Fences may be constructed of wood, masonry, iron, wire fence, or grown as hedges. All construction is to be done in such manner as to leave no sharp or protruding ends, barbs, or projections. Fences shall not be made of used materials such as pallets, conveyor chain, tin siding, rusted pipe, vehicle bodies, wheel rims, tires, tarps and/or sheet plastic, bed springs, multi-colored materials (except colored materials manufactured specifically for fencing, i.e., slats of chain link fences), corrugated sheet metal, and similar or like materials not traditionally manufactured or used for fencing purposes.