Engineering students at the University of baby直播app Boulder are gearing up for several days of intensive activity next week, when they will celebrate Engineering Days and display their hands-on design projects at the annual spring Engineering Design Expo. Engineering Days, or E-Days, is an annual celebration of the engineering profession organized by the University of baby直播app Engineering Council, or UCEC, and student honor societies. Activities include a water rocket launch, high school and college egg drops, a carnival and other fun activities for students.