Ata Chokhachian

Ata Chokhachian
Technische Universität München | TUM · Department of Architecture

Doctor of Engineering

About

45
Publications
22,174
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
373
Citations
Introduction
Ata Chokhachian is a research scientist, educator, and advisor in the domains of building technology and urban climate, developing and employing computational decision-making processes, tools, and workflows for architects and urban planners. In 2022, he defended his Ph.D. dissertation in developing tools to quantify outdoor thermal comfort. In the summer of 2019, he was appointed as a visiting research fellow at the Sustainable Design Lab at the Massachusetts Institute of Technology.
Skills and Expertise
Additional affiliations
March 2019 - July 2019
Massachusetts Institute of Technology
Position
  • Fellow
July 2018 - May 2020
Technische Universität München
Position
  • Research Associate
January 2016 - present
Technische Universität München
Position
  • Research Associate
Education
January 2016 - January 2022
Technische Universität München
Field of study
  • Building Technology and Climate Responsive Design
February 2012 - February 2014
Eastern Mediterranean University
Field of study
  • Architecture

Publications

Publications (45)
Book
Full-text available
This book collects ground-breaking works on the actual and potential impact of big data and data-integrated design for resilient urban environments, including human- and ecology-centred perspectives. Comprehending and designing for urban social, demographic and environmental change is a complex task. Big data, data structuring, data analysis (i.e....
Article
Full-text available
In the context of dense urban environments and climate change, pedestrians’ thermal experience plays an increasingly significant role in people’s health and well-being. In this research, the authors combine the fields of architecture, climate-responsive design, and robotic fabrication with the goal of investigating strategies to improve outdoor the...
Thesis
Full-text available
In recent years, we have witnessed a growing public awareness of the impacts of the natural and built environment on well-being and health in cities. Although this is an encouraging sign, there is still a lack of good evidence and objective measures on how urban microclimate affects people's perception of outdoor thermal comfort in urban environmen...
Article
The Universal Thermal Climate Index (UTCI) has been linked to outdoor activity patterns and used to evaluate the effectiveness of urban interventions to improve thermal comfort. This study investigates how simulating the urban environment at increasing levels of physical accuracy impacts UTCI values along three cycling routes in Cambridge, Massachu...
Conference Paper
This paper presents the modelling enhancements of the multizone model of TRNSYS and its GUI TRNLizard for the dynamic evaluation of the thermal behaviour of outdoor urban spaces. The developed approaches for detailed radiation modelling based on surface discretization and raytracing in 3-dimensional space extended the capabilities of the thermal bu...
Chapter
In different contexts and parts of the world there has been centuries of efforts and challenges in different scales to shape a dialogue between formal and informal settlements. It’s widely been accepted that even though the self-built settlements often present low-quality living standards, low accessibility to public facilities or higher exposure o...
Chapter
Brick is one of the most widely used building materials worldwide, and this is projected to continue. The clay material, due to its high thermal capacity, robustness and formal flexibility, can be assembled in different ways to control thermal behavior with self-shading or adding active interventions like extra moisture. Additionally, bricks as mod...
Conference Paper
In order to get to a carbon neutral building stock-which is e.g. required by the EU Carbon roadmap by 2050-our efforts need to be smart and holistic on all scales of design. At the same time, it is essential that a transformation process leads to healthy, comfortable and inspirational environments-indoors as well as outdoors. Additionally, it is ne...
Conference Paper
Full-text available
PANDO is a numerical process-based simulation tool that enables the user to model individual trees and canopies in Rhino Grasshopper interface. This plugin simulates radiation fluxes in three different wavebands of photosynthetic (PAR), near infrared (NIR) and thermal. It also counts for photosynthesis and transpiration by tree canopies. PANDO can...
Article
Majority of the world population live in urban settlements where for the city dwellers, the quality of life is directly influenced by the environmental conditions as a result of the built environment. The environmental conditions on the public realm and in the buildings, shape how people use outdoor and indoor spaces in their daily life. Correspond...
Chapter
Full-text available
Book
Climate change, urban population growth and resource shortages are the most crucial issues of our time. The global trend is rapid urban population growth, although this trend is decreasing in European countries. In this context, availability, distribution and the adequate management of resources are the fundamental issues that need to be addressed...
Chapter
The term appropriation in general definition, is known as a temporary phenomenon that implies a dynamic process (human activities) of interaction between the individual and its surroundings (built environment). The term in generally used to illuminate the connection between people and public spaces in social science; however, the footprint of envir...
Article
https://www.theccd.org/articles/climatewalks-human-centered-environmental-sensing
Article
Full-text available
Climate is the primary factor that allows the use of public spaces. In particular, microclimate describes the conditions that human beings continuously experience through their senses. Microclimate most drastically affects conditions in cities, the places where society, economy and environment converge and where walkability, comfort and health are...
Article
Full-text available
Human's general perception of an open space is influenced by architectonical, psychological but also physical factors. For this reason, it is important to consider environmental comfort as a crucial element when it comes to designing an urban outdoor space [1]. In this paper, we consider the following research questions: in a Mediterranean climate,...
Article
The regenerative approach to design goes beyond limiting the environmental impact of the built environment and towards the enrichment of the ecosystem, adaptation to climate change, and the improvement of human health. This concept is being applied to buildings through new standards such as the Living Building Challenge, yet examples of implementat...
Conference Paper
Microclimate among further key factors has a fundamental influence on how people occupy and use public spaces in dense urban environments. Respectively, comfort evaluation of outdoor spaces is essential due to the fact that they accommodate daily pedestrian flows and various outdoor activities, also they contribute largely to urban livability and v...
Conference Paper
Full-text available
Microclimate has among further key factors a fundamental influence on how people occupy and use public spaces in dense urban environments. Comfort evaluation of outdoor spaces is essential since they accommodate daily pedestrian traffic and various outdoor activities, also they contribute largely to urban liveability and vitality. In the wider cont...
Article
Full-text available
