The Core frame model is a model showing the urban structure of the Central Business District of a town or city. The model was first suggested by Ronald R. Boyce and Edgar M. Horwood in 1959.Edgar M. Horwood and Ronald D. Boyce, "The CBD Core-Frame Concept," Chapter 2 in their Studies of the Central Business District and Urban Freeway Development (Seattle: University of Washington Press, 1959).
The model includes an inner core where land is expensive and used intensively, resulting in vertical development. This area is the focus of the transport system and has a concentrated daytime population. The outer core and frame have lower land values and are less intensively developed.Goodall, B. (1987) The Penguin Dictionary of Human Geography. London: Penguin. The various land uses are linked to the bid rent theory. The zone of assimilation and zone of discard are together called the zone of transition.
See also Concentric zone model Sector model Multiple nuclei model
Notes
Further reading Waugh, David Geography: An Integrated Approach 1995