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An urban area [a] is a human settlement with a high population density and an infrastructure of built environment. This is the core of a metropolitan statistical area in the United States, if it contains a population of more than 50,000. [1] Urban areas originate through urbanization, and researchers categorize them as cities, towns ...
Peri-urban areas (also called urban space, outskirts or the hinterland) are defined by the structure resulting from the process of peri-urbanisation.It can be described as the landscape interface or ecotone between town and countryside, [2] [3] or also as the rural—urban transition zone where urban and rural uses and functions mix and often clash. [4]
Semi-detached. A semi-detached house (often abbreviated to semi) is a single-family duplex dwelling that shares one common wall with its neighbour. The name distinguishes this style of construction from detached houses, with no shared walls, and terraced houses, with a shared wall on both sides. Often, semi-detached houses are built in pairs in ...
The urbanization of the United States occurred over a period of many years, with the nation only attaining urban-majority status between 1910 and 1920. [2] Currently, over four-fifths of the U.S. population resides in urban areas, a percentage which is still increasing today. [2] The United States Census Bureau changed its classification and ...
An urban area is defined by the Census Bureau as a contiguous set of census blocks that are "densely developed residential, commercial, and other nonresidential areas". [ 1 ] Urban areas consist of a densely-settled urban core, plus surrounding developed areas that meet certain density criteria. Since urban areas are composed of census blocks ...
Under the recommendation of the Seventh Central Pay Commission, the CCA classification was abolished in 2008. The earlier HRA classification of cities was changed from A-1 to X; A, B-1, and B-2 to Y; and C and unclassified cities to Z. [2] [3] [4] X, Y, and Z are more commonly known as Tier-1, Tier-2, and Tier-3 cities, respectively.
The typical 5-axle tractor-trailer combination, also called a "semi" or "18-wheeler", is a Class 8 vehicle. [29] Standard trailers vary in length from 8 ft (2.4 m) containers to 57 ft (17 m) van trailers, with the most common length being the 53 ft (16 m) trailer. [30] Specialized trailers for oversized loads can be considerably longer.
Rural area. In general, a rural area or a countryside is a geographic area that is located outside towns and cities. [1] Typical rural areas have a low population density and small settlements. Agricultural areas and areas with forestry are typically described as rural, as well as other areas lacking substantial development.