About half of the energy loss in buildings is wasted through windows. Determining the optimum window-to-wall ratio (WWR) for different building facades would reduce such energy losses. The optimum WWR is the window area that minimizes the total annual energy of cooling, heating, and lighting. The purpose of this study is to investigate the optimum...
Article
Full-text available
Environmental data acquisition tools are broadly used for climate monitoring and urban comfort assessment followed by data mining and sensing techniques for putting into evidence the relationship between environmental qualities of urban spaces and human well-being. Within this context, an environmental toolkit is a fundamental tool to evaluate tran...
Conference Paper
Full-text available
Over the history of human settlements, approximately 30% of the world's population lived in brick made structures by 1990. It is also projected that the brick product segments will raise 3.5% during 2017-2027 and it is anticipated to dominate over the forecast period. So far, energy regulations have pushed the innovation of bricks towards better U-...
Article
Full-text available
Extensive cost in the building industry comes from cooling and heating to create thermal comfort. Hence, it is necessary to utilize passive solutions, in addition to suitable design, in order to reduce energy consumption. This research attempts to investigate the impact of archetype patterns in office buildings on annual energy consumption for cool...
Conference Paper
Full-text available
The early design stages of urban planning have a great impact on indoor comfort and energy aspects. Alternative power supply options, based on solar potential, should be considered in the early stages of design, as they may constitute highly efficient substitutes. Existing software solutions for such simulations require higher level of detail from...
Article
Studies on microclimate of cities have already proved that pedestrian thermal comfort is function of built environment and it is fundamental to understand this phenomena both with numerical techniques and field measurements to achieve comfortable, healthier and more livable urban spaces. There has been wide variety of methods to approach this quest...
Chapter
This chapter describes the positive effects and improvements of green streets on outdoor thermal comfort, considering the relevant influence on human well-being and urban heat island phenomenon in cities. The most influencing characteristics of plant species, which determine outdoor comfort, are described, e.g., foliage shape and dimension, leaf ar...
Conference Paper
One of the main consequences of increasing urbanization in dense metropolitan contexts is the issue of microclimate and its relevance for dwellers due to heat and cold stress peak points. Extreme cases occur in tropical climates, where people are constantly exposed to heat stress. This research evaluates - as a case study - heat tolerance of people...
Article
Full-text available
The concept of resilience in urban design and decision-making is principally focused on change instead of resistance over an adaptive process. For cities, this concept in a broader scale means how to withstand unforeseen events that will fundamentally amend the city's wellbeing, rather than being stabilized and protected. The same concept is applic...
Conference Paper
Full-text available
The integration of energy and indoor comfort aspects into the early stage of urban planning is essential to conceive energy efficient urban structures and to avoid expensive compensation measures in the later building design. This could end up with increased insulation levels, complex air conditioning systems as well as increased energy demand duri...
Conference Paper
The research proposes a mathematical generative methodology to identify performance linking urban forms and density indicators. Selected performance criteria for this preliminary study are shadow factor (on the public ground) and Urban Heat Island effect. The results are interpreted based on the mathematical correlation between building form factor...
Conference Paper
Full-text available
Environmental conditions strongly affect the use of public space and influence movement patterns: the evaluation of these conditions demands innovative computational methodologies and tools to collect data, process it and interpret such huge arrays of information. Computational and coupling methodologies open the way for developing an integrated un...
Article
In urban areas the impact of built environment on wellbeing and human health should be considered due to urban heat island phenomenon. The present research aims at identifying a method for an accurate estimation of thermal outdoor comfort and mean radiant temperature, modeling and simulating the effects of urban form and vegetation on microclimate...
Conference Paper
Full-text available
The world has experienced extreme urban growth in the last and current centuries, since more than half of the world population living in urban areas. Cities are expanding toward megacities with higher densities and narrower urban canyon profiles with huge urban structures and building masses. The transformation of urban landscape to densified city...
Conference Paper
The parameter, as a variable of differentiation, defines the limits and boundaries of a system and the conditions for its operation. It is through parameters that we are able to produce certain logical relationships between different parts in design procedure. Fundamental to this, however, is the assumption that the object or phenomenawe are modeli...
Article
The buildings are one of the most resistant and at the same time exclusive creatures of human beings in different civilizations. In the past, the most significant impact of each society was the scale and hugeness of their buildings as a direct mirror of their power among other nations. Also theirs buildings were intelligent and practical enough to...
Book
Full-text available
As the living world becomes more and more complex by the time goes on, the question comes up that how to take the complexities of a design in different parameters and reduce it down to a physical prototype? This is where a shift in thinking and design process is necessary.
Conference Paper
Full-text available
Parametricism is a term for a new call epochal global style of architecture and covers all the design disciplines and also has become an important benchmark in design education as well. The term after its advent in 2008 has developed a global movement that has become mature in the body of technology and contemporary issues on architecture and urban...
Conference Paper
Full-text available
Advent of machinery age, altering in human needs and lifestyle has changed the pattern of architecture. This pattern is in close relation with different environmental, contextual, behavioral and theoretical aspects of dwellers. With a glance to the history of design, in 1940s the new style of architecture came up which was called Googie architectur...
Thesis
Parametricism is a term for a new call epochal global style of architecture and covers all the design disciplines and also becomes an important benchmark in architecture design as well. The term recently, has developed a global movement that becomes mature in the body of technology and contemporary issues on architecture and urbanism. Parametric de...
Conference Paper
Full-text available
Nowadays, architecture is known as a tool for communication. This means that, it is used to transfer the language, which is the extraction of human`s needs and desires, to the image in the real world. Image is an abstract perception, but when it synthesizes with language, it expresses a story or manifests the reality. In this paper the concept of i...

