701.450.  Equal number of water closets, diaper changing stations, requirements — extension of time for compliance, requirements (St. Louis City). — 1.  For any facility for which construction commences after August 28, 1995, which is constructed as a place of assembly for public amusement including, but not limited to, sports stadiums and arenas, auditoriums and assembly halls, there shall be provided an equal number of water closets for women as there are the number of water closets and urinals provided for men, and there shall be provided an equal number of diaper changing stations for men as there are the number provided for women.

  2.  Each facility described in subsection 1 of this section constructed or under construction prior to August 28, 1995, shall provide water closets in the same ratio as required in subsection 1 of this section whenever such facility undergoes major structural renovation.

  3.  As used in subsection 2 of this section, the term "major structural renovation" means any reconstruction, rehabilitation, addition or other improvement which required more than fifty percent of the gross floor area of the existing facility to be rebuilt.  The provisions of this act shall only apply to such portions of the building being renovated and not to the entire building.

  4.  Notwithstanding any other provision of this section to the contrary, if any facility described in subsection 1 of this section located in any city not within a county is constructed in compliance with the requirements of the applicable building and plumbing codes of such city related to the minimum number of water closets that are designated for women, such facility shall not be required to comply with the requirements of subsection 1 of this section until one year following the date of its substantial completion.