No more than 30 feet of continuous street wall shall be created for any new building or structure on a side facing a public street, unless a break in depth of not less than three inches and no more than three feet is provided at intervals of not less than 20 feet accomplished through elements to achieve this street wall variation which shall include, but be not limited to, such features as varying facade cladding, vertical building extensions, window and door fenestration, recessed or extended doorway entrances, pilasters, piers, display windows, bay windows, bow windows and other appropriate elements that project from or extend into the street wall. See Figure 9-2.