Building #23 is used for general offices and training for GM personnel. Roncelli was contracted to perform complete demolition of the architectural, mechanical and electrical components of the building. This consisted of demolition of the first and second floor walls, doors, ceilings, HVAC system, existing lighting panels, receptacles, wiring, and auxiliary systems. The construction activities were coordinated, sequenced and scheduled to minimize disruption to the ongoing adjacent building activities. While renovating the first and second ….