and possible size of individual features, and to define the allowable variation between features." [Geometric dimensioning and tolerancing. Wikipedia]
The shapes example "Design elements - Dimensioning and tolerancing" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mechanical Engineering solution from the ConceptDraw Solution Park.
Dimensioning and tolerancing symbols
Dimensioning and tolerancing symbols, total runout, text block, symmetry, surface, finish, roughness, surface profile, straightness, statistical tolerance, slope, position, positioning, perpendicularity, parallelism, material condition, line profile, flatness, diameter, depth, datum, reference, circle, datum, feature control, datum target, point, datum target, line, datum target, area, datum, cylindricity, countersink, counterbore, spotface, conical taper, concentricity, circularity, circular runout, callout, arc length, angularity,
The vector stencils library "Electrical and telecom" contains 83 symbols of electrical and telecommunication equipment for electrical drawings and wiring diagrams of buildings, communication centers, power plants and electrical distribution systems.
"An electrical drawing, is a type of technical drawing that shows information about power, lighting, and communication for an engineering or architectural project." [Electrical drawing. Wikipedia]
Use the design elements library "Electrical and telecom" to design your own electrical drawings, plot plans of the building outside electrical wiring, floor plans with electrical and telecommunication systems layout, power-riser diagrams with panel boards, control wiring diagrams and cabling layout schemes, reflected ceiling plans and lighting panels layouts using the ConceptDraw PRO diagramming and vector drawing software.
The shapes library "Electrical and telecom" is included in the Electric and Telecom Plans solution from the Building Plans area of ConceptDraw Solution Park.
Electrical and telecom symbols
Electrical and telecom symbols, watchman's station, watchman's central station, wall mounted, telephone box, data junction box, hardware, wall mounted, electrical junction box, hardware, wall light, three, poly phase, thermostat, telephone outlet, telephone key system, surface fluorescent light, stereo speaker outlet, stereo outlet, socket outlet, power outlet, switched socket, socket outlet, power outlet, double socket, socket outlet, power outlet, single phase, signal central station, push button, pull-cord switch, outside antenna, outdoor lightning, bollard, outdoor lightning, motion sensor, modular fluorescent fitting, main control, intake, maid's dignal plug, magnetic door hold, luminaire ceiling mount, light bar, intercom, inside antenna, illuminated emergency sign, emergency sign, horn, hold open unit,  electro magnetic door, ground connection, ground, fire alarm station, fire alarm sounder, fire alarm, fire alarm central station, fire alarm bell, enclosed ceiling luminaire, emergency release button, emergency light, emergency lightning point, electrical switch, switch, multi-switch, electrical switch, switch, electrical service panel, service panel, electric, door opener, electric motors, down lighter, doorbell transformer, doorbell chime, doorbell, dimmer switch, digital satellite system, detector, surface mounted, heat detector, smoke detector, city fire alarm station, fire alarm station, ceiling fan, exhaust fan fixture, card reader, access system, cable television outlet, television outlet, cable TV outlet, TV outlet, buzzer, battery, batten fluorescent, automatic fire alarm device, annunciator,
The vector stencils library "Terminals and connectors" contains 43 element symbols of terminals, connectors, plugs, polarized connectors, jacks, coaxial cables, and conductors.
Use it for drawing the wiring diagrams, electrical layouts, electronic schematics, and circuit diagrams.
"An electrical connector is an electro-mechanical device for joining electrical circuits as an interface using a mechanical assembly. Connectors consist of plugs (male-ended) and jacks (female-ended). The connection may be temporary, as for portable equipment, require a tool for assembly and removal, or serve as a permanent electrical joint between two wires or devices. An adapter can be used to effectively bring together dissimilar connectors.
There are hundreds of types of electrical connectors. Connectors may join two lengths of flexible copper wire or cable, or connect a wire or cable or optical interface to an electrical terminal.
In computing, an electrical connector can also be known as a physical interface... Cable glands, known as cable connectors in the US, connect wires to devices mechanically rather than electrically and are distinct from quick-disconnects performing the latter." [Electrical connector. Wikipedia]
"A terminal is the point at which a conductor from an electrical component, device or network comes to an end and provides a point of connection to external circuits. A terminal may simply be the end of a wire or it may be fitted with a connector or fastener. In network analysis, terminal means a point at which connections can be made to a network in theory and does not necessarily refer to any real physical object. In this context, especially in older documents, it is sometimes called a "pole".
The connection may be temporary, as seen in portable equipment, may require a tool for assembly and removal, or may be a permanent electrical joint between two wires or devices.
