Unified Development Ordinance

Article 11: Interpretation and Definitions Section 11.5. Terms and Uses Defined 11.4.3. Illuminated Signs

H ARD S URFACE As pertaining to driveways, drive aisles, parking, sidewalks, loading areas, and storage for vehicles, recreation vehicles, travel trailers, commercial equipment, trailers, boats, and other similar uses — it is a durable surface constructed of concrete, asphalt, brick pavers, or similar material. For the purpose of calculating the lot coverage, it also includes surfaces of gravel or other loose aggregate except if used in lieu of mulch or pine straw around the base of foundation plantings required in Section 5.12.5, Foundation Plantings. H AZARDOUS W ASTE F ACILITY For purposes of floodplain management, and as defined in N.C.G.S. 130A, Article 9, a facility for the collection, storage, processing, treatment, recycling, recovery, or disposal of hazardous waste. H EDGE A group of shrubs planted in line or in groups that forms a compact, dense, visually opaque living barrier that demarcates and/or screens an area from on-site or off-site views. H ELIPORT An area, either on ground level or elevated on a structure, licensed or approved for the landing and takeoff of helicopters and which may include auxiliary facilities such as parking, waiting room, fueling, and maintenance equipment. HID High intensity discharge lighting, a bulb type including mercury vapor, metal halide, high pressure or low-pressure sodium lighting, which glows when an electric current is passed through a gas mixture inside the bulb. H IGHEST A DJACENT G RADE For purposes of floodplain management, the highest natural elevation of the ground surface, prior to construction, immediately next to the proposed walls of the structure. (a) Listed individually in the National Register of Historic Places (a listing maintained by the US Department of Interior) or preliminarily determined by the Secretary of Interior as meeting the requirements for individual listing on the National Register; (b) Certified or preliminarily determined by the Secretary of Interior as contributing to the historical significance of a registered historic district or a district preliminarily determined by the Secretary to qualify as a registered historic district; (c) Individually listed on any inventory of historic landmark adopted by the Town of Morrisville or Wake County; or (d) Certified as contributing to the historical significance of a historic district designated and adopted by the Town of Morrisville. H OME O CCUPATION A business, profession, occupation, or trade that is conducted within a residential dwelling unit for the economic gain or support of a resident of the dwelling, is incidental and secondary to the residential use of the lot and does not adversely and/or perceptively affect the character of the lot or surrounding area. H ISTORIC S TRUCTURE Any structure that is:

Morrisville, NC

October 1, 2021

Unified Development Ordinance

Page 11-45