Buildings over one story in height that have improper or inadequate exits or facilities for escape in case of fire or that are constructed and used as a school building, theater, hospital, asylum, seminary, hotel, rooming or apartment house, or used for offices, workshops, public entertainment, lodge rooms or other assemblages of people shall be equipped with metal fire escapes which shall conform to the standards provided in Section 15.32.010. The fire escapes shall be erected and arranged in proximity to one or more windows of each story above the first as may be necessary to render the fire escapes readily accessible, safe and adequate for the escape of persons in case of fire. All fire escapes shall be erected and built as required by this chapter and shall at all times be kept in good order and repair by the owner and free from obstruction.