Morrisville Unified Development Ordinance - April 2019

Article 11: Interpretation and Definitions Section 11.4. Measurement, Exceptions, And Variations of Intensity and Dimensional Standards 11.4.2. Exceptions and Variations

B. Reduction of Minimum Front Setbacks to Block Face Average If the average front setback on improved lots located on the same block face and in the same zoning district is less than the minimum front setback applied to a lot by the standards in Article 3: Zoning Districts, the minimum front setback applicable to a lot on the block face shall be reduced to such average. Calculation of the average shall exclude any front setback that exceeds the next deepest setback by more than 15 feet. (See Figure 11.4.2.A: Reduction of Minimum Lot Area, Lot Width, and Front Setback to Block Face Average.) The maximum structure height limits established in Article 3: Zoning Districts, shall not apply to the following structures or structural elements: Monuments, water towers, silos, granaries, barns, utility transmission towers, derricks, cooling towers, fire towers, and other similar structures not intended for human occupancy. Spires, belfries, cupolas, domes, chimneys, elevator shaft enclosures, ventilators, skylights, mechanical equipment and appurtenances, and similar rooftop structures or structural elements not intended for human occupancy, provided they: b. Comply with applicable screening requirements for mechanical equipment and appurtenances in Section 5.13.1, Screening of Exterior Mechanical Equipment; and c. Extend above the applicable maximum height limit by no more than 25 percent of the height limit (unless otherwise allowed in this Ordinance). Ham radio antennas, broadcast facility, roof-mounted satellite dishes, and television or radio antennas, provided they comply with height limits established for the specific use in Section 4.3.5, Accessory Use-Specific Standards. Roof-mounted solar energy collection systems, in accordance with the height standards in Section 4.3.5.B.27, Solar Energy Collection System (as an accessory use). Small wind energy systems, in accordance with the height standards in Section 4.3.5.B.26, Small Wind Energy System. Telecommunication facilities, in accordance with the height standards in 2.5.25, Wireless Telecommunication Facilities. D. Allowable Encroachments into Required Yards Every part of every required yard shall remain open and unobstructed from the ground to the sky except as otherwise allowed in Table 11.4.2.D, Allowable Encroachment into Required Yards, or allowed or limited by provisions in Article 4: Use Standards, Article 5: Development Standards, Article 6: Riparian Buffers, Article 7: Stormwater Management, or elsewhere in this Ordinance. (See Figure 11.4.2.D: Allowable Encroachments into Required Yards.) (Ord. No. 2014-051, 11/10/2014) C. Exceptions to Maximum Structure Height a. Cover not more than 25 percent of the roof area of the structure to which they are attached;

April 23, 2019

Morrisville, NC

Page 11-14

Unified Development Ordinance