The effectiveness of regulations of detailed plans on the renovation and improvement of the dilapidated fabric of Isfahan city

Effectiveness of regulations of detailed plans

on the renovation and improvement of the dilapidated fabric of Isfahan city

Abstract

Given the problems existing in big cities such as the expansion of the city on the valuable agricultural lands around and the physical-spatial wear and tear of the inner tissues of the city, it is necessary to adopt methods and strategies to establish the sustainable development of cities. In this regard, the endogenous urban development strategy, i.e. paying attention to improving the texture and renovation in the worn-out inner tissues of the cities - due to the existence of potential and actual powers in them - is a method that can solve the spatial and physical problems of the cities. But one of the obstacles to access the sustainable development of cities in these contexts is the rules and regulations of detailed plans, which in most cases, without scientific and specialized foundations, are a cumbersome obstacle for the renovation of such contexts. Among these rules and regulations are the height rules of buildings. The present research aims to investigate the effectiveness of the rules and regulations of detailed projects on the improvement and renovation of housing in the dilapidated context of Isfahan city, so that by identifying these effects, the limitations of the laws can be identified and the solutions for their correction expressed. In the current research, after presenting the height components in worn-out structures and the design of 6 models, relevant solutions are provided. Keywords: urban planning regulations, detailed plan, height criteria, worn-out structure, improvement, renovation. Introduction: Paying attention to the renovation of worn-out urban structures can provide a suitable framework for realizing the sustainable development of today's cities. Since one of the obstacles to achieving sustainable urban development is the restrictive rules and regulations of urban planning, the present research tries to investigate the effect of the rules and regulations of the height of detailed plans on the improvement and renovation of housing in the dilapidated tissues of Isfahan city. For this purpose, in the first chapter of the thesis, the generalities of the research, including the statement of the problem, the purpose of the research, the research question and hypothesis, and the introduction of related key terms are given. The second and third chapters of the present research are dedicated to presenting the theoretical and technical foundations of the research, respectively, including the introduction of sustainable development, identification of urban contexts and theories of urban context renewal, determination of elevation methods and identification of effective components in the elevation of buildings. The fourth and fifth chapters describe the experiences of different countries of the world and Iran in the field of preparing urban development plans, and the sixth chapter presents the general and specific criteria for the height of urban structures. In the seventh chapter, the city of Isfahan and its worn-out textures, population and urban development plans are known in it. The eighth chapter describes the factors and components of shading in the pieces in the worn fabric of Isfahan city and presents 6 practical-ideal models and examines the mentioned items in two worn fabric samples. The final chapter also belongs to the presentation of the general results of the research and proposed solutions. During recent decades, rapid growth in large cities and megacities, which is mainly caused by population growth, due to natural population growth and migration from villages and small towns to them, has caused a great transformation in the spatial-physical structure and the economic and social conditions of life in these cities. On the one hand, the expansion of the city in the periphery and mainly on the agricultural lands and gardens has caused the destruction of the valuable resources of the green and natural environment of the cities, which has made the need to pay attention to solutions to prevent the destruction of the agricultural lands around the cities even more vital. On the other hand, under the influence of the horizontal expansion of the city, the inner fabric of the cities have faced many problems, including wear and tear. The central location and the existence of some required urban infrastructures in the inner tissues of the city has doubled the need to pay attention to these tissues.

Given these two categories of spatial-physical issues and problems of large cities (1- expansion of the city on surrounding valuable agricultural lands, 2- spatial-physical exhaustion of the inner city tissues), the need to adopt methods and strategies for the development of cities that can organize these two categories of issues and problems raised is even more necessary In this regard, various strategies are taken into consideration by managers and urban planners, among which, the endogenous urban development strategy, i.e.In this regard, different strategies are taken into consideration by managers and urban planners, among which, the endogenous urban development strategy, i.e. paying attention to improving the fabric and renovating housing in the inner and worn out fabrics of cities, is a strategy and method that can solve these two categories of spatial-physical issues and problems of cities simultaneously. Among the reasons that justify the renovation and improvement of the worn-out and inner tissues of cities as a principled and scientific strategy and method to solve the problems and problems of cities is the existence of potential and actual abilities in them. Among these capabilities, we can point out the existence of required urban infrastructures, including water and sewage, electricity, gas, telecommunications, and relatively favorable network of communication roads, easy access of these tissues to commercial, cultural and educational centers, which is due to their central position in the structure of cities. Unfortunately, despite these facilities and opportunities that the inner tissues of the cities have compared to the surrounding lands, due to some obstacles, they have not been able to play an effective role in the cycle of sustainable urban development. Today, the economic, social, cultural, health and physical problems existing in the inner and mostly worn-out tissues of the cities have caused the original and native residents of these areas, who had relatively favorable economic capabilities, to leave the inner tissues of the city. Migrate to peripheral and new urban areas. Other old residents of Baft, who either did not have the necessary economic power to migrate from Baft or due to some issues, have replaced the economically capable strata living in Baft along with immigrants. At present, the residents of dilapidated urban tissues mostly do not have the ability to renovate and improve their housing and the fabric of their neighborhood, nor do private sector investors and urban housing producers have the possibility to participate in the renovation and improvement of dilapidated tissues due to the existence of some inefficient rules and regulations of detailed urban plans. Despite the potential and actual abilities that the dilapidated inner city tissues have for renovation and development, for many reasons, these potential and actual abilities have not been able to do this. Place the context in the development circuit. Among these reasons, the rules and regulations of the detailed plans, which have been formulated for the systematization of urban constructions, in most cases, have been an obstacle for people to renovate such contexts. Against the attractive factors and opportunities of investment in the outdated contexts, the rules and regulations of the detailed plans are one of them. has created the conditions that such tissues are placed in a cycle and closed circuit and their level and area are increasing day by day in the cities.

In this regard, one of the most important measures in order to optimally use the potential and actual capacities of worn-out urban tissues is to have a scientific and technical attitude to some rules and regulations of detailed plans and their modification in the direction of renovation and improvement of worn-out urban tissues. Among these rules and regulations of detailed plans, which can be mentioned as a big obstacle in the renovation of worn-out structures, are the height rules of buildings. Elevation rules of the detailed plan of Isfahan due to the characteristics of the worn and old textures of Isfahan city, including the granularity and segmentation of building blocks and building blocks and the network of road structures, the texture and the way the building is placed in the plot. It is ambiguous and far from transparency, and different interpretations and interpretations are taken from it according to different people and experts. Therefore, it can be said that if there are disturbances in the development and urban development of cities (especially in dilapidated structures), one of the most important reasons should be "searched for in the defects, ambiguity, conflict and inconsistency of urban planning regulations, the absence or lack of favorable regulations and appropriate to the construction needs and management of urban and rural development, defects and deficiencies related to the implementation of regulations or supervision of their implementation" (Ahsan, 1382, 9). Therefore, it can be said that it is possible to provide a platform for sustainable development and operationalize the endogenous urban development strategy by amending the existing laws; In this way, by creating harmony in the laws, the field of better use of the existing spaces is provided.

Regarding the emphasis of the third development plan in the direction of improving and renovating and revitalizing worn-out and problematic urban tissues, the author of this study aims to investigate the impact of regulations and detailed plans on the worn-out urban tissues of Isfahan in order to help urban planners, city planners and urban managers in this field, and it is hoped that these studies will have a significant impact on the future measures to organize these tissues. be