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Smart City Master Plan Smart cities, at the first stage had been defined as cities that adopt ICT in all aspect of urban spaces. However, during the last three decade,  the approach of urban initiatives turned into employing ICT as one of the main infrastructure of cities. Reviewing the literature around the phenomena of smart cities along with smart city projects experiences indicate the new generation of smart cities. Novel paradigms and concepts are emerging through the development of technology that directly affect urban initiatives. Therefore, the definition of smart cities have a dynamic character though to its integration with technology.
Accordingly, with the evolution of smart cities, urban planning, urban design and urban government had been affected ultimately, which result a new approach into smart cities and urban initiatives as adopting collaborative cities and intelligence cities.  Therefore, this research aim to review definitions of smart cities during the last years within academic literature along with urban projects experiences to explore the definition of new generation of smart cities. To do so, smart cities definition had been explore through academia and experiments and the new concepts emerged in the urban literature been clarified in order to shed the light on how urban design and planning have to reform in Iran to meet the new centuries requirements.

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One of the constant concerns of urban design circles is to search and analyze the causes of the failure of urban development projects. In other words, the question is usually asked why such projects, which are sometimes based on theories and by the elites of the profession, have not led to the production of desirable products in practice? Exploration and analysis of the causes of failure of urban design projects and the very high importance of time and how to implement the plan in these projects, caused the attention of experts to the urban design process, because it seemed that the solution to this problem in the causal relationship between Process quality and product quality. Also, some researchers introduce criteria and indicators affecting the feasibility of urban design, the most important of which, which are also addressed in this study, can be planning and design factors, factors Managerial, economic factors, social and cultural factors, legal factors, ethical factors mentioned. This research is a review of articles and theories in this field.

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Introduction: In the present century, with the expansion of urbanization and urban development, impermeable surfaces (asphalt, concrete) have also increased and these changes have caused runoff to flow in the city and consequently problems such as traffic disruption, pollution of receiving waters, Reduce groundwater levels and the formation of floods. Traditional methods are not very effective today and in some cases even exacerbate these problems. Therefore, the need for new and creative methods to manage runoff is felt more than ever.
Findings: Three approaches including: water-sensitive urban design, low impact development and sustainable urban drainage systems are among these new approaches that are based on sustainability principles and have multiple benefits (maintaining environmental conditions and completing the urban water cycle) in addition to runoff management.
Method: In terms of purpose, this research is fundamental and from the point of view of analysis method, it is considered as one of the theoretical researches in which by using internet resources and library documents, an attempt is made to identify the concepts, goals and benefits of these three approaches.
Conclusion: Finally by extracting common goals, the success rate of achieving each goal is determined by using the utility matrix, and in addition to formulating a conceptual model of sustainable runoff management, a table of strategies for achieving this approach has been provided.
 

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Problem statement: Today, the issue of thermal comfort has been raised as one of the important factors in the quality of urban open spaces along with physical factors. Basically, citizens tend to be in spaces where they feel thermally comfortable. Due to the effect of various parameters in urban open spaces that affect the thermal comfort of users and the lack of codified principles in this regard, the creation of such a space in an urban area has become difficult to identify and meet the thermal needs of city designers.
Results: Studies showed that in the open spaces of the urban environment, due to the influence of various factors, absolute thermal comfort conditions can not be achieved throughout the day; Rather, thermal comfort conditions are expected to be provided for certain hours. To improve thermal comfort in urban open spaces, elements such as vegetation, water, proper orientation, type of materials, color, activity rate and coverage rate are important. It is obvious that by using these factors and observing the time of presence in the open space of Rudkenar sidewalk, thermal comfort will be provided in it.
Method: The research is applied-developmental in terms of purpose; And is based on analytical method. In this method, in order to study the microclimate, the software simulation technique (Envi met) has been used as one of the most complete simulation software in the field of urban microclimate, and the values ​​of PMV thermal comfort index (average vote prediction) using simulation in different parts of the route The designed sidewalk that has different conditions and situations has been calculated and the changes of two factors of temperature and radiation and its effect on the thermal comfort of Khorramabad river in Lorestan in summer have been studied.
Conclusion: Finally, it was found that factors such as choice of direction, walking time, sidewalk width, the presence of trees and vegetation, shade and water, as well as some user characteristics such as metabolic rate and activity, coverage rate in terms of thermal comfort in this season of the year Has been impressive.
 

