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Plumbing originated during ancient civilizations, as they developed public baths and needed to provide potable water and wastewater removal for larger numbers of people.. The Mesopotamians introduced the world to clay sewer pipes around 4000 BCE, with the earliest examples found in the Temple of Bel at Nippur and at Eshnunna, used to remove wastewater from sites, and capture rainwater, in wells.
By extension, it may also refer to an office or organization, as well as the maintenance of computer storage systems.  The basic concept can be divided into domestic housekeeping, for private households, and institutional housekeeping for commercial and other institutions providing shelter or lodging, such as hotels, resorts, inns, boarding ...
In architecture, a vault (French voûte, from Italian volta) is a self-supporting arched form, usually of stone or brick, serving to cover a space with a ceiling or roof. As in building an arch, a temporary support is needed while rings of voussoirs are constructed and the rings placed in position.