Yüksel, Müge
Due to global sustainability movements, environmental impact assessments are steadily accelerating in the Architecture – Engineering – Construction (AEC) sector. In order to achieve the 2030 and 2050 carbon targets, laws and regulations are published by governments and decision makers to reduce carbon emissions. Nowadays, transportation is the second-largest contributor to anthropogenic greenhouse gas emissions in the European Union, including Turkey. As a developing country, Turkey strives to catch not only the level of wellbeing level of the EU but also to follow up the targeted carbon levels, so for this reason, advancements in infrastructure systems are accelerating in Turkey. Another significant point to take into consideration is that each project brings its own carbon footprint which requires to be controlled to be able to generate a healthy carbon circle of the whole picture. In other words, the benefits of infrastructure projects are indisputable, but the exponential increase in the number of projects causes the increase of the value of the carbon burden so their assessments become more and more important. The aim of this study is to create a reference study for carbon footprint assessments of infrastructure systems in Turkey. Accordingly, the embodied carbon of urban railway systems (metro lines) were calculated based on material quantifications. Specifically, four urban railway lines, including 18 metro stations in Istanbul, Turkey were examined. With these assessments, a reference carbon footprint value of the urban railway systems was provided. The findings indicate that the total carbon footprint (CFP) of the subterranean railway metro stations ranged between 36,734.47 tCO2-eq and 89,551.80 tCO2-eq with the average of 58,557.58 tCO2-eq. The CFP per m2 of the stations ranged between 2,39 tCO2-eq/m2 and 11,04 tCO2-eq/m2 with the average of 6,8 tCO2-eq/m2. At the line level, the total CFP of all the lines ranged between 336,897.58 tCO2-eq and 1,630,278.09 tCO2-eq with the average of 705,261 tCO2-eq. The CFP per construction length (km) of the lines ranged between 52,152 tCO2-eq/km and 88,634 tCO2-eq/km with the average of 75,991 tCO2-eq/km.


Embodied carbon assessment of residential housing at urban scale
Kayaçetin, Nuri Cihan; Tanyer, Ali Murat (2020-01-01)
A great majority of the previous research put extensive efforts on the evaluation of life cycle impacts and carbon footprint of single buildings. Analysis on single buildings often excludes components related with urban scale such as construction of infrastructure, distance to city centre and transportation. Research on neighbourhood-scale settlements is necessary to further develop the understanding of the environmental impact of built-environment.
Energy consumption of a day-occupied building utilizing phase changing material incorporating gypsum boards
Akgül, Çağla; Gürsel Dino, İpek (null; 2018-09-14)
In the architecture, engineering and construction industry, there is an urgent need for a shift to low-energy, sustainable buildings to address the environmental concerns, increase occupant comfort demands and lower the operational cost of buildings. In this direction, one of the most effective technologies is using PCM’s (phase change materials) as part of building envelopes. PCMs can increase building performance by increasing the thermal storing capacity of buildings by decreasing the heat transfer betwe...
Understanding the Links between Urban Regeneration and Climate Friendly Urban Development Lessons from Two Case Studies in Japan
Balaban, Osman (2014-01-01)
Urban regeneration policy and projects could facilitate the implementation of spatial policy responses to mitigate climate change and adapt to its consequences in cities. However, the potential role of urban regeneration in creating climate-friendly urban environments is not sufficiently evaluated and understood. Considering this gap, the paper aims to explore the potential linkage between urban regeneration and climate change. The case study analysis focuses on two urban regeneration projects, representing...
Deformation analysis of concrete faced Aydın Karacasu dam and comparison of theoretical results with measurements
Tosun Tütüncübaşı, Tuğçe; Özkan, Yener Mehmet; Yıldız, Saadet Gülru; Çokça, Erdal (2019-01-01)
The improvement in design technologies has enhanced the use of different fill materials in construction of the embankment dams. Rockfill is one of the most preferred fill materials for embankment dam. Also, use of different fill material such as sand-gravel has been preferred in recent years. Previous studies on concrete faced sand-gravel fill dam (CFSGD), results of the laboratory experiments and in-situ testing analysis display that using sand-gravel as a fill material is not only cost-effective but also ...
Sustainable construction in Turkish higher education context
Topak, Fatih; Tokdemir, Onur Behzat; Pekeriçli, Mehmet Koray; Tanyer, Ali Murat (2019-03-01)
As the construction industry is one of the dominant contributors to the world’s total CO2 emissions and it has huge negative impacts on the environment, sustainable construction has become a key aspiration in the field. Through utilizing eco-friendly design and resource efficiency, sustainable construction is considered as the main concept to create and operate a healthy built environment. Although sustainability has been demonstrated as a timeless objective for continuous development in Turkey’s government...
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