Definitions starting with u

• UNESCO landmark The structure is listed on UNESCO's registry of World Heritage Sites.
• u-shaped stairway Stairs which turn twice between successive floors, forming a U-shape.
• ube A medium shade of grayish purple.
• unaligned floor A floor level which is vertically offset from adjoining floor levels by at least half a meter.
• unbuilt Construction is never expected to occur.
• under construction An object is in the midst of being built and is not yet ready for use.
• under demolition Demolition has begun, and is actively progressing or expected to resume.
• under renovation A thorough upgrade is underway which affects the whole structure.
• underground building A building divided into regular floor spaces which does not have any usable floor space at or above ground level.
• underground mine A cavity or network of tunnels dug under the earth for extraction of minerals.
• underground station A below-ground space which provides access to a tunnel system, and which has no buildings over it.
• underwater building A fixed inhabitable building whose occupiable space is at least 90% underwater.
• underwear store Retail space specializing in bras, lingerie, intimate apparel, and other forms of underwear.
• unglazed window openings Open window apertures in a facade with no glass.
• uniform resource identifier A string of characters used to locate a particular piece of content on the Internet.
• uniform store A clothing store specializing in work uniforms.
• uninterrupted power supply Facilities for ensuring continued power in the case of a blackout in the normal supply.
• unisex restrooms Toilet facilities designated for use by any sex.
• unit One of multiple evenly divided sections of a building interior intended for a single user or group of related users.
• unit amenity Features common to individual units in a building.
• unitarian church A house of worship in the Unitarian faith.
• units Quantities of modular divisions within a structure for separate users.
• university An institution of research and high-level education.
• university Classroom space for higher education at an institution which grants bachelor's and higher degrees.
• university chapel A house of worship directly affiliated with a university.
• university office Working space for teachers and administrators in a college or university.
• unrenovated Space more than 5 years old which has not been significantly renovated in the past 5 years.
• unspecified tenancy design Built space designed flexibly so that there is little difference between accommodating one or more tenants.
• uranium mine A site where naturally occurring uranium ore is extracted from the earth.
• urea-formaldehyde foam Sprayed insulation consisting of urea-formaldehyde, a yellowish synthetic resin.
• urea-formaldehyde rigid panels Hard insulating panels made from polyurethane, a common plastic with exceptionally high insulation properties.
• urology Clinical space where doctors treat or advise patients for conditions of the urinary tract or male reproductive system.
• usable floor area The total area of all open interior spaces within an object.
• usage The general purpose intended for a structure, in whole or in part.
• usage begins Operation begins in at least one of the assigned uses of a structure or other object.
• usage event Events associated with the usage, management, or maintenance of an object..
• usage level The importance of a particular usage within a place.
• usage zone A part of a structure defined by the extent of one usage.
• user-generated website An internet page where content is supplied by multiple users of unknown or varying reliability.
• utilities Structures which serve the collection and distribution of energy and basic necessary materials.
• utility distribution Sites engaged in the spreading and transmission of utilities.
• utility vehicle depot A place for the storage of service or construction vehicles when not in use.

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