Cisco Systems new Engineering Approvals Center provides an example of the successful application of noise and vibration control principles in a mixed-use building. The Vibration Laboratory portion of the building is designed for maximum throughput and comprises a number of powerful noise and vibration sources, including four hydraulic shaker tables with hydraulic pumps, an electrodynamic shaker table, two drop shock tables, and a package drop area. Because office spaces, conference facilities and sensitive high-performance EMC chambers are located directly above and adjacent to the Vibration Laboratory, a considerable degree of isolation was designed into the structure to preserve an officelike environment in these areas. Design and installed performance of critical building elements will be discussed, including the isolated slab and vibration breaks, noise-isolating control room, walls, windows, doors and ceiling.