Most of the floor is a multi-purpose hall, with an interior length of 55.60 m, a width of 32.40 m and a free height of 10.35 m. A longitudinal arrangement for the hall has been set out -subdivided by two curtains with transverse foldings, allowing three basketball courts.
The versatility of the pavilion, has determined the position of the competition hall, which is surrounded by all the public spaces and users, with a two main level organization, rather independent. The lower level is the court one, with four specialized bands that surround it and contain the different sections. In the higher level are the public entrances and, surrounded by the terraces are placed the hall, bathrooms, authorities and press hall and the café. In higher levels exists different types of bridges of lighting or maintenance.
The roof gives the building a unitary appearance, that moves the volume of the big interior space, being configured as a laying vault, with an arc section, covered with steel panels, over which emerge four rows of skylights, that face north.
The relation between the roof and the skylights, gives the pavilion a changing appearance, from both the farthest and the foreshortening views. Below the roof, the building shows smooth glass surfaces of different characteristics, fitted in the steel made support structure.
The façades consist of horizontal bands formed by double panels of U-glas, transparent glass and ceramic panels, with a sequence defined west by the volumes and the courtyards of the first floor. The south façade of the building reproduces the cross section of the pavilion, in which finishing, corresponding to the characteristics of the roof structure, appears behind the enclosure with regard to the façade plane, remarking that way the protagonism of the roofs layout.