Whenever a fire shall occur in the City, the Fire Chief or Acting Fire Chief is hereby empowered during the continuance of such fire, to prescribe the limits within which it shall be unlawful for any person to come excepting members of said Fire Department, the owners of the premises included in such limits, and such other persons as may be specially admitted by the said Fire Chief or Acting Fire Chief. It shall be unlawful for any person other than those above specified to enter within such limits at any time during the progress of a fire. (1-714; 1947 Code)