Adaptive Study of Organizing Requirements of Physical – spatial Structure of Cities Ports of Entry from the Perspective of User Groups and by Using Sustainable Place Model, Case study: Southern East of Tehran

The width of cities’ entry ports is the result of overlapping urban and suburban environments, or in the case of Metropolises, it is the outcome of overlapping city and urban areas. In the past, when communication technology was not available to present a subjective and tangible image of places, ports of entry were the first visual representation that the travelers were faced with at the city of destination. Therefore, city planners always attempted to build city gates and Ramparts in order to impress the outsiders. Depending on the requirements of entry ports, various activities and functions were formed. In short, a port of entry was a place of its own with the ability of being memorable and a place for gathering of people. However, during the recent decades of universal development of cities, advances in technology, industry and transportation of goods, services and passengers, and long distances between city entrance and city hubs, the quality of City borders and ports of entry has been downgraded. City districts have different kinds of visual and noise pollution, so that they have become one of the most dissonant parts of the city. Ports of entry have turned into poor quality spaces for car traffic utilities for road - users, and also uses that were disadvantages to the city. As a result, the quality of ports of entry of many cities in Iran are severely downgraded in many aspects; and this manifested in cases such as disorganization, uncertain position of these areas in city hierarchy, simplistic and negligent approaches to organizing City spaces, and many other issues. This issue is intertwined with many other problems, especially in a Metropolis such as Tehran, in which low-income population of immigrants are one of the challenging problems. Furthermore, destruction of agricultural lands and Gardens surrounding the city, disorganized construction of residential buildings, development of residence locations of delinquents and abandoned areas, and sanitary waste disposal sites are all essential elements that constitute the true function of Tehran’s ports of entry. Today, the most common type of a special communication, proximity, does not exist as a form of communication with the outside of the city in Ports of entry. This issue is largely due to imprecise physical borders between the city and its outside environment, and the result of gradual development of the city beyond its service and legal boundaries. However, the method of spatial communication in old cities of Iran was this Setting up walls and boundaries circling the city prevented the outpouring of City elements to its external environment, and the City front gates were a form of communication between the city and its surrounding nature (Bahraini, 2003, 21). Therefore, organizing these spaces is not only a necessity in terms of a structure, but it is also critical to social and cultural context of the city. This is due to the fact that City’s entrance is a representation of what is inside the city, and it creates a strong mental image of the city in the Traveler’s mind. In this regard, a guiding theory for organizing City spaces is necessary. The main goal of this study is to examine the true requirements of various social groups that use the city entrances, and to see if they are consistent with the sustainable place theory, which is an updated and relevant in the subject of designing city spaces. This is a descriptive - analytical study, and it uses field study methods. The results of this study show that expectations and requirements of different social groups are consistent with the components of sustainable place theory. Therefore, the main aim of this study is to adapt the opinions and needs of various user groups to the theoretical model of sustainable place. By doing this, this study seeks to test this model in the physical - spatial organization of cities’ entry ports, and to do so in a practical sense and in accordance with the users’ needs and organizing and renovating programmes. Also, for a review of scientific literature, Tehran’s South eastern ports of entry (Garmsar - Tehran) are chosen as the capital to help in recognizing the most important design strategies as the main objectives based on prevalent theoretical basics of research.