This project is a new 15-story build-to-suit headquarters for Christus Health located in Las Colinas, with a 10-story open parking garage adjacent. The garage and tower are connected by 1 underground parking garage level. Level 3 is the conference center floor with a kitchen and seating area. Outdoor terraces on several floors, including a large terrace on Level 3, allow the occupants to enjoy the outdoors in different ways. The HVAC system is served by air-cooled chillers on the roof, serving an air handling unit on each floor. Each floor contains a medium-pressure duct loop with zones served by VAV boxes and electric reheat as needed. The building is served by medium voltage electrical distribution with medium voltage substations at the basement and roof levels. Electrical bus ducts serve up and down the building to serve each floor's electrical needs. The plumbing system is served by a domestic water booster pump on the basement level. Hot water is fed economically with water heaters serving multiple floors.