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Aims: there is a need for educational studies due to the 21st-century paradigm shift in higher education toward the social responsibility of universities and the changing challenges of urban design and planning. This article aims to provide the background for redesigning and adapting the educational program of urban design to the social responsibility approach, and it also identified the current teaching and learning methods applied in urban design master’s programs.
Methods: the study reviews the university social responsibility and urban design pedagogy literature to propose a social responsibility-based model for urban design education through expert discussion.
Findings: with regards to pedagogical approaches, there are four teaching-learning methods, including traditional education, project-based learning, service-learning, and sustainable education. Besides, the social-responsibility-based model for urban design education includes four steps, namely, values, management, practices, and impacts.
Conclusion: the fundamental difference between this approach with the current educational approaches of urban design is the matter of morality so that its underlying philosophy should be considered responsibility toward society and the environment, regardless of time and place boundaries.

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Aims: The purpose of this article is to explain the place of the human in urban design and the dimensions and qualities of human-oriented urban design and its evaluation in the area of ​​Tajrish Square in Tehran.
Methods: This research is a quantitative and qualitative approach and descriptive and analytical research methods and field research that has been done in theoretical and field sections, using documentary and library study methods, distribution of questionnaires and its statistical and qualitative analysis and field perceptions.
Findings: Urban design is a science, art, and profession that is the subject of organizing the environmental qualities of urban and public areas. This field can have different tendencies and approaches in technical, political, managerial, scientific, and social dimensions. The place of man in each of the urban design approaches can be varied depending on the principles of that approach. The modernist approach to man, the city, and urban design reduced man's place to a technical and universal phenomenon, regardless of social, cultural, or indigenous contexts.
Conclusion: The results of this study indicate that humanistic urban design is the study and design of public and public arenas in order to enhance environmental qualities as a vehicle to help human beings flourish and its qualities for application in the program. Urban planning and design are: identity and legibility, environmental sustainability, social, cultural, and economic sustainability, safety and security, efficiency and diversity, pedestrianism and ease of access, cohesion and integration, proportions and human scale, freedom, Flexibility, vitality, attractiveness and sensory richness, justice. In the case study, Tehran Tajrish Center, with valuable natural, historical, social, and cultural contexts, has several issues and problems, especially in the field of space and traffic. Analysis of this area, with the mentioned SWOT technique and qualities, can lead to the creation of urban spaces and a humane environment.

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Statement Problem: The discourse model of participatory design is proposed in the world as a solution for the redesign of urban contexts. Extensive destructions in the historical contexts of Iran are due to the lack of implementation of the urban design discourse.
Aim: This research explores the pattern of discourse creation in participatory design with the approach of citizenship education in the historical context of Kazerun.
Methods: The qualitative research approach was coded by categorizing the clusters of the participating community and snowball sampling into 3 open, axial and selective categories, then it was interpreted with the content analysis technique.
Results: The categories extracted from the interviews were included in 7 axial factors and in 2 selective reasons, including residents' ignorance and incorrect urban management.
Conclusion: Considering the effective factors in the citizens' ignorance (lack of understanding of the characteristics of the context, social and economic factors), the urban designer as a facilitator, at the beginning with the aim of making the participants aware of the historical context and creating a context for central participation, provided citizenship education then with preliminary education Urban design helps to turn the proposal into the ideas of the participants. Then moderates the ideas and codifies them in the form of integrated and comprehensive policies and helps the city management to communicate the implementation policies of participatory urban design and solve the problems caused by incorrect policies in the field of urban management, economic, design and security.

