Imminent danger. When, in the opinion of the Code Official, there
is imminent danger of failure or collapse of a building or structure
which endangers life, or when any structure or part of a structure
has fallen and life is endangered by the occupation of the structure,
or when there is actual or potential danger to the building occupants
or those in the proximity of any structure because of explosives,
explosive fumes or vapors or the presence of toxic fumes, gases or
materials, or operation of defective or dangerous equipment, the Code
Official is hereby authorized and empowered to order and require the
occupants to vacate the premises forthwith. The Code Official shall
cause to be posted at each entrance to such structure a notice reading
as follows: "This structure is unsafe and its occupancy has been prohibited
by the Mayor/Code Official." It shall be unlawful for any person to
enter such structure except for the purpose of securing the structure,
making the required repairs, removing the hazardous condition or of
demolishing the same.