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  2. IEC 61355 - Wikipedia

    en.wikipedia.org/wiki/IEC_61355

    The main application is the construction, erection and operation of industrial plants where the number of documents of all engineering disciplines may sum up to some 100,000 documents. During 2024, the new cross-standard ISO / IEC 81355 [ 2 ] will be published and will replace the second edition of IEC 61355-1 published in 2008.

  3. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15. The number is sometimes followed by a letter, indicating that components are grouped or matched with each other, e.g. R17A, R17B. The IEEE 315 standard contains a list of Class Designation Letters to use for electrical and electronic ...

  4. Engineering drawing abbreviations and symbols - Wikipedia

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

    The same CAGE code can change owners over the years. For example, a CAGE code that formerly referred to a certain Martin Marietta site will now refer to Lockheed Martin at that same site (although the buildings may have been replaced and the signage may say different names). C-C or C-TO-C: centre-to-centre; on centres

  5. Model rocket motor classification - Wikipedia

    en.wikipedia.org/wiki/Model_rocket_motor...

    The designation for a specific motor looks like C6-3.In this example, the letter (C) represents the total impulse range of the motor, the number (6) before the dash represents the average thrust in newtons, and the number (3) after the dash represents the delay in seconds from propelling charge burnout to the firing of the ejection charge (a gas generator composition, usually black powder ...

  6. List of Toyota model codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Toyota_model_codes

    Model code of a Toyota Yaris (XP150) written on the VIN plate. The following model codes have been used by Toyota. The letters of the model code is found by combining the letters of the engine code with the platform code. If the engine code and the platform code have two letters each, the middle letter is computed according to this formula: [1] [2]

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  8. Toyota model codes - Wikipedia

    en.wikipedia.org/wiki/Toyota_model_codes

    Every Toyota vehicle has a model code which describes the basic vehicle (e.g. Corolla), its generation and major options (engine type, gearbox type, body style, grade level). The model codes fall into three periods, 1937 to late 1950s, late 1950s to late 1970s and late 1970s to present.

  9. Glossary of structural engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_structural...

    For example, the particles of stone used to make concrete typically include both sand and gravel. Aggregate (construction) – Construction aggregate is a broad category of coarse to medium grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates.