Ocenjevanje stabilnosti zidanega minareta na izrazito potresnem območju
Evaluat ion of sta bility of masonry minaret in high seismicity region

Summary/Abstract: This paper is a result of authors' involvement in the Project of Rehabilitation of the Ferhad-Pasha’s Mosque. The aim of the project was to construct an authentic building using authentic materials, while respecting the principles of aesthetics and the approaches of ancient builders. The building will be reconstructed to the same condition as it was before destruction using similar construction methods. It is foreseen that it will be difficult to comply with this principle, due to significant developments in architecture since the initial construction. Monuments are precious things that must be respected, and altered as little as possible. These observations could lead to contradictory decisions, at times accepting a higher degree of risk in order to avoid or limit changes to the original concept. The Ferhad-Pasha’s Mosque is the work of a highly-qualified mimar (builder) and muhendis (engineer), a product of Sinan's school. On 7 May 1993 the mosque was dynamited and razed to the ground, and the material removed to the city landfill site in Ramiće. The computer program SAP 2000 was used to analyze the minarets with shell elements. Assuming no tension, it was found that the stress was exceeded to a greater extent under the earthquake load. Deformations caused by shear forces have an insignificant influence upon the rigidity of tall slender structures, thus they can be neglected in practical calculations. To reduce the tensile stress, which appears due to seismic movements, we recommended two solutions.

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