Caja Mágica Sports Complex

The Caja Mágica is one of the most distinctive sports facilities ever constructed in Spain, designed to host international tennis tournaments and large-scale sporting events. Developed on a 17-hectare site adjacent to the Manzanares River in Madrid, the complex combines reinforced concrete, prestressed concrete, structural steel and large precast elements. Its structural design incorporates innovative independent retractable roofs over the main courts, representing one of the most complex construction systems implemented in a European sports venue

The development comprises approximately 104,000 m² of built area, including three main covered courts, an indoor tennis building with eleven covered courts, auxiliary facilities, technical service galleries, parking areas and supporting infrastructure. The primary structure was executed using large reinforced and prestressed concrete elements, featuring long spans, heavily reinforced columns and structurally complex portal frames

ERSIGROUP participated in the supply, fabrication and installation of reinforcing steel for columns, portal frames, slabs, retaining walls, technical galleries and the main structural components of the complex. The project required the industrialized production of large reinforcement assemblies, some of which were comparable in size and complexity to those typically used in major civil engineering projects. Particularly noteworthy were the prefabricated reinforcement cages for columns reaching 12 m in height and 11 tonnes in weight, as well as the specialized reinforcement for portal frames, grandstands and structural elements associated with the retractable roof system

The implementation of industrialized reinforcement fabrication and preassembly processes enabled optimized logistics, reduced construction schedules and improved quality and safety standards during installation. The scale of the reinforcement works and the complexity of the structural solutions make this project a benchmark among the special projects delivered by ERSIGROUP

KEY MILESTONES:

• 104,000 m² sports complex developed as a world-class multifunctional venue
• Constructed on a 17-hectare site adjacent to the Manzanares River in Madrid
• Three main covered tennis courts with seating capacities of 2,500, 3,500 and 12,000 spectators
• Indoor tennis facility comprising 11 covered courts
• 16 outdoor tennis courts for competition and training
• Retractable roof system covering approximately 26,000 m²
• More than 13,000 tonnes of reinforcing steel fabricated and installed
• Prefabricated reinforced concrete columns measuring up to 1.50 m × 1.50 m in section, 12 m in height and weighing up to 11 tonnes
• Construction of 600 m of retaining walls and 800 m of technical service galleries