HASSAIRI STEEL INDUSTRIE (HSI) designed and constructed the steel structure for an indoor sports arena intended to host sporting activities in a functional, safe, and sustainable space. The project is characterized by the use of long spans, allowing for an unobstructed interior space without intermediate columns, which is ideal for versatile use. HSI’s work involved the fabrication in the workshop, assembly, and on-site installation of the steel frame, in accordance with current standards for buildings open to the public. The technical solutions selected ensure excellent structural stability, good natural ventilation, and optimal durability of the structures.