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Different people have different perceptions of physical space where movement and rest occur. In this regard, perception of three-dimensional space from the point of view of stationary and moving observers can be analyzed from different perspectives including the observer's favorable or unfavorable perception, persistency and recall capability of the perceived space, the influence of different design variables on the perception, etc. But one of the most important issues which has not attracted due attention in this area and will form the subject of the present study is that of deliberate distortions in the "perception of subjective depth and distance" of a path or space. Indeed, by using the perception of depth and distance and the deliberate distortions in the field of urban design, designers will be able to change this perception experience via informed arrangement of spatial qualities as appropriate in line with the overall design objectives. This way, they can represent a route as shorter or longer than its actual conditions in the minds of observers and users of space. In this paper, among various theoretical approaches about the human visual system function in relation to the perception of depth and distance, cue approach is discussed due to greater emphasis given to it in scientific literature published in recent years as well as its comprehensive theoretical perspective. Based on this approach, in the first part of this article, an attempt has been made to review and analyze the most significant components affecting the perception of depth and distance using a scientific approach via urban design perspective. These components can be integrated or reduced in order to directly control the relative amount of depth and distance perception in the physical space. In the second part, deliberate distortions and their application in design of physical-spatial structures of urban environment in a practical approach are discussed. Upon on the purpose of the study it is based on applied research. Due to complexity of depth and distance perception, we used the combination of exploratory and descriptive-analytical research as the methodology. Keywords: Urban Design, Perceptual Depth and Distance, Cue Approach, Deliberate Distortions, Practical Optical Illusions

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Problem :The design and form of the city in animation films and video games is one of the conceptual design elements that is formed to show the activity space of the characters and the place of events in the story world. Seeing the character in the space in which he acts leads to the recognition of both the characteristics of nature and identity. In this study, the urban design of the animated film Ralph Breaks the Internet is examined as a study example to identify and analyze the indicators of urban form in the interpretation of the film from the virtual space of the Internet and the video games Sugar Rush and Deadly Race.
Target: Therefore, the aim of the research is to know the indicators of urban design used in internet city spaces and games, so that their similarities and differences with realistic urban design for human life can be determined.
Method:A qualitative method with a descriptive-analytical approach was used in the implementation of the research. Also, the theories of Leo Brudy and Jenny Bavidage were taken into consideration in the study of the urban spaces of the games.
Findings:The findings of the research show that Internet City has transformative and disruptive capabilities according to its neighbourhoods, as well as Deadly Race with nostalgic/transformative capabilities and Sugar Rush are evaluated as nostalgic.
Result: In conclusion, considering that exaggeration and caricature are used in the conceptual design of the visual elements of the animation film, urban design in this work is an imaginary and exaggerated interpretation of the zero and one virtual space of the Internet, based on which the image of the Internet city is based on the moving image. It has been shown, while indicators such as physical elements, organization of urban arteries and infrastructures are designed based on responding to the needs of the characters and at the same time visual appeal to the audience, as well as the cultural and commercial goals of selling goods made from the elements and atmosphere of the film.

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Problem: This article unfolds a collective educational journey that while initially faced by serious doubts, ultimately received positive feedback from the students in an online urban design workshop.  During a rampant global pandemic, one of the two instructors communicating from overseas, who is experienced in teaching face-to-face courses, raised initial pedagogical concerns.
Aims: To remedy these, the two instructors dedicated the first part of the workshop to theorizing urban complexity.  Exposure to theory, while less common if not uncommon in design studios, removed the students’ initial misgivings.  Gaining student confidence boosted their spirit in crafting idiosyncratic interpretations based on personal memories, and paved the way toward assuming agency, and subsequently integrative learning.
Methods: This technique enabled students to connect discrete structural learning domains to produce more complicated outcomes, and by doing so experienced three states of mind.  Melting away initial doubts coincided with thematic arrangement.  Boosting confidence through conceptual connectivity and self-discovery, then, resulted in ebullience in designing through purposeful action.
Result: This article contributes to the scanty literature on coping mechanisms in the face of looming uncertainties both for students and instructors in teaching studios.

