This Chapter is declared to be an ordinance to promote the general health, welfare and safety of the people in the City; and is enacted for the promotion and protection of the public health and safety; and to prevent nuisances, the spread of disease and fire hazards. It is the purpose of this Chapter to aid the people in keeping the City clean, safe, sanitary and free from petty annoyances and nuisances. (1958 Code, ch. VII, art. 2)