The competition is for the design of a multi-purpose hall and the accompanying service building as a part of Tranby Arena in Lier municipality. The facility shall be a flexible and future orientated sports building suitable for all sports, school use and local activity. The multi-purpose hall shall provide good playing surfaces for several sports and it can be used by different age groups throughout the year. The service building shall include the necessary support functions such as changing rooms, storage, technical rooms and social communal areas, with clear and efficient logistics between the hall and outside areas.