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Description: City as a text and urban design as the language of text creation, the constructive dimensions of the city are categorized into two levels: superstructure and deep structure. The superstructure of the city is the result of mental and internal deep constructions. Superstructure has no meaning without regard to deep structure.
Purpose: The current research aims to extract the components that influence the language of the city pattern, and seeks to find out what are the deep structural components of the language of the urban design pattern?
Method: The research has been done by descriptive analytical method and library studies.
Findings: The superstructure patterns identified in the research are mass-space pattern, usage and function pattern, and view pattern. Also, the identified dimensions of deep structures were studied in this research and the independent variables of each dimension that affect the superstructure patterns were identified. In total, 24 independent variables were discovered from urban deep structures and 45 dependent variables were discovered from the set of superstructures.
Conclusion: The most important dimension shaping the settlement is the cultural dimension, followed by the environmental dimension. Also, some superstructure patterns are affected by several deep structure dimensions. The independent variables found in this research were presented in the form of a diagram as influencing components on the language of the urban design pattern. As a strategy, it is recommended that the components found in this research be given special attention as a framework for the final design as a guide for the steps from cognitive studies to the presentation of the plan.

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Every unit which has identity for purposes of role and outward appearance in the geographical space, and its location of the place in the space that is specified, it could be accounted as a building that settlement should be figured as a type of these units. Housing, as one of the basic needs of mankind, has economical, social, and cultural characteristics. Being multidimensional, housing has found its place in the priorities of human life. Meanwhile, development of urban society has found its roots in the rural way of life. Rural housing due to its functional role and its underlying effects on the everyday›s life reserves its own special importance. The rural housing has a remarkable differences to city housing not only from outward appearance aspects but also from respected contains. These differences could be found only by study of compatibility of them with the around natural environment and different housing functions compatible with the environment and villagers activities and besides that the traditional experiences of construction. The rural houses for their residents prepare the necessary spaces for living, store of food and other articles, the place for domestic animals, and a place as a community center for communications, exchange of views and so on. In reality components and spaces forms the elements of house of residential unit and eventually define the functions of rural houses. The rural houses have different functions. The study and investigation of architecture and structures of rural houses not only can recognize the circumstances of construction and experiences of formers in the architectural harmony with the environment and climate but also can be as a light in the improvement road of rural houses in front of responsible persons and experts. In the investigation and recognition of rural settlements, typology of villages in one of the objects that for ease of rural development planning always should be considered. In principal, the rural typology is one of the main rural geographical subjects. Diversity in the type of villages is a consequence of differences of factors and phenomena which has been effective in coming into existence of villages. In human subjects, type of villages as compared with (with regard to) physical factors is more effective of the social and economic structures of villages, although the physical factors also play their role. The spatial establishment model of rural settlements for the reason of dependence of its most productive activities. The natural conditions and factors, more than the urban settlements can be influenced by these factors. The public fabric of rural settlements states the shape, form and model that are resulted from influence of different factors in the village land and the method of connection and interaction of these elements and their characteristics. In this manner, the skeleton fabric of these settlements is the representation of the disciplined method of houses and establishment of agricultural land and also quality of setting the roads and squares (road system) next to each other (saeidi, 53 ,2002). Distinction