ARENA PLANET
MULTIFUNCTIONAL SPORT HALL
COMPETITION PROJECT
STARA ZAGORA * 2020 * BIM PROJECT

The multifunctional sports hall in Stara Zagora is located in the newly built Artillery Park in the heart of Stara Zagora. The park itself was built in 2015 and is located in the western part of the city. It was built on 70 acres, in place of the former artillery barracks. The green area is about 35,000 square meters. Many young trees, shrubs and seasonal flowers are planted, and there are two rock gardens.
Functionally, all requirements for flow separation, easy access for different groups of people, necessary premises and various commercial and other objects are met. The project proposal continues the trend of applying modern construction technologies. Moreover, the round shape of the hall and the design solution allow for maximum variability in the use of spaces. On the other hand, the simplicity of the form facilitates the implementation of the project in technological terms and the eventual reduction of built-up areas, while retaining the basic concept of a “hall-planet”.
The construction of the hall consists of two parts - a traditional reinforced concrete structure serving as a base (covering all six levels) on which the metal structure rests. The latter plays the role of a roof that covers the entire hall. The large support distance, which requires the nature of the hall, forces the metal structure to be self-supporting in two parts and to be filled by metal trusses (in order to minimize the weight of the structure). The first part (peripheral or outer) is structurally "buckled" in the reinforced concrete structure, coinciding with its axes, ie. metal trusses step on reinforced concrete columns. And the second part "rests" on the first part and is self-supporting, in this way the construction becomes the most effective according to the supporting distance.
The multifunctional hall has an acoustic ceiling, suspended just below the metal trusses. It is an element of a stretched membrane with the necessary sound-reflecting and absorbing capabilities. It partially transmits light, thus creating a homogeneous light environment for spectators and athletes. These elements are radially oriented and, being of different shapes and colors (earth colors), recreate the idea of ​​a "tree crown".

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