The Basement of the building contains mechanical and electrical spaces, storage areas, and a limited pedestrian connection to the adjacent Mall at the Concourse level. The study included the replacement of the existing piping systems, the removal of the existing abandoned piping and conduit systems, and the provision of new mechanical systems in new areas to serve the existing spaces in their new configuration. Piping runs were planned to be located below slab in the corridor areas, in order to permit adequate headroom in the public spaces.

A complete upgrade of the electrical system is included, and includes replacement of the main service, the provision of new power and lighting panels in the Basement, and the provision of a new lighting system. A fire alarm system, including smoke detection, pull stations, audible/visual annunciators, fan shutdown, central station annunciation, is included.

Plumbing systems were to include the replacements of the existing pressure piping, and provision of new systems to serve the proposed cafeteria that was to be located in the Basement. Connections were to be made to the piping systems serving the upper levels of the building.

A sprinkler system was to be provided, including replacement of the existing fire pump, and new sprinklers throughout. Connections were to be made to the piping systems serving the upper levels of the building.