and differentiation of density rate and shape (form) of each village can help the nature recognition and also the social – economical differences that are ruling it. In this matter, rural housing is manifestation place of livelihood – living methods and eventually forces and environmental key factors and social- economical trends are effective on shaping up them. In this research, the method of study is based on field and document study, that documental method is including written document in the area of rural life and statistical resources. In the field study method for investigation of housing characteristics in the rural fabric, four principal methods of cluster sampling have been used. In this cluster category, it is tried the majority methods and also the ones from space point of view are usable and it is possible to use them in making model and repair for preservation of rural culturalheritage should be chosen. In choosing some models, regional native characteristics are considered in a way that housing as an outcome and product of architecture with the climatic conditioning of the zones are harmonized. Settlements of Semnan province in regard of natural environment characteristics and also from extent and population is confronted by the diversity. In this manner, for sampling, at the beginning, settlements of province based on population and four separated cities have been categorized in four population zones. Then for the reason of natural limitation establishment and forming of the settlements that following it in the fabric whole construction and rural housing has had remarkable influence. Four zones of villages in each city of province from natural establishment model point of view have been divided in three mountainous, hillside and flat zones. The results of investigations show that position and climatic geographic characteristics have a significant role in rural housing fabric and outward appearance and forming model of spaces, function of rural housing and types of construction materials of housing fabric of village which have been used with the native traditions and public recognition of material production technology and implementation of efficient models in the architecture of building housing have been continuous and sustainable. Investigation of rural housing architecture as a guide can play a role in development and improvement of rural housing in front of planners and experts. In this article, investigation of rural housing characteristics in three zones of flat, hillside and mountainous have been done and recognition and investigation of some of the housing models in each zone, the internal form and function of rural housing and the type of materials that have been used in houses. In this research, choosing some of the models with the pre-assumption that is being efficient and also possibility of copying of model along with construction and with repair and rehabilitation of housing in rural fabric provides the possibility of harmony of housing with climate for residents. The results of investigations show that situation, geographic factors and characteristics have a significant role in development of architecture models proportional to climate in each zone and rural housing outward appearance has formed proportional to them. Based on investigations that have been done in the region of study of housing units regarding to extent, form, shape and different spaces of each housing unit have been divided in three kinds of main spaces and the type of establishment and directional spaces are influenced by natural conditions that common model of space making in each of the zone in establishment of space model and choosing direction related to radiation and wind that get into shape. Also, materials and the type of construction materials that are used in housing fabric which is depending on natural environment and has a great support of native material. The role of the yard in every three zones in the organizing of spaces has been effective and common face of all the models. Also veranda in hillside and mountainous zones has a remarkable role between human and environment in outward appearance and fabric of some villages in aesthetics point of view and also in climatic has been significant. Some of the important materials that are used in housing are sun-dried brick, stone, brick and wood that have direct relation with regional native and geographic conditions. The other important point in rural architecture is the good interaction and the housing and influence of native and cultural characteristics of builders of buildings that shows their role in simplicity and clearness of spaces also the possibility of alternation and floating of activity in spaces and models could be seen. Product of this approach produces native architecture and harmony with climate that should be seen between human and nature and also can be found identicalness with architecture.

