CHAPTER 18 WALLS, FENCES AND HEDGES This chapter is included in your selections. 10-18-1: Requirements 10-18-2: Requirements on Corner Lots 10-18-3: Retaining Walls 10-18-4: Fences 10-18-5: Barbed Wire 10-18-6: Permit Required 18A Rockery Walls10-18A-1: Rockery Walls Subject to This Article – Permit Required10-18A-2: Documents Required for Permit10-18A-3: Site Conditions10-18A-4: Construction10-18A-5: Limitations10-18A-6: Setbacks10-18A-7: Structural Analysis10-18A-8: Materials10-18A-9: Inspections