Section 10-C2301. WINDOW TYPES

 

2301.1An "existing window" means a windows existing at the time of designation, if supported by documentary evidence, or a window that has been changed subsequent to designation pursuant to a valid permit reviewed by the Board.

 

2301.2A "historic window" means:

 

(a)A window that appears to date from the construction of the historic building, as determined with a reasonable degree of certainty by professional evaluation;

 

(b)A window that is of a type characteristic of the building when constructed, as supported by documentary evidence which may include typologies of similar buildings in similar periods and styles; or

 

(c)A window that was incorporated into the building by a major alteration undertaken within the period of significance of the historic landmark or district, as supported by documentary evidence.

 

2301.3A "special window" means a window that creates a special architectural effect, or is a custom design, not typically found in a manufacturer's catalogue. These windows may or may not be repetitive, and usually involve one or more of the following attributes:

 

(a)Non-rectilinear frame or sash;

 

(b)Transom or side light configuration;

 

(c)Multi-pane configuration with twelve or more panes in a single sash;

 

(d)Curved glass;

 

(e)Stained, leaded, or artistically crafted glazing;

 

(f)Decorated, carved, or embellished sash, frame, or surround; or

 

(g)Projecting bay or oriel.

 

source

Notice of Final Rulemaking published at 51 DCR 7447 (July 30, 2004).