(A) In the Residence and Business "A" Districts, schools, churches, hospitals, and sanitariums may be erected to a height not exceeding 60 feet, and such height shall contain no more than 6 stories; provided the front, side, and rear yards are increased an additional foot for each 2 feet the building exceeds 45 feet in height.
(B) Chimneys, monumental towers, monuments, scenery lofts, cupolas, domes, spires, false mansards, belfries, conveyors, flagpoles, masts and aerials, water tanks, similar structures, and necessary mechanical appurtenances may be erected to any height approved by the planning commission.
(C) In the Residence District, when 50% or more of the lots on the same side of the street within the same block and within 200 feet are occupied by principal buildings, 75% or more of which conform within 5 feet to an average alignment, no building shall hereafter be erected or structurally altered in the district so as to project beyond such average alignment; provided no front yard need exceed 40 feet in depth in any case. The requirements of this section shall apply only on the front lot line of a corner lot.
(D) In the Residence District, no alignment setback or front yard shall be required to exceed the average of the minimum depths of the existing front yards on the lots adjacent on each side, provided each of such lots are within the same block and within 100 feet.
(E) In the Residence District, open porches shall conform to the average alignment of the existing open porches within the same block and within 200 feet; provided no front yard need exceed 30 feet in depth in any case.
(F) In the Business Districts, no side yards are required, but if a side yard is substituted for a required court it shall conform to the provisions of this chapter for side yards in the Residence District, and for the purpose of determining its width, the lowest story it is required to serve shall be considered the first story.
(G) No rear yard shall be required for nonresidence occupancies on that portion of any lot in the Business Districts within 50 feet of any street, except that along the rear lot line of any lot which serves as a side lot line of any lot in the Residence District, there shall be a rear yard the minimum dimension of which shall conform to the provisions of this chapter for a rear yard for nonresidence occupancies in the Business "A" District.
('73 Code, § 150.12)