Architectural projections, such as spires, belfries, parapet walls, cupolas, domes, flues and chimneys, shall not exceed in height their distance from the nearest lot line and shall not exceed a fifty-foot maximum height.

Special structures which are essential to permitted uses in commercial and industrial districts, including but not limited to mechanical penthouses on commercial or industrial buildings, storage tanks, grain elevators, communications receiving equipment, manufacturing equipment and necessary mechanical appurtenances, cooling towers, fire towers, electrical, and smoke stacks up to 50 feet in height, are exempt from the height limitations of this chapter.

Essential services, utilities, water towers, electric power and communications transmission lines are exempt from the height limitations of this chapter.

Communication structures, such as radio and television transmission and relay towers and aerials, shall not exceed in height three times their distance from the nearest lot line. Upon request, the Plan Commission may allow the height to be less than three times the distance from the nearest lot line if it deems a lesser requirement is safe and reasonable given the surrounding area. Under no circumstances, however, may the requirement be reduced to less than 1.5 times the distance from the nearest lot line.

Agricultural structures, such as barns, silos and windmills, shall not exceed in height twice their distance from the nearest lot line.

Public or semipublic facilities, such as schools, churches, hospitals, monuments, sanitariums, libraries, governmental offices and stations, may be erected to a height of 50 feet, provided that all required yards are not less than one foot for each foot of building height. District setback minimums shall apply in all cases.

Uncovered stairs, landings and fire escapes may project into any yard, not to exceed six feet of projection and not closer than five feet to any lot line.

Architectural projections, such as chimneys, flues, sills, eaves, belt courses and ornaments, may project into any required yard, but such projection shall not exceed two feet.

Residential fences are permitted adjacent to property lines in residential districts but shall not in any case exceed a height of six feet six inches and shall not exceed a height of four feet six inches in the street yard and shall not be closer than two feet to any public right-of-way.

Security fences are permitted adjacent to property lines in all districts except residential districts but shall not exceed 10 feet in height and shall be of an open type similar to woven wire or wrought iron fencing. No barb wire fences are allowed in R-1, R-2, R-3 Districts unless property borders the R-A District.

Essential services, utilities, electric power and communication transmission lines are exempt from the yard and distance requirements of this chapter.

Landscaping and vegetation are exempt from the yard requirements of this chapter except for special conditions as established within the Industrial Park.

Uncovered decks, porches, or like structures may not project more than 10 feet into required street or rear yards nor be closer than 15 feet to a street right-of-way or rear lot line.