An arched frame-tent structure of the Duna type, based on a steel frame with metal protection by hot-dip galvanizing. Arched tents are often used for mass and entertainment events, buffets, banquets, seating in catering facilities, and other purposes. The advantages of the structure include its light weight, quick assembly, long service life, and collapsible design. Duna-type tents are often seen as part of temporary infrastructure in the complex development of frame-tent structures for large-scale events.