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Investigation of the Greenhouses in Istanbul in Terms of Structural Properties

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Abstract (2. Language): 
In this study, we aimed to determine the current structural conditions, problems, characteristics of the ventilation and heating systems of the greenhouse systems in Sariyer and Pendik districts of Istanbul province, then to develop an appropriate greenhouse project to local ecological conditions. Gümüşdere neighborhood in Sarıyer district and Göçbeyli and Emirli neighborhoods in Pendik district have been selected as a research area, which covers 50.8 % of Istanbul’s greenhouse cultivation. We carried out a survey to determine the size and type of farms, and greenhouse materials. Examined greenhouses are selected by the random sampling method. The current condition and set up construction, types and features of plastic greenhouses and high tunnels are examined by making measurements, sketches, observations and taking photographs. Of all surveyed greenhouse systems, 7.8 % (totally 10) are single greenhouses, 38.3 % (totally 49) are block greenhouses, and 53.9 % (totally 69) are high tunnels. It is determined that 100% of the surveyed plastic greenhouses and high tunnels are constructed without any project. 79.7% of growers have made a local contractor established plastic greenhouses and high tunnels. Iron is used as the main carrier material in 71.9% of the greenhouses. There is no steel used in greenhouses because it is mostly used in glass greenhouses. In the examined region, there are almost no glass greenhouses. As a result, we aimed to raise technical standards of plastic covered greenhouses and high tunnels to that of the Turkish Standards Institute (TSE). To enlighten local growers, we aim to make a usable technical project suitable for the research area using AutoCAD software
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