Methodogy proposal for the conservation of modern buildings which were constructed between 1935-55 in Kayseri

Structures, which were built in 20th century, began to take place in the list of cultural heritage in recent years. "Modern heritage conservation" term has been begun use in the conservation literature, but necessary legal arrangements have not been provided yet, according to holistic conservation. The studies generally focused on structures definition, values or project processes. Before being registered, some reasons that to be near-term structure, to be build with today's construction techniques and the presence of many similar structures, are caused to destruction of buildings. In some developed cities, many modern architectural heritages were demolished, before registration decisions or after registration was canceled by court. Conservation of the building has many important theoretical and practical problems in the process of project preparation or during the implementation. The 20th century buildings, which were built by reinforced concrete construction system, have been demolished or have been lost its resistance in time. The life of the structures has shortened, because of the design, inexperience in the usage of concrete, technical details and material faults. Reinforced concrete buildings deterioration is related to its construction system. The first aim of this thesis is to identify timeout deteriorations of the modern architectural heritage that constructed by reinforced concrete and to determine of priority intervention ways to these deteriorations and to develop recommendations to the conservation project and implementation process. A deformation of materials, details or techniques is caused necessary change for the original materials and details or techniques of the construction. This situation is cause negligence of the original material or techniques usage in the modern heritage conservation. The most important difference, according to conservation theory, is priority of authenticity, between traditional and modern conservation approach. Decisions, which are related to preservation of heritage, have squeezed between conservation of authenticity and maintaining of building life. Because of that, conservation of concrete reinforced system, development of implementation details, must be thought again for conservation theory. In the world, many of the modern heritage structures have implementation problems. Problems are not only related to the implementation, but also related to the conservation decisions. So discussion of modern heritage conservation is continued. Conservation decisions and theory has been examined over of the examples of modern heritage and has been developed new approaches within the scope of the study. In this context, developments of special conservation suggestions have been targeted for the different types of the 20th-century examples. Kayseri is selected as a case study. The selection reason of Kayseri as a sample is modern buildings, which are built by reinforced concrete system in the Early Republic Period, that still exist today and are conserved with their original values. Buildings, which are selected as case, are not only important for Kayseri, but also very important for Turkey with their design approach, construction materials and details, architectural and social values. These buildings are investigated, conservation and implementation process are examined and new proposals are developed for conservation. As a result of all these studies, new conservation approaches are examined and new evaluation methodology is developed over Kayseri case. Also new inventory proposal is prepared for documentation modern heritage and determination of its values. New methodology is suggested for analysis of modern heritage situation, determination of conservation level and definition of intervention approaches. Key Words: Conservation of Modern Heritage, Reinforced Concrete System, Kayseri, New Conservation Methodology