Any person engaged in and having supervision and charge of the building, erection, or construction of any block, building or structure who shall neglect or refuse to place or have placed upon the joists of each and every story of such block, building or structure as soon as the joists are in position, counter floors of such quality and strength as to render perfectly safe the going to and fro thereon of all mechanics, laborers, and other persons engaged upon the work of construction or in supervising the same or in the building or placing of materials therefor, shall be deemed guilty of a misdemeanor, and upon conviction thereof in any court of competent jurisdiction shall be fined in any sum not less than Twenty-five Dollars ($25.00) nor more than Two Hundred Dollars ($200.00), and each and every day that such person, contractor, agent, factor or architect shall neglect or refuse to have such floors so placed as aforesaid, after written notice by the building inspector or from any person whose life or personal safety may be endangered by such neglect or refusal shall be held and considered a separate offense, severally liable to the penalties aforesaid.