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  2. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    The older symbol for this was a small script (italic) f (see herein f). Later the ASA convened upon a letter V (specifically a sans-serif V) touching the surface. Soon this evolved into the "check mark" sign with accompanying number that tells the reader a max roughness value (RMS, microinches or micrometres) for the machined finish, to be ...

  3. ISO 14617 - Wikipedia

    en.wikipedia.org/wiki/ISO_14617

    ISO 14617 Graphical symbols for diagrams is a library of graphical symbols for diagrams used in technical applications. [1] ISO 14617 consists of the following parts: Part 1: General information and indexes; Part 2: Symbols having general application; Part 3: Connections and related devices; Part 4: Actuators and related devices

  4. HEC-RAS - Wikipedia

    en.wikipedia.org/wiki/HEC-RAS

    The first version of HEC-RAS was released in 1995. [5] This HEC-RAS 1.0 solves the same numerical equation of the 1968 HEC-2. Prior to the 2016 update to Version 5.0, the program was one-dimensional, meaning that there is no direct modeling of the hydraulic effect of cross section shape changes, bends, and other two- and three-dimensional ...

  5. Hydraulic diameter - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_diameter

    The hydraulic diameter, D H, is a commonly used term when handling flow in non-circular tubes and channels. Using this term, one can calculate many things in the same way as for a round tube. Using this term, one can calculate many things in the same way as for a round tube.

  6. Pipe marking - Wikipedia

    en.wikipedia.org/wiki/Pipe_marking

    Example of pipe marking through colors and symbols (arrows) to indicated pipe contents (colors) and flow direction (arrows). Pipe marking on a natural gas pipe In the process industry , chemical industry , manufacturing industry , and other commercial and industrial contexts, pipe marking is used to identify the contents, properties and flow ...

  7. Moody chart - Wikipedia

    en.wikipedia.org/wiki/Moody_chart

    In engineering, the Moody chart or Moody diagram (also Stanton diagram) is a graph in non-dimensional form that relates the Darcy–Weisbach friction factor f D, Reynolds number Re, and surface roughness for fully developed flow in a circular pipe. It can be used to predict pressure drop or flow rate down such a pipe.

  8. Hydraulic analogy - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_analogy

    Hydraulic systems are deceptively simple: the phenomenon of pump cavitation is a known, complex problem that few people outside of the fluid power or irrigation industries would understand. For those who do, the hydraulic analogy is amusing, as no "cavitation" equivalent exists in electrical engineering.

  9. File:Hydraulic accumulator (symbol).svg - Wikipedia

    en.wikipedia.org/wiki/File:Hydraulic_accumulator...

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