We prepared the insulation and acoustic conditioning project for the entire ninth floor, which was intended for collective use and had double ceiling height, including an infinity pool suspended on this floor. The objective was to allow the party room, gourmet area, gym, swimming pool and collective laundry to be used at night without causing disturbance to the neighbors (impact noise and airborne noise). The goal was to comply with the criteria of NBR 15.575 – acoustic performance.