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    Earthquake load behavior of a rc building with tuned-steel roof system
    (İstanbul Ticaret Üniversitesi, 2020) Karakale, Vail
    In this paper Tuned-Steel Roof system is proposed to reduce the earthquake effects on existing RC buildings. The idea is to replace the conventional wooden truss roof system by a steel roof system which will be connected to the RC building with low lateral stiffness steel bars. The steel roof can be tuned to have the same natural frequency of the building. All the construction works are applied from outside of the building and do not affect the building function, that there is no need to evacuate the building. Time history analysis on a RC building finite element model was performed to investigate the effectiveness of proposed technique. Analysis results shows that the building with tuned roof get a reduction of top displacement , top acceleration , and base shear by about 20 to 50 percent compared with the building without tuned roof. The reduction is affected by earthquake characteristics and roof mass.
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    Expenditure analysis of planned special event participants: Binary logit model
    (İstanbul Ticaret Üniversitesi, 2022) Ergin, Mahmut Esad; Karakale, Vail
    Planned special event (PSE) increases the travel demand and derives interim activities that individuals spend their time and money. In this study, it is aimed to determine the factors affecting the money expenditures of PSE participants in interim activities that they participated before the special event by using the Binary Logit Model. A face-to-face survey study started in December 2018 and ended in May 2019, and football is selected as the PSE. As a result, 357 valid questionnaires were obtained before 6 league games and included in the modeling study. This study showed that PSE participation is not the same with daily routine activity participation for example age, income level, frequency of participation in games are not statistically significant. However, when fans come to the games with someone, they gather at locations within walking distance of PSE venues and attend an event where they spend money.
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    Seismic performance of cladding systems: Experimental work
    (İstanbul Ticaret Üniversitesi, 2019) Karakale, Vail
    Cladding accounts for up to 25% of the cost of a building, has a major impact on its integrity, service life and preserves its appearance. In this paper the dynamic behavior of cladding systems of two projects in practice was investigated. The first project is the Great mosque project in Algeria and the second project is a high rise building in Almaty- Kazakhstan. In the first project stone cladding system was used and in the second project glass aluminum panel cladding system was used. Shake table tests were performed to verify the adequacy of the cladding system connection details. Test results shows that the designed façade detailing was appropriate and permit free movement of the curtain wall from the building structure without getting failures. The paper presents test specimens details, test results and the recommendation that the architect or the design engineer should take into consideration in designing cladding system connection details.