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    A Comparison Study of Some Flood Estimation Methods in terms of Design of Water Structures
    (İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2016-03-23) Gülbahar, Necati
    Flood is a natural disaster that caused the death of many people, environmental destruction and economical loses. Therefore, it is must be taken under control and prevent damage to the people and environment. Particularly, cities and villages have been often faced with floods that result from engineering and planning errors in Turkey. As a conventional approach, some certain calculations methods have been developed in order to estimate flood discharge, velocity, depth and recurrence in this regard. Some of them are widely used for the flood estimation such as; unit hydrograph, stochastic and statistical, Rational, MacMath, Kirpich, Mockus, SCS, Snyder and Degree-Day methods. Because, every method has some significant limiting conditions, each one gives different results for same place. According to recent researches, selection of the proper method is very important to reach more accurate results, but the best one is measuring. Therefore, a suitable method to meteorological, hydrologic, topographic conditions of a basin should be selected for the successful application. In this paper, some common conventional methods were discussed and evaluated for the aim of performing better results.
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    Planning and Design Principles of Transmission Line in Water Supply Project
    (İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2016-03-23) Gülbahar, Necati
    Water is an essential substance for human life and living things. It is not substance for the life, but also energy input for agricultural and industrial production. In addition to, it is needed for human daily activities and environment. Water is taken to a place where people need by with transmission lines in water supply project. A transmission line is designed according to requirements, topographic conditions, engineering principles and economic criteria. Transmission lines are large scale projects which planned and projected by public organizations which are DSI, Provincial Bank and Municipalities. Although they are competent and experienced; some problems have been observed in water supply projects such as; lack of future plan, expropriation problem, improper pumping station, incapacity, inefficiency, pollution, poor quality, necessity, inadequate itineraries, too long lines. To avoid these problems, first future development plan for cities should be made and carried out without compromising. Next, the detail study should be carried out for each project from engineering, environmental and economic aspects. In this paper, these issues were examined and discussed to take attention to some important points in planning and designing of transmission line for the application