1650.07 RESTAURANTS.
   (a)   Every restaurant, whether currently in existence or to be established in the future, with an indoor seating capacity of 30 or more seats, shall designate a no-smoking area consisting of at least 50% of the indoor seating capacity of the restaurant.
   (b)   In areas where smoking is permitted, there shall be adequate ventilation systems to minimize the smoke in adjacent no-smoking areas.
   (c)   In construction of new restaurants where smoking is permitted, there shall be physical barriers and ventilation systems to minimize the smoke in adjacent no-smoking areas.
   (d)   This section shall not apply to:
      (1)   Bars and cocktail lounges, nor shall the seating capacity of any bar or lounge located within a restaurant be included in the calculation of the total seating capacity of the restaurant;
      (2)   Rooms used for private functions and banquets.