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  2. Vaulted sidewalk - Wikipedia

    en.wikipedia.org/wiki/Vaulted_sidewalk

    Vaulted sidewalks, also called sidewalk vaults and areaways are sidewalks that are not placed directly on the ground. Rather, there is an empty space below them where the ground level used to be. This may happen where the street level has been raised over time, or where basements are extended, or as utility vaults.

  3. Dungeon - Wikipedia

    en.wikipedia.org/wiki/Dungeon

    The dungeons of Blarney Castle, Ireland. A dungeon is a room or cell in which prisoners are held, especially underground. Dungeons are generally associated with medieval castles, though their association with torture probably derives more from the Renaissance period.

  4. Utility vault - Wikipedia

    en.wikipedia.org/wiki/Utility_vault

    A utility vault is an underground room providing access to subterranean public utility equipment, such as valves for water or natural gas pipes, or switchgear for electrical or telecommunications equipment. A vault is often accessible directly from a street, sidewalk or other outdoor space, thereby distinct from a basement of a building. [1] [2]

  5. Tunnels in popular culture - Wikipedia

    en.wikipedia.org/wiki/Tunnels_in_popular_culture

    It still has a 14th-century vault below it that was the crypt (and prison) of the former building. A second tunnel (in which a pig was once lost) heads from the Castle for Carrow Priory (TM242073 area), a Benedictine nunnery whose scant 12th century remains on the outskirts of Norwich are incorporated into a residence of the Colman family, near ...

  6. Keep - Wikipedia

    en.wikipedia.org/wiki/Keep

    A 19th-century reconstruction of the keep at Château d'Étampes. Since the 16th century, the English word keep has commonly referred to large towers in castles. [4] The word originates from around 1375 to 1376, coming from the Middle English term kype, meaning basket or cask, and was a term applied to the shell keep at Guînes, said to resemble a barrel. [5]

  7. Utility tunnel - Wikipedia

    en.wikipedia.org/wiki/Utility_tunnel

    A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications utilities like fiber optics , cable television , and telephone cables are also sometimes carried.

  8. Manhole - Wikipedia

    en.wikipedia.org/wiki/Manhole

    A manhole (utility hole, maintenance hole, [1] or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes, typically protected by a manhole cover , are often used as an access point for an underground public utility , allowing inspection, maintenance, and system upgrades.

  9. CRH plc - Wikipedia

    en.wikipedia.org/wiki/CRH_plc

    CRH entered the United States in 1978 by buying Amcor, a concrete products group in Utah which would then form the basis of the company's U.S. division, which is now called Oldcastle Inc. Subsequent large purchases in the US included Callanan Industries, a New York State based aggregates and asphalt producer in 1985.