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  2. Upuaut Project - Wikipedia

    en.wikipedia.org/wiki/Upuaut_Project

    Upuaut Project. The Upuaut Project was a scientific exploration of the so-called "air shafts" of the Great Pyramid of Giza, which was built as a tomb for Fourth Dynasty pharaoh Khufu. The Upuaut Project was led by Rudolf Gantenbrink under the auspices of the German Archaeological Institute in Cairo during three campaigns (two in 1992 and one in ...

  3. Column - Wikipedia

    en.wikipedia.org/wiki/Column

    Column of the Gordon Monument in Waterloo. A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. The term column applies especially to a large round support ...

  4. IT Grade - Wikipedia

    en.wikipedia.org/wiki/IT_Grade

    An IT grade is an internationally accepted code system for tolerances on linear dimensions. Such code systems may be used to produce interchangeable parts. In engineering, the word tolerance refers to a range of allowable dimensions or values. Standard tolerance grades are a group of tolerances for linear sizes characterized by a common identifier.

  5. Trump International Hotel and Tower (Chicago) - Wikipedia

    en.wikipedia.org/wiki/Trump_International_Hotel...

    On top of these caisson shafts and pillars, an 8,400-short-ton (7,600 t) concrete pad foundation was built to support the building's spine. [7] The building has 241 caissons, and the majority of the caissons only descend 75 feet (22.9 m) into hard clay.

  6. List of golf equipment manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_golf_equipment...

    Acushnet Company; Adams Golf; Aldila (shafts); Antigua Apparel; Ben Sayers; Bettinardi Golf; Bridgestone Golf; Buggies Unlimited; Callaway Golf Company; Cleveland ...

  7. Shaft (golf) - Wikipedia

    en.wikipedia.org/wiki/Shaft_(golf)

    The shaft of a golf club is the long, tapered tube which connects the golfer's hands to the club head. While hundreds of different designs exist, the primary purpose of the golf shaft remains the same: to provide the player with a way to generate centrifugal force in order to effectively strike the ball. When properly gripped the player can hit ...

  8. List of international sports federations - Wikipedia

    en.wikipedia.org/wiki/List_of_international...

    This is a list of international sports federations, each of which serves as a non-governmental governing body for a given sport and administers its sport at a world level, most often crafting rules, promoting the sport to prospective spectators and fans, developing prospective players, and organizing world or continental championships.

  9. Vertical-axis wind turbine - Wikipedia

    en.wikipedia.org/wiki/Vertical-axis_wind_turbine

    Vertical axis wind turbine offshore. A vertical-axis wind turbine (VAWT) is a type of wind turbine where the main rotor shaft is set transverse to the wind while the main components are located at the base of the turbine. This arrangement allows the generator and gearbox to be located close to the ground, facilitating service and repair.