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  2. Emery (rock) - Wikipedia

    en.wikipedia.org/wiki/Emery_(rock)

    Emery, or corundite, is a dark granular rock used to make an abrasive powder. The rock largely consists of corundum (aluminium oxide), mixed with other minerals. Industrial emery may contain a variety of other minerals and synthetic compounds. Crushed or naturally eroded emery (known as black sand) is used as an abrasive. Turkey and Greece are ...

  3. Glossary of civil engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_civil_engineering

    Also Abrams' water-cement ratio law. A law which states that the strength of a concrete mix is inversely related to the mass ratio of water to cement. As the water content increases, the strength of the concrete decreases. abrasion The process of scuffing, scratching, wearing down, marring, or rubbing away a substance or substrate. It can be intentionally imposed in a controlled process using ...

  4. Engineering drawing abbreviations and symbols - Wikipedia

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

    Many corporations have such standards, which define some terms and symbols specific to them; on the national and international level, ASME standard Y14.38 [1] is one of the standards. Australia utilises the Technical Drawing standards AS1100.101 (General Principals), AS1100-201 (Mechanical Engineering Drawing) and AS1100-301 (Structural ...

  5. Glossary of structural engineering - Wikipedia

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

    Please see Glossary of engineering for a broad overview of the major concepts of engineering. Most of the terms listed in glossaries are already defined and explained within itself. However, glossaries like this one are useful for looking up, comparing and reviewing large numbers of terms together.

  6. Glossary of engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_engineering

    Glossary of aerospace engineering This article includes an engineering-related list of lists . If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.

  7. Construction engineering - Wikipedia

    en.wikipedia.org/wiki/Construction_engineering

    Construction engineering, also known as construction operations, [1] is a professional subdiscipline of civil engineering that deals with the designing, planning, construction, and operations management of infrastructure such as roadways, tunnels, bridges, airports, railroads, facilities, buildings, dams, utilities and other projects. [2]

  8. Lapping - Wikipedia

    en.wikipedia.org/wiki/Lapping

    A piece of lead may be used as the lap, charged with emery, and used to cut a piece of hardened steel. The small plate shown in the first picture is a hand lapping plate. That particular plate is made of cast iron. In use, a slurry of emery powder would be spread on the plate and the workpiece simply rubbed against the plate, usually in a ...

  9. Engineering, procurement, and construction - Wikipedia

    en.wikipedia.org/wiki/Engineering,_procurement...

    Various abbreviations used for this type of contract are LSTK for lump sum turn key, EPIC for engineering, procurement, installation & commissioning and EPCC for engineering, procurement, construction and commissioning. Use of EPIC is common, e.g., by FIDIC and most Persian Gulf countries. Use of LSTK is common in the Kingdom of Saudi Arabia.