All electric cell have two terminals. The first is the positive terminal and the second is the negative terminal. The positive terminal looks like a metal cap and the negative terminal looks like a metal disc. The current flows from the positive terminal, and out through the negative terminal, replicative of current flow (positive (+) to negative (-) flow)." [Terminal (electronics). Wikipedia]
The shapes example "Design elements - Terminals and connectors" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Terminal and connector symbols
Terminal and connector symbols, terminal board, terminal strip, small, D connector, D-type connector, shielded, RCA, plug, shielded, RCA, jack, normalled, jack, circuit, male contact, large, D connector, D-type connector, female contact, coaxial, outside conductor, coaxial plug, coaxial jack, circuit terminal, center conductor coaxial, outside conductor, chassis, cable termination, single line, cable termination, complete, adapter, male-male, adapter, male-female, C header connector, 15 pin, type C, AC out, AC power out, 3-conductor, polarized connector, male, 3-conductor, polarized connector, female, 2-conductor, plug, 2-conductor, nonpolarized connector, male, 2-conductor, nonpolarized connector, female, 2-conductor, jack,

ERD Symbols and Meanings

Crow's foot notation is used in Barker's Notation, Structured Systems Analysis and Design Method (SSADM) and information engineering. Crow's foot diagrams represent entities as boxes, and relationships as lines between the boxes. Different shapes at the ends of these lines represent the cardinality of the relationship.
The Chen's ERD notation is still used and is considered to present a more detailed way of representing entities and relationships.
To create an ERD, software engineers mainly turn to dedicated drawing software, which contain the full notation resources for their specific database design - ERD symbols and meanings. CS Odessa has released an all-inclusive Entity-Relationship Diagram (ERD) solution for their powerful drawing program, ConceptDraw DIAGRAM.
How to Build an Entity Relationship Diagram (ERD)
How to Build an Entity Relationship Diagram (ERD)
The vector stencils library "Pneumatic pumps and motors" contains 39 symbols of pneumatic pumps, motors and pump-motors for designing the engineering drawings of pneumatic circuits.
"A pneumatic motor or compressed air engine is a type of motor which does mechanical work by expanding compressed air. Pneumatic motors generally convert the compressed air energy to mechanical work through either linear or rotary motion. Linear motion can come from either a diaphragm or piston actuator, while rotary motion is supplied by either a vane type air motor or piston air motor." [Pneumatic motor. Wikipedia]
"A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.
Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are compressible, the compressor also reduces the volume of a gas. Liquids are relatively incompressible; while some can be compressed, the main action of a pump is to pressurize and transport liquids." [Gas compressor. Wikipedia]
The shapes example "Design elements - Pneumatic pumps and motors" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Pneumatic pump and motor symbols
Pneumatic pump and motor symbols, variable displacement pump, variable displacement pneumatic pump motor, variable displacement pneumatic pump, variable displacement pneumatic motor, pump, pneumatic, pump, motor, pneumatic, pneumatic variable displacement pump motor, pneumatic variable displacement pump, pneumatic variable displacement motor, pneumatic pump motor, pneumatic pump, motor, pneumatic, fixed displacement pump motor, fixed displacement pump, fixed displacement pneumatic pump, fixed displacement pneumatic motor, fixed displacement motor,
The vector stencils library "Logic gate diagram" contains 17 element symbols for drawing the logic gate diagrams.
"To build a functionally complete logic system, relays, valves (vacuum tubes), or transistors can be used. The simplest family of logic gates using bipolar transistors is called resistor-transistor logic (RTL). Unlike simple diode logic gates (which do not have a gain element), RTL gates can be cascaded indefinitely to produce more complex logic functions. RTL gates were used in early integrated circuits. For higher speed and better density, the resistors used in RTL were replaced by diodes resulting in diode-transistor logic (DTL). Transistor-transistor logic (TTL) then supplanted DTL. As integrated circuits became more complex, bipolar transistors were replaced with smaller field-effect transistors (MOSFETs); see PMOS and NMOS. To reduce power consumption still further, most contemporary chip implementations of digital systems now use CMOS logic. CMOS uses complementary (both n-channel and p-channel) MOSFET devices to achieve a high speed with low power dissipation." [Logic gate. Wikipedia]
The symbols example "Design elements - Logic gate diagram" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Logic gate symbols
Logic gate symbols, operational amplifier, gate, open-collector output, gate, Schmitt trigger input, buffer, OR gate, Norton opamp, Norton operational amplifier, NOT gate, inverter, NOR gate, NOT OR, NAND gate, NOT AND, EX-OR gate, exclusive-OR gate, EX-NOR gate, exclusive-NOR gate, AND gate,