The district height limitations stipulated elsewhere in this chapter may be exceeded, but such modification shall be in accord with the following:
A. 
Architectural projections. Architectural projections such as spires, steeples, belfries, parapet walls, cupolas, domes, flues, and chimneys are exempt from the height limitations of this chapter.
B. 
Special structures. Special structures such as elevator penthouses, gas tanks, grain elevators, observation towers, and scenery lofts, manufacturing equipment and necessary appurtenances, cooling towers, fire towers, substations, and smokestacks are exempt from the height limitations of this chapter.
C. 
Essential services, utilities, water towers, windmills, and electric power and communication transmission lines. Essential services, utilities, water towers, windmills, and electric power and communication transmission lines are exempt from the height limitations of this chapter.[1]
[1]
Editor's Note: Original Subsection D, Communications structures, which immediately followed this subsection, was repealed 6-24-2009 by Ord. No. 09-03.
D. 
Public or semipublic facilities. Public and semipublic facilities, such as schools, churches, hospitals, monuments, sanatoriums, libraries, and governmental offices and stations, may be erected to a height of 60 feet, provided all required yards are increased not less than one foot for each foot the structure exceeds the district's maximum height requirement.
E. 
Modification of other ordinances and regulations not permitted under this article. Modifications permitted under this article of this chapter do not modify any requirements of federal, state, or local building codes relating to the elements addressed in this article of this chapter.
The yard requirements stipulated elsewhere in this chapter may be modified as follows:
A. 
Uncovered stairs, landings, and fire escapes. Uncovered stairs, landings, and fire escapes may project into any yard, but not further than six feet and not closer than three feet to any lot line.
B. 
Architectural projections. Architectural projections, such as chimneys, flues, sills, eaves, belt courses, and ornaments, may project into any required yard, but such projections shall not exceed two feet. [See § 500-16E(1) and (2) of this chapter for exceptions.]
C. 
Essential services, utilities, and electric power and communication transmission lines. Essential services, utilities, and electric power and communication transmission lines are exempt from the yard and distance requirements of this chapter.
D. 
Landscape buffer yards, landscaping, vegetation, and areas of natural resource features mitigation exempt from yard and setback requirements. Landscape buffer yards, landscaping, vegetation, and natural resource features mitigation areas are exempt from the yard and setback requirements of this chapter. Landscape plantings such as shrubs shall not be permitted in the street right-of-way, unless approved by the Plan Commission.
Additions in the street yard of existing structures shall not project beyond the average of the existing street yards on the abutting lots or parcels.
Structures shall provide a street yard as required by this chapter on the street that the structure faces. A second street yard shall be provided on the side of the structure abutting a second public or private street. The setbacks on each street shall be as specified in this chapter.
Lots abutting two opposite streets shall provide the front yard setback required by the district in which the lot is located from each street upon which the lot abuts.
Where a lot is located partially within a deed-restricted and preserved natural resource protection area or open space area (see Articles VIII and XV), that portion of the lot in such an area may be utilized to meet the lot area requirements of the zoning district. In no case, however, shall such eligibility be used to increase the maximum permitted net floor area ratio (NFAR) or maximum net density (ND) of any parcel of land or lot which exceeds those levels as determined by the site intensity calculations and capacity calculations of Article VIII of this chapter.
Sirens, whistles, and bells which are maintained and utilized solely to serve a public purpose are exempt from the sound-level standards of this chapter. (Also see § 500-103B.)