327

327.1

The projections identified in the following table are permitted to encroach into any required height transition plane subject to the following limits:

TABLE B § 329.1: LIMITATIONS ON ENCROACHMENT INTO ANY REQUIRED HEIGHT TRANSITION PLANE

PROJECTING ELEMENT	LIMITATIONS
Cornices and eaves	Not to exceed 2 ft.
Sills, leaders, belt courses, and similar ornamental or structural features	Not to exceed 6 in.
A balcony railing	Not to exceed 4 ft.
Skylights	Not to exceed 4 ft.
A chimney, smokestack, or flue	No limit
Spires	No limit
Towers, including towers erected from the ground	No limit
Domes, minarets, pinnacles, pergolas and similar architectural embellishments	No limit

327.2

The projections and structures identified in the following table may encroach into any required buffer transition setback, up to the limits specified:

TABLE B § 329.2: LIMITATIONS ON ENCROACHMENT INTO ANY REQUIRED BUFFER TRANSITION SETBACK

PROJECTING ELEMENT	LIMITATIONS
Cornices and eaves	Not to exceed 2 ft.
Sills, leaders, belt courses, and similar ornamental or structural features	Not to exceed 6 in.
The ordinary projection of skylights, above the bottom of the minimum side setback	Shall be placed so as not to obstruct light and ventilation
Awnings serving a window, porch, or door	Not to exceed 40 in.
A chimney, smokestack, or flue	Not to exceed 2 ft.
A self-contained air conditioner	Not to exceed 2 ft.
Building components or appurtenances dedicated to the environmental sustainability of the building	Not to exceed 4 ft.
A structure, including a building	Must be less than 4 ft. in height above the grade at any point. Any railing required by the D.C. Construction Codes Supplement, 12 DCMR, shall not be included in the measurement of the structure's height.
A fence or retaining wall	Must be constructed in accordance with the D.C. Construction Codes Supplement, 12 DCMR
Stairs and associated D.C. Construction Code Supplement required guard rails	Must lead to the first story of the building located entirely above grade, or to a story below grade

An antenna	Must comply with all other requirements of this title

SOURCE: Final Rulemaking published at 63 DCR 2447, 2650 (March 4, 2016 – Part 2).