Journal of Iranian Architecture & Urbanism(JIAU)

Abstract Extended Abstract
Background and Objectives: Fortifications such as city walls and citadels allowed people to settle in their land and protected their lives from natural and human threats. The history of sedentism in the central plateau of Iran dates back to 10,000 years ago. In addition to this historical context, there are still surviving vernacular urban and architectural spaces in Iran. Meybod is a desert city located in the central plateau of Iran, where human settlement might have begun during the Medain period. The city was fortified with a city wall and a citadel known as Narin Castle. The advent of modern streets and the loss of significant parts of the city walls in recent decades have endangered the integrity and values of these structures. Meybod city wall and Sharistan are also facing these challenges. To ensure effective conservation, a comprehensive understanding of the evolution of urban and architectural heritage is necessary, along with an explanation of the changes that have occurred over time. Therefore, the research focuses on the following problem: “How have the developments and transformations of Meybod Sharistan influenced the evolution and changes of Meybod city wall?” The following objectives are addressed:
• Understanding the transformations of Meybod city wall in interaction with the changes in Sharistan to form its current structure.
• Identifying the position of Meybod Sharistan and Meybod city wall in different historical periods.
Methods: This research employed a case study approach and a descriptive-analytical method. Bibliographic research was conducted by examining historical written sources, national and international documents and charters, as well as urban and regional development plans of Meybod. Other data sources, including aerial photographs, were also considered. The results of this research were presented through schematic illustrations and simulations of the current and initial conditions using 3D modeling software.
Findings: Meybod city wall is an integrated architectural complex within an enclosed environment. It is built from two main vernacular earthen materials: Khesht (adobe) and Chineh (mudbrick). Its form and layout follow the topography of the land, defining the boundaries of Sharistan between two elevated terraces to the south and north. 
Three of the four main gates, portions of the ditches, and 11 towers of the complex remain intact. In the south, the city wall merges with Narin Castle (the citadel) through a three-layered rampart. The city wall also features unique elements. One is Bagh Khandagh (ditch gardens), where the former ditches have been repurposed as gardens and farmland. Another distinctive feature is the Darbands, small gates that facilitate passage through the walls to the ditch gardens outside the city wall of Sharistan. The transformations of the city wall and Sharistan are categorized into distinct time periods. Based on the earliest reliable evidence of its foundation, the categorization begins with the Sassanian period:
1. Pre-Islamic Era to the 14th century (Sassanid Period): Sassanid cities were characterized by a citadel (Narin Castle) and city walls, which served as living areas for the ruler and high social classes, while lower classes lived outside the walls. The first foundation of the city wall was likely established during this period. The introduction of Islam to Iran led to the collapse of the Sassanid social hierarchy, and all social classes began living within the city walls of Sharistan, which included the citadel (Narin Castle), a Bazar (market), and the Jame Mosque. The city wall underwent significant restoration due to the Mongol invasion, and a northern gate was likely constructed during this time.
2. 14th century to the early 18th century (Muzaffarid Period to the Early Qajar Period): During the Muzaffarid period, the city’s importance increased due to its strategic location on the route from northern to southern Iran. As a result, it remained fortified, and the Kasnava gate was likely built. After the Muzaffarid period, the importance of the city wall gradually declined, although its conservation continued.
3. 18th century to 1925 (Qajar Period): During the Qajar period, modern concepts such as private property rights were introduced to Iran, which led to investment in real estate. Consequently, the city expanded northward, with ditch gardens and Darbands (small gates) created, along with the construction of private towers. The defensive role of the complex diminished, and the northern gate was replaced with a Sabat (an arched walkway or corridor).
4. 1925 to 1979 (Pahlavi Period): Urban planning concepts from the modern era were introduced to Iran. The first modern streets were built, disrupting the traditional urban fabric. City walls became obstacles to urban development, and the first street in Meybod was imposed, dividing the city into eastern and western sections.
5. Post-1979 (Islamic Republic of Iran): Modern construction and street development continued until the 1990s, during which the city walls were still regarded as an obstacle to development. The establishment of local NGOs, the inclusion of the historic city on heritage lists, and the development of urban plans that took heritage values into account led to restoration and conservation efforts. However, many of these activities were carried out with some errors.
