Building height, including parapets and roof surfaces, but not
including roofscape features, mechanical equipment, elevator shafts,
chimneys, vents and stacks, rainwater-harvesting structures, limited
recreation or building amenities, and the like, shall not exceed 54
feet. When the side of a building is adjacent, in whole or in part,
to other districts or streets or alleys that abut other districts,
an outside wall over 42 feet in height, including parapets, mechanical
equipment, minor roof surfaces, other minor structural elements, elevator
shafts, chimneys, vents and stacks, and the like, but not including
roofscape features limited recreation or building amenities, must
be at least 10 feet behind the face of the outermost wall below it
(averages may be used for irregular surfaces). In all cases, the height
of mechanical equipment, elevator shafts, chimneys, vents and stacks,
and the like, shall be minimized, screened in an aesthetically appropriate
manner, and hidden from street view and adjacent buildings of equal
or greater height as much as possible. All mechanical equipment, elevator
shafts, chimneys, vents and stacks, and the like shall be fully screened
from all vantage points, including the street and adjacent buildings
of equal or greater height, in a manner compatible with the architectural
style of the building. The screening shall not impair the functioning
of the equipment. Individuals and parties undertaking construction
or renovation projects may consider a more detailed roofscape plan
that includes visually appealing elements that screen mechanical equipment
while incorporating limited recreation or building amenities, including
green roofs and rooftop gardens, patios, terraces, and decks.