Low voltage infrastructure (Data, Voice, PA, Master Clock, Classroom Audio/Video enhancement, CCTV, Intrusion) been designed for new Performing Arts Center in Crenshaw H.S. Work scope also include backbone cabling for all systems, done by underground conduits coming from the main building. The main challenge of the project was to identify current signal lines, reschedule lines touched by new projected building thru new underground conduits and develop a work scope to keep all systems of the facility alive during construction.