Network

Cited By

Projects

Projects (8)
Project
The intensified climatic situation forms the starting point for the question of whether and how the urban climate can be improved and influenced with local architectural measures. Is it possible to counter the heat islands that are increasingly occurring in Northern and Central Europe with the means of retractable textile constructions in the form of architectural interventions in the city and, in addition, to generate added value for society? These questions lead to the idea of developing City Climate Canopies (C³), which generate urban-spatial, societal-social and climatic added values - on a small scale but with the greatest possible impact. Specifically, these are lightweight, climate-adaptive and flexible membrane canopies that counteract Urban Heat Islands (UHI) through their reflective effect, provide shade and preserve and create urban (meeting and utility) spaces with improved outdoor comfort. https://www.zukunftbau.de/projekte/forschungsfoerderung/1008187-2155
Project
The intensified climatic situation forms the starting point for the question of whether and how the urban climate can be improved and influenced with local architectural measures. Is it possible to counter the heat islands that are increasingly occurring in Northern and Central Europe with the means of retractable textile constructions in the form of architectural interventions in the city and, in addition, to generate added value for society? These questions lead to the idea of developing City Climate Canopies (C³), which generate urban-spatial, societal-social and climatic added values - on a small scale but with the greatest possible impact. Specifically, these are lightweight, climate-adaptive and flexible membrane canopies that counteract Urban Heat Islands (UHI) through their reflective effect, provide shade and preserve and create urban (meeting and utility) spaces with improved outdoor comfort.
Project
This collaborative project develops new approaches to architecture and environment relations and interactions based on the objective that architecture should be in the service of the natural environment.