Re: Dilatation I don't know of a regulation record that there is an aspect ratio for dilatation in buildings. Information about this is available in article 6.3.4 of TS500. The picture of the said article is attached. In general, dilatation is recommended for structures exceeding 30-40 m in length, considering the total length of the structure. The main goal here is to minimize the changes in cross-sectional effects arising from temperature differences. In case of heat calculation, it is possible to test these dimensions. In the article 2.10.3 of the 2007 regulation on the amount of dilatations, limitations on earthquake joints are mentioned. Another reason for dilatation is to get rid of the torsion effect in structures with different shapes. If a very rigid structure is created, such differences can be ignored since these displacements will be small. Dilatation is also used for building blocks with different heights. Again, the aim is to meet the desire to move differently due to the large displacement values of the nodes close to each other. At the same time, extreme changes in ground values are among the reasons that require us to dilate such structures. Considering your structure, I think there is no dimension that requires dilation. It is a six-storey building with a length of approximately 25 m. It has columns with straight axles and walls parallel to the narrow side. Although it is healthier for the building to have the curtains on the outer axles, unfortunately, we see that they cannot be placed on the outer axles due to many architectural concerns (façade loss) in such structures. The municipality must indicate on what basis it requests such a requirement from you and on which regulation it is based.
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