Nestled on the riverfront of Downtown Chicago, Salesforce Tower is located at the epicenter of commercial activity. Trinity Cerami, as the acoustic consultants of this gem of a building, has been working with Hines on core and shell design on the South Tower, concentrating on the façade attenuation and interior acoustical separation between tenant floors It was imperative to ensure noise produced by the surrounding external factors — from the river boats to the elevated rail lines and neighboring public areas — stayed out and not a nuisance to the occupants of the building. A big undertaking has been in the careful planning for vertical and horizontal components to minimize vibration between the fitness center and conference area, as well as occupied spaces above and below.