Cities are in a constant process of change and rearrangement of its different parts
Cities are in a constant process of change and rearrangement of its different parts, which are impulsively developed or intentionally planned under diverse socio-economic and political situations in different period (Khan and Nilufar, 2008). Dhaka, the capital of Bangladesh, has experienced numerous physical and functional renovations. Dhaka characterizes a composite urban form developed through ages. Certainly, above the level of technology and economic condition of the population, the pattern of aerial growth and the urban form of Dhaka have been controlled largely by the physical conformation of the landscape in and everywhere the city (Islam, 1996). Dhaka city has been constantly developed without any particular planning application. The growing city appears to have unveiled a series of informal and organic spatial patterns. For this some parts of the city have been planned as residential areas for the determination of to deliver the basic services to their inhabitant. Over the history, Dhaka city develops from a medieval interchange town to metropolis. However, the main portions of Dhaka city are organic in nature. The pattern that exits in the historic city is the twisting and complicated street network, constantly twisted in and out, and was convoluted to an extreme degree in some places. The organic charm of the old part of Dhaka is mainly unique because of the density of its built-up areas in contrast to the bagginess of the later organic expansions (Khan and Nilufer 2008). With the formation of Dhaka Improvement Trust in 1956 (which was converted into the Rajdhani Unyayan Kartripakkha in 1987) greater concern and care was commenced in road construction and planning the development of the city. The DIT improved the Gulshan Model Town in 1961, Banani in 1964, and Uttara in 1965 and Baridhara in 1972 (though first conceived in 1962). The Dilkusha Gardens contiguous to Motijheel came to be overwhelmed by the ever-growing commercial requirements. The study of the physical growth of the city displays that from the early stage of their growth, the planned residential areas always persisted on the edge of the city.