Conclusion: The changes and transformations can be divided into three stages:
1. Formation and Expansion: This phase spans from the initial construction to the eve of the Qajar period, reflecting a close symbiosis between the city wall and the city itself. During this phase, the city wall served both as a protector and a boundary, while continuous expansion, repair, and construction took place.
2. Completion: The developments in this phase are attributed to the Qajar period, characterized by a situation in which the function of the complex was relatively preserved. As a result, the city wall continued to protect the city limits. Both the city and the city wall adapted to new needs and experienced internal growth.
3. Decline: This phase coincides with the arrival of modern urban development trends in the post-Qajar period. The original function of the city wall was lost, and it was no longer intertwined with the city. Consequently, it became an obstacle to urban growth. This paved the way for modern constructions and the demolition of parts of the city wall by the 1990s. Eventually, a shift in perspective occurred, and the city wall began to be recognized as a heritage site with historical and cultural significance.

Abstract Extended Abstract
Background and Objectives: Increasing fossil fuel consumption, on the one hand, along with their non-renewable nature, escalating costs, and the destructive environmental and economic effects of energy consumption, on the other hand, increase the need to use passive systems in buildings. One of the effective solutions to reduce energy consumption and consumption of fossil fuels in the building and also to reduce its adverse environmental effects (increasing greenhouse gas emissions) is the use of passive energy. The facade of residential buildings, as the main mediator between indoor and outdoor space, is an important element in controlling sunlight to the interior and reducing energy consumption. Two important strategies to improve the thermal performance of the building facade include shading devices that reduce annual energy consumption and provide better protection against glare. The second solution aims to investigate the effect of heat transfer or heat resistance of materials used in the building facade by controlling the effects of solar radiation and designing the facade under climate conditions, and reducing the heat transfer by choosing the right materials that can reduce the amount of domestic energy demand. The shape of the building, the orientation of the building, its external and internal walls and materials, the thermal insulation of the facade, the dimensions of the window, the ratio of the window to the wall, and the external shading device can be introduced as effective parameters in reducing energy consumption. Improving the performance of building facades is possible through facade materials, shading devices, and window-to-wall ratio structure. It is important to carry out practical investigations into the thermal efficiency of building facades in order to decrease the amount of energy used for cooling and heating buildings, which represents a significant portion of the world’s energy consumption. As a result, an architectural strategy that focuses on morphology (specifically, architectural morphology) should be examined.
Methods: In the hot and humid climate of Bushehr, the most significant climatic condition is excessive heat. Therefore, it is crucial to research climate-based solutions that can manage the transmission of undesirable heat and lessen the cooling requirements. This study focuses on exploring the thermal efficiency and the transfer of heat caused by solar radiation through building facades in the hot and humid climate of Bushehr. Additionally, it examines the impact of facade design strategies inspired by Bushehr’s native architecture on decreasing the indoor temperature of the building. The research variables that were examined include wooden shading devices (horizontal, vertical, lattice), porches, deep windows, facade materials, and window-to-wall ratio. Each variable has an effect on various types of energy consumption, such as electricity, heat, heating energy, and cooling, which were analyzed in the study. The purpose of this study is to investigate the relationship between independent and dependent variables and analyze their impact on each other. The study involved simulating each building for all twelve months of the year. This simulation included assessing the amount of solar radiation absorbed by building surfaces, its transfer to the interior, and the resulting cooling load demand. The findings are presented through separate diagrams. In the first step, the behavioral pattern of the building facade with respect to the north-south openness was examined to control and reduce the amount of sunlight received and also to reduce the indoor air temperature subsequently, the study extracted general patterns from indigenous facade components that were related to the structure and function of shading devices, facade materials, and their openings. To understand the historical context of shading devices in Bushehr, the various types of shades present in the buildings of this region were classified, and the different shading solutions used in Bushehr were identified. In line with the purpose of the research, it is necessary to test different types of shading devices as research variables. Then check the type of materials and the dimensions of the openings used in the facades.
