If necessary, such notice shall also require the building, structure or portion thereof to be vacated forthwith and not reoccupied or used until the specified repairs and improvements are completed, inspected and approved by the Commissioner of Buildings who shall cause to be posted at each entrance to such building or structure a notice:
"THIS STRUCTURE IS IN A DANGEROUS CONDITION AND HAS BEEN CONDEMNED AND ITS USE HAS BEEN PROHIBITED BY THE COMMISSIONER OF BUILDINGS. “
(Ord. 1965-187. Passed 11-5-65.)