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Improving the quality of life has always been considered as one of the human purposes. “creating and maintaining balance between natural and built environment” has a significant role in improving the quality of life. Before industrial revolution, man and nature always was in balance but after formation of industrial revolution this balance was faded and lost ,over the years. This imbalance, reached the highest level in the second half of the last century. During the second half of the last century, the world’s urban population has increased tremendously. Migration to cities has primarily occurred, and will continue to happen, in the so-called less developed countries as the result of increased economic and social opportunities offered in urban areas and the degradation of rural economies and societies. The extremely rapid urbanization has led to extremely serious environmental, social, political, economic, institutional, demographic and cultural problems. The tremendous increase in the world’s population and in urbanization is the main reason for the continuous increase of energy demand and consumption in most countries. Building sector and transportation sector are the major consumers of energy in many cities. To responding energy demand of these sectors, the use of fossil fuel is rising. One of the consequences of this rising, is increasing pollutant like greenhouse gases. Increase in greenhouse gas (GHG) emissions is leading to climate change. According to IPCC report in 2014, GHG emission is the major cause of climate change. Climate change brought about by man-made emissions of greenhouse gases has been identified as the greatest challenge facing human society at the beginning of the twenty first century. Climate change, it is predicted, may potentially damage every natural and human system on the planet. Today, climate change is became as one of the most important concerns of scientific and political circles, so It is clear that urgent action is needed and that the scale and scope of such action will be hugely varied. At present, the main worldwide response to the threat of climate change is mitigation; especially the lowering of greenhouse gas (GHG) emissions across a variety of scales. The preponderance of scientific evidence suggests that climate change is caused and exacerbated by anthropogenic greenhouse gas emissions and that lowering the amount of gas being emitted will limit climate change effects. An increasing amount of climate research now points to adaptation as a necessary means of addressing unavoidable climate change impacts. Adaptation to climate change refers to efforts to develop resilience to predicted or potential climate impacts and effects before and as they happen. In order to responding climate change- as the biggest crisis of this era- and achieving adaptation to climate change, proposing efforts and strategies in various disciplines is inevitable and unavoidable. Urban design and its strategies can have a key role to responding climate change impacts and achieve adaptation. But it is obvious that traditional urban design is not sufficient to responding this. A new paradigm is required to develop resilient cities that can adapt and thrive in changing global conditions, meet the requirements of carbon-reduction and other environmental measures, and sustain urban populations in more compact settings by providing amenities that people need and want. The scope and speed of current changes demands that urban designers define compelling visions and integrated design measures for shaping resilient cities. From energy and transportation to water and green infrastructure, urban designers can shape these systems to shrink our ecological footprint, configure resilient urban form and adapt our cities to climate change. A climate-resilient urban design strategy requires expanding traditional place-making urban design qualities to include principles of sustainable design such as resilience, comfort, resource efficiency, and biotic support. Today, resilience is one of the most important qualities that considered in urban design. There are various ways to achieve resiliency through urban design. Reducing CO2 emission is the most known and common way to achieve resiliency. In the past, efforts at reducing CO2 have focused primarily on building scale (low to zero-energy buildings). While there has been great progress in the energy efficient buildings over the past forty years, buildings alone do not include transportation and infrastructure systems (energy, water and waste) as part of the design process, so low-carbon urban design is considered as an inevitable necessity. Low-carbon urban design principles can be classified into sevencategories which are called as “seven rules of sustainable and low-carbon urban design”. These principles include: 1)restore streetcar city, 2)designing an interconnected street system, 3)locate commercial services, frequent transit, and school within a five-minute walk, 4)locate good jobs close to affordable homes, 5) provide a diversity of housing types, 6)create a linked system of natural areas and parks,7)invest in lighter, greener, cheaper, and smarter infrastructure. These principles represent the elements of a whole. Achieving one without the others – particularly if it is at the expense of the others – will be of limited value and could be counterproductive. Low-carbon urban design principles and strategies can be applied in different scales. Among the scales proposed for urban design, neighborhood is recognized as an appropriate scale for application of low to zero-carbon urban design strategies, because it aggregates all the systems and flows. It has the potential to integrate the design of transportation, buildings, infrastructures, landscape and land-use while engaging the design of public realm as part of the system. This article seeks to present the urban design criteria for low to zero-carbon neighborhood by exploring the studies and the best practices (in Freiburg, Hannover, Stockholm, Malmö and London) to create low to zero carbon neighborhoods. The result of the research is shown as urban design criteria which categorized by urban form and building typology, transportation and land-use, energy, landscape design and creativity. These criteria not only is in consistent with the low – carbon urban design principles, but also if these criteria are applied in an integrated way, we can expect creating a low to zero-carbon neighborhood; A neighborhood with qualities, such as local identity, inclusion, human scale, lower energy consumption, lower CO2 emissions and, most importantly, greater resilience.

