Specifications include, but are not limited to: Replace air handling units (AHU-3, 7, 8, 9) in mechanical penthouse in building T. Disconnect, demolish and extend ductwork, chilled water and heating water piping as required to the new air handling units. Extend existing building automation system (BAS) controls and provide new controls and accessories for new air handling units. Reconfigure branch sprinkler piping and sprinklers as required based on the new air handling unit and ductwork layout. Provide power distribution and grounding as required for new air handling units. Extend the existing fire alarm system as required to the new air handling units. Provide new overhead garage door in wall of penthouse and all associated general trades work.