The project expected the construction of a new club house dedicated to the club members. The volume for technical necessity must take the parallelepiped established form. Therefore decided to set in on the envelope system, creating a diamond-shaped frames like a tennis racket strings. The main structure is then drilled through irregular openings that allow access to inside open space. Through the use of variable-size walls, deny the puntual laminated wood structure, articulating outside in full and empty scores