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  2. Eurocode 8: Design of structures for earthquake resistance

    en.wikipedia.org/wiki/Eurocode_8:_Design_of...

    Section 3 of EN 1998-1 gives the rules for the representation of seismic actions and for their combination with other actions. Certain types of structures, dealt with in EN 1998-2 to EN 1998-6, need complementing rules which are given in those Parts. Section 4 of EN 1998-1 contains general design rules relevant specifically to buildings.

  3. Richter scale - Wikipedia

    en.wikipedia.org/wiki/Richter_scale

    The Richter scale [1] (/ ˈ r ɪ k t ər /), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale". [3]

  4. List of EN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_EN_standards

    EN 1: Flued oil stoves with vaporizing burners. EN 2: Classification of fires. EN 3: Portable fire extinguishers. EN 14: Dimensions of bed blankets. EN 19: Industrial valves – Marking of metallic valves. EN 20: Wood preservatives. EN 26: Gas-fired instantaneous water heaters for the production of domestic hot water.

  5. Seismic magnitude scales - Wikipedia

    en.wikipedia.org/wiki/Seismic_magnitude_scales

    Seismic magnitude scales are used to describe the overall strength or "size" of an earthquake. These are distinguished from seismic intensity scales that categorize the intensity or severity of ground shaking (quaking) caused by an earthquake at a given location. Magnitudes are usually determined from measurements of an earthquake's seismic ...

  6. European Standard - Wikipedia

    en.wikipedia.org/wiki/European_Standard

    European Standards, [1][2] sometimes called Euronorm (abbreviated EN, from the German name Europäische Norm, "European Norm"), [3][4] are technical standards which have been ratified by one of the three European Standards Organizations (ESO): European Committee for Standardization (CEN), European Committee for Electrotechnical Standardization ...

  7. Engineering drawing abbreviations and symbols - Wikipedia

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

    In a feature control frame (FCF), the ⌀ symbol tells you that the tolerance zone for the geometric tolerance is cylindrical. Abbreviations for "diameter" include ⌀, DIA, and D. D. diameter; delta. Abbreviations for "diameter" include ⌀, DIA, and D. For delta usage, see for example "delta notes". DIA[2] diameter.

  8. European Committee for Electrotechnical Standardization

    en.wikipedia.org/wiki/European_Committee_for...

    CENELEC (French: Comité Européen de Normalisation Électrotechnique; English: European Committee for Electrotechnical Standardization) is responsible for European standardization in the area of electrical engineering. Together with ETSI (telecommunications) and CEN (other technical areas), it forms the European system for technical ...

  9. Census - Wikipedia

    en.wikipedia.org/wiki/Census

    A census (from Latin censere, 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given population, usually displayed in the form of statistics. This term is used mostly in connection with national population and housing censuses; other common censuses include ...

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