Morrisville Unified Development Ordinance

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

T REE P IT A pit within a sidewalk, courtyard, or other paved area that is sized and filled with planting soil to a sufficient depth to accommodate the root ball of a tree. Tree pits may uncovered or covered with grating or other permeable material that allows the in filtration of water to the tree’s roots. T REE P ROTECTION A REA An area composed of closely grouped healthy trees designated for preservation and protection, delineated by both the critical root zone and drip line. T REE P ROTECTION P LAN A plan prepared by an ISA-certified arborist, registered landscape architect, or a registered forester that is intended to provide accurate information regarding the condition, welfare, maintenance, and value of existing trees. T REE S URVEY A survey performed by an ISA-certified arborist, registered Landscape Architect, or a Registered Forester — including, but not limited to, species, location, general health, and DBH of all individual trees or stands of trees selected to be applied towards the minimum existing tree canopy coverage on site. T REE , M ATURE Trees that have reached at least 75 percent of their final height and spread as listed in the Administrative Manual. T REE , S HADE A self-supporting woody perennial plant, usually with one vertical stem or main trunk, that naturally develops a more or less distinct and elevated crown and that, at maturity, provides shade to an area at least 35 feet in diameter. A shade tree may have two or more trunks, which is a natural characteristic of some species. T REE , S PECIMEN Any deciduous tree that has a DBH of 24 inches or greater, except any tree listed as a non-native invasive plant by the US Forest Service or the NC Forest Service. T REE , I NDIVIDUAL A tree that is not located within a stand of trees.

T REES , S TAND OF Three or more uniform, mature trees that form a continuous canopy.

T REE , S TREET Any shade tree placed in a street right-of-way.

T REE , U NDERSTORY An evergreen or deciduous tree whose mature height for its species can be expected to not exceed 25 feet. These are ideal for planting in streetscapes where overhead power lines would necessitate unsightly pruning. T RIP A single travel movement with either the origin or destination of the trip inside the study area of the Transportation Impact Analysis.

Morrisville, NC

October 1, 2021

Unified Development Ordinance

Page 11-87