Unified Development Ordinance, 4th supplement, September 2017
Part 10A: Unified Development Ordinance City of Raleigh, North Carolina 12 – 9 Effective Date: September 01, 2013 Supp. No. 2 Article 12.2. Defined Terms | CHAPTER 12. DEFINITIONS G Future Conditions Flood Elevation A determination of the water surface elevations of the 1 percent annual chance flood based on future conditions hydrology as published in the flood insurance study. This elevation, when combined with 2 additional vertical feet, establishes the regulatory flood protection elevation in future conditions flood hazard areas. Future Conditions Flood Hazard Area The land area that would be inundated by the 1 percent annual chance flood based on future conditions hydrology as determined in this UDO. Future Conditions Hydrology The flood discharges associated with projected land use conditions based on Raleigh’s zoning maps or the Comprehensive Plan’s Future Land Use Map or both and without consideration of projected future construction of flood detention structures or projected future hydraulic modifications within a stream or other waterway such as bridge and culvert construction, fill and excavation. Future conditions flood discharges are published in the flood insurance study. g Glare The effect produced by a light source within the visual field that is sufficiently brighter than the level to which the eyes are adapted, to cause annoyance, discomfort or loss of visual performance and ability. Governmental Entity Any department, commission, agency or other instrument of the Federal, State, County or municipal government. Gross Floor Area The sum in square feet of the gross horizontal area of all floors of a building measured from the exterior walls or from the centerline when 2 buildings or units abut. Gross floor area includes basement floor area when more than 50% of the basement height is above the established curb level or above the finished lot grade level where the curb level has not been established. Elevator shafts, stairwells, floor space used for mechanical equipment, attics, balconies and mezzanines, enclosed porches and floor area devoted to accessory uses are included in the calculation of gross floor area. However, the following shall not be included: any space devoted exclusively to on-site parking; outdoor loading, display, storage, utility service areas; and/or uninhabited enclosed space on tops of roofs; or attic space having head room of less than 7'-10". Ground Cover Any living or nonliving material incorporated in or covering the surface of the soil which controls accelerated erosion and prevents off-site sedimentation in accordance with this chapter. h Hazardous Tree A tree is hazardous when it meets all of the following as determined by a Certified Arborist: 1. It has a structural defect that predisposes the entire tree, or at least 1/5 or more of the tree's crown, to structural failure; 2. The DBH of the tree predisposed to structural failure is at least 10 inches, or the diameter of the crown limb(s) predisposed to structural failure is at least 8 inches at the largest point; 3. The structural defect has a failure potential of "medium" or greater as described in the current edition of A Photographic Guide to the Evaluation of HazardTrees in Urban Areas , published by the International Society of Arboriculture, and cannot be remedied by an accepted arboricultural practice; 4. A target exists beneath or adjacent to the tree that could be injured or damaged, including but not limited to: pedestrians, vehicles, streets, sidewalks, buildings and other man-made structures. Hazardous Waste Facility A facility for the collection, storage, processing, treatment, recycling, recovery or disposal of hazardous waste, as defined in N.C. Gen. Stat. §130A‑290. Heritage Tree A single-trunk shade tree that is 24 inches DBH or larger, or a single-trunk understory tree that is 12 inches DBH or larger that is not unhealthy and not a hazardous tree.