A comparative life cycle assessment of structural materials: a case study on TOKİ housing

Download

EZGİ DENER UYSAL.pdf

Date

2021-9

Author

Dener Uysal, Ezgi

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

301
views

581
downloads

In Turkey, the Housing Development Administration of Turkey (TOKİ) has a significant proportion of housing stock and prepares typical housing projects. Reinforced concrete shear wall system (also named as tunnel form system) is preferred in these projects. This reinforced concrete system may have structural advantages but may also have more CO2 emissions. Therefore, the potentials of a steel system in terms of sustainability are investigated in this study. TOKİ buildings are classified according to their typology. Then, a representative typology is selected and modeled as 5-, 10-, and 14-story buildings with reinforced concrete shear-wall and steel braced-frame systems. Structural models are designed and analyzed by the ProtaStructure program for both high and low seismicity levels. A Life Cycle Assessment (LCA) program, OneClickLCA, is used to evaluate the impacts of alternative models on nature according to ecological parameters. Comparing 5-, 10-, and 14-story models with alternative materials shows that steel models have lower negative impacts than reinforced concrete models except for the formation of summer smog and total energy need. On the other hand, the minimum-maximum boundary analysis of 5-story models indicates that the steel model with minimum recycled content is the most harmful model to nature. The results of 5- and 14-story steel models in low seismic regions demonstrate that the harmful effects of steel get lower (steel is more advantageous for the environment) with increasing building height. Consequently, this study shows the potentials of steel compared to reinforced concrete so that a more sustainable approach can be preferred starting from TOKİ projects.

Subject Keywords

TOKİ housing, Structural system, Reinforced concrete tunnel form, Steel braced frame, Life cycle assessment

URI

https://hdl.handle.net/11511/93117

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

An Institutional analysis of the transformation of informal housing settlements in Turkey : a case study in the Şentepe neighbourhood of Ankara Özdemirli, Yelda; Türel, Ali; Department of City and Regional Planning (2012) Transformation of informal housing settlements by urban renewal and redevelopment has become one of the major tasks of Turkish urban policy in the last decades. Nevertheless, in some cases urban redevelopment could not be facilitated due to low level of investments; and moreover most of the transformed settlements are still problematic with added difficulties brought out by urban transformation itself such as lower levels of physical quality, gentrification or dislocation. Understanding the sources of these...
An Investigation of the residential vacancy patterns in an urban housing market: the case of Gemlik Kıvrak, Hatice Kübra; Özdemir Sarı, Ö. Burcu.; Department of City and Regional Planning (2019) The charm of the construction sector and the unique characteristics of the housing have led to increase in housing production in Turkey. Thus, housing oversupply has occurred in most of the urban areas, and this situation has led to the formation of vacant housing stock which creates problem in different parts of the settlements. In this context, housing stock and housing vacancy are significant issues that need to be monitored regularly in order to take necessary precautions related with planning. This stu...
Typological residential urbanism: an alternative analysis of the TOKİ housing production as a dominant type Parlak, Neris; Cengizkan, Ali; Department of Architecture (2015) Housing production in Turkey has increased enormously in recent years. Quality of the urban form as a result of this housing production is extremely significant since it directly affects the quality of Turkish cities. This thesis aims to draw attention to the potential of the concept of typology on evaluating the quality of urban form of housing environments. Thus, the thesis attempts to test the potential by carrying out a typological analysis of the housing production of TOKİ, which is one of the three ma...
Securing future of social housing: learning from an alternative regeneration/ gyldenrisparken in Denmark Bican, Nezih Burak; Cengizkan, Ali; Mortensen, Peder Duelund; Department of Architecture (2016) There has been a vast quantity of mass-housing production by the central housing authority in Turkey in the recent years. Operated in line with neo-liberal economy-policies since the beginning of 2000s, the public production has concentrated on speed of construction, quantity of dwelling units, and developing financial resource for ‘social housing’ provision by building luxury housing in profitable urban lands. However, this provision has faced criticism of various academic and non-academic circles, primari...
A comparative study on earthquake resistance of reinforced concrete and masonry residential buildings in small-scale cities of Turkey Er Akan, Aslı; Ünay, Ali İhsan; Department of Building Science in Architecture (2008) Today the vast majority of urban population in Turkey is living in multi-story apartment blocks constructed of reinforced concrete due to the fact that in the late 19th century concrete and steel took the place of traditional materials such as masonry. However, it cannot be denied that masonry is still a crucial material for load bearing walls, internal walls and cladding of buildings. In addition to this masonry construction system has many advantages. From the architectural point of view, it provides flex...

Citation Formats

E. Dener Uysal, “A comparative life cycle assessment of structural materials: a case study on TOKİ housing,” M.S. - Master of Science, Middle East Technical University, 2021.