There are two elevated mezzanines that serve different escalators and exits. Industrial mezzanines, such as those used in warehouses, may be temporary or semi-permanent structures. Several stations also only contain elevators leading from street level to their respective mezzanines. Some industrial mezzanines may also include enclosed, paneled office space on their upper levels. The Philippine Center has seven floors, two mezzanines, and a basement. Mezzanines may or may not be counted as storeys. Any musician/entertainer may perform in subway mezzanines and platforms. The airport will have 5 floors all together&colon; 3 main floors and 2 mezzanines. On the roof of the mezzanines at each station are cross ties but no rails. Mezzanines with faregates are located at both ends of the station. Service mezzanines are located on each side of the hangar. Mezzanines, however, may have lower-than-normal ceilings due to their location. Adjacent to this vast space are two large mezzanines. The station has two mezzanines, separated at Fulton Street. Three shallow mezzanines provided an unobstructed view of the stage.