Findings: To address the research questions, separate simulations were conducted to evaluate the thermal performance of shading devices, window-to-wall ratio, and facade materials in an apartment building. The optimal variable to reduce the cooling load was selected and applied to the building, and its thermal behavior to improve the thermal performance of future buildings in hot and humid climates was studied as the optimal building. The simulation was performed using Design Builder software with Energy Plus simulator engine and Climate Consultant software version 55 and Ashrae thermal comfort model. The findings indicate that the most efficient facade configuration comprises of vertical blinds, lattice windows, and a white cement facade, which resulted in a cooling load reduction of up to 38% and a total load reduction of up to 33% for the building.
Conclusion: The simulation results reveal that the optimal building configuration outperformed both the basic research model and local models on selected days throughout the year, in terms of load testing. This highlights the importance of implementing local solutions in the architecture of hot and humid climates.

Abstract Extended Abstract
Objective and Background: Rural architecture is formed in the context of nature. A link between man and nature is created based on this architecture, which requires applied art to serve human needs. The best way to understand this art is to refer to the existing examples of its identification and analysis. Studying the construction technics of rural architecture is one of the most important ways to understand the vernacular architecture of any land. Leives is located 80 km northeast of Dezful. The village is at the hillside of Langar Mountain. The most important historical places in this village are GadamGah of Leives village and the tomb of Gusheh village (10km south of Leives).
Methods: The present research is of a qualitative type that uses the grounded theory method. The field survey method was used to collect data and documentation. This article is the subject of empirical research that uses multiple sources and evidence to study the architecture of Leives village in its natural context. The architecture of Leives village is a cohesive whole created by its architectural details and structural techniques. To understand this whole, based on its components, cognition, and analysis of the village is described in two macro and micro scales.
Findings: Leives village is divided into Ashiriha and Dinavarha neighborhoods. Leives village development process considering historical and constructional evolution includes 1. The initial core of the village formed around GadamGah and a monument named castle in Dinavarha neighborhood. 2. Dinavarha neighborhood (east of the village) 3. Ashiriha neighborhood (west of the village) 4. New buildings with vernacular materials. 5. New buildings with cement blocks and iron beams. For construction analysis of village streams, the seasonal water flow path in the village is investigated. Water can play both destructive or constructive roles –depending on human brilliance in the choice of location settlement. There are one surrounding stream and three inner minor streams in the village. These streams have some benefits: making two gardens in the south and southwest, using the stream as a route, and creating a natural borderline between Ashiriha and Dinavarha neighborhoods. The structural morphology of the village is described in a macro-scale, including the routes (The village Passages have numerous warps and varying widths throughout, indicating that the village’s fabric has gradually developed by natural growth), and the direction and orientation of the houses, which is the same as the direction of the mountain -northwest, southeast. Therefore, the openings are facing southwest for utilizing the maximum solar radiation to warm inside the house and provide interior lighting). The stepped architecture, micro-scale includes: entrance quality and openings sizes (hard climates (cold winters and direct sunlight in summers), the need to protect the interior from unexpected invasions of humans and insects, the lack of suitable materials for making doors and windows, and a ceiling beam are some of the reasons for the small size and the limited number of the doors, and windows). Used materials (stone and plaster), roofing technique (typically are arched), roof water isolation (usage of the free space between arch and roof as a wheat silo), tabo (large Cereal storage container which is going to be built with clay inside building simultaneously with the construction of the building) are also investigated.
Conclusion: The findings of this study emphasize the importance of choosing a suitable place to satisfy the living needs of villagers. Continuing to live in one place for centuries requires precise location choice in nature. In the village of Leives, the mountain direction and streams are the main factors in locating. Fields and gardens are at the south of the village, and the mountain protects the village like a strong barrier in the north. Being located next to the Langar Mountain brings security for the residents. Also, the farmers benefit from the good view of their cultivated lands. Living in this place requires its specific customs and behavior, and these customs also create their unique architecture. Self-sufficiency on a domestic scale, limited connections with other towns and villages, living between settlement and migration, nature dependency define the specific lifestyle of people in Leives. For this reason, there is no infrastructure designed for social life (such as the bazaar, mosque, and even designed neighborhood center). Finally, Leives architectural analysis can be described in this way: creativity in vernacular architecture is equivalent to the best, most simple, and most available answer to noble and basic human needs. 

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