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Students on university campuses constantly encounter a variety of teaching and learning environments in addition to a range of difficulties, such as social and academic demands that are detrimental to their mental and physical well-being. This issue is heightened by the significance of creating healthy and restorative areas in universities to lower stress levels and restore concentration for more effective studying. The present research therefore aims to explore the students’ needs and preferences for restorative areas in the Faculty of Science at Ferdowsi University Campus in Mashhad, as well as to develop a conceptual framework demonstrating key urban design components of a restorative university campus. The present research is qualitative. 33 students from Ferdowsi University`s Faculty of Sciences participated in the structured interviews to collect data, which was then analyzed utilizing a qualitative content analysis of the conducted interviews. The study`s findings demonstrate that, from the students' viewpoint, the university campus environment has been restored through the following qualities: serene and refuge, walkability, high-quality public space, linkage to nature, coherence and extent, compatibility, and sociability. Therefore, there is a spatial component to health, and students` mental restoration can be aided by being in open and semi-open places near natural features like trees, plants, and other qualities of urban design that promote health.
 

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Today, cities need public spaces for social interactions. Shortage of land on the ground level in metropolitan areas is a big challenge for creating public spaces. Using underground spaces for creating public space in urban areas could be an efficient answer to solve mention problem. Using underground area as an urban space is a wise decision for creation of more public spaces in big cities. Creating well organized underground urban spaces for various activities instead of normal unplanned underground spaces need theoretical foundation. It seems existing underground spaces in cities such as Toronto, Montreal, Osaka, Paris and Stockholm and future underground spaces need unique urban design qualities to act as riche public spaces.
This research is a kind of scientific study on urban design qualities of underground urban spaces. The main aim and objective of this research is to derive appropriate urban design qualities for high quality of underground urban spaces. Basically, quality of urban spaces was defined through observing and descripting existing underground urban spaces and their documents such as reports, maps and photograph; beside analysing various available urban design theories.
Importance of accessibility, legibility and their impressive impact on an urban space are significant points that learned from urban design researcher who focus on the mentioned qualities. Special academic information in scientific papers available in national scientific databases of Iran like http://sid.ir and “http://www.magiran.com” shows urban design researchers highlight some of the qualities such as social interaction, security, visual quality and identity. Some of the leading researcher in the field of urban design has focused on accessibility and other qualities like scale of space shape and form, identity in England and America. Underground urban space should answer various urban complexities affecting urban design quality, which differentiate the determination of quality of this kind of space from those on the ground level. Underground urban space requires unique qualities to perform in a different level from other areas of the city such as those on the ground level.
In this regard, according to the characteristics of underground urban spaces, it is necessary to provide a set of urban design quality for these types of urban spaces. Underground urban spaces should be studied with respect to technical (mechanical & electrical), architectural and urban design aspects to provide truly useful results. Therefore in relation with urban design quality, it is important to consider the technical aspects. The technical aspect of locating infrastructure at same level of underground urban space is one of the significant aspects which affect the quality of these spaces.
According to Sariyildiz & Durmisevic [29] and Pourjafar[18], Key aspects that could have influence on underground space design include: accessibility and enclosure; sense of orientation; spatial proportions; communication with the outside world; natural and artificial lighting; materials and colors; noise level; and air quality. Research carried out by the Dutch Railway in 1996 included both above and underground train stations (as underground urban space) and showed that the most negatively experienced places in the stations are the platforms and places where tunnel were located. The reasons for the negative experience are mainly: unwanted behavior of other people, abandonment, darkness and poor visibility. Architecture integrates both function and form. Through form and function the psychological aspects are interwoven by having an influence on the experience of space in a given context. Only when both are together, they give to each other a meaning and a quality. Considering the psychological aspects which can be strongly influenced by the form and functional aspects is very important. In this way the relationship between spatial characteristics, being form and function, and psychological aspects becomes more transparent. [29] The clear meaning of the concept of quality in the field of urban design will help to understand relationship between underground urban space and its set up of quality. Important qualities in three groups such as function, form and psychological aspects could be explained as follow:
Function: communicational patterns, accessibility, space integration, Acoustic, soundscape, lightning, air quality and temperature. [29]
Psychological aspects: Impact of wide and visible view of space for consumers to feel secure and crime prevention (C.P.T.E.D), Escape possibility in crisis, natural lightning, social control, sense of orientation, comfort, maintenance, attraction, various services and infrastrucres. [18]
Shape & Form: tonality and materials harmony in paving, ceiling and wall, structure and partition walls, dimension, natural and artificial furniture, location and design of stairs and escalators.
Overall, it can be found that the most important qualities that response to people’s needs in an underground urban space are security, comfort, legibility and orientation.
The result of this research indicates that: based on discussion on underground space features and people’s essential needs in city scale, underground space qualities derived from international and national urban design researcher’s views and reports of urban design projects in USA & England and various case studies in Tehran. Successful underground space project experiences such as Toronto, Montreal, Osaka, Paris and Stockholm; show appropriate qualities for this kind of space like: Social interaction & liveliness, safety, stability, identity, legibility(sense of orientation), diversity, accordance, homology, sense of belonging, comfort, accessibility, flexibility, moderation and space scale. Therefore underground urban space qualities have to be classified with respect to main underground urban space features and their location under the surface of the ground. In this paper a new model is purposed to create effective various responsive underground urban spaces. This new practical model can be called model of overall quality of underground urban space. Overall qualities of underground urban space were classified into three groups, called: «Outer space» qualities, «In-between space» qualities and «Inner space» qualities (Fig. 1).