APPENDIX IX.— DISTRICTING RESOLUTION ANNOTATIONS 



These notes and accompanying diagrams were prepared to explain 

 or illustrate more fully the rules laid down in the resolution. They are not 

 a part of the resolution. They indicate in certain cases the need of supple- 

 mentary rules, which under the resolution may be adopted by the Board of 

 Standards and Appeals. 



Sec. 1, Par. (b). The street line, as here defined, is virtually the 

 same as " building line " as used in the Building Code, except that here 

 the street line is without exception the line dividing the public street or 

 open space from private property. Even where there is a setback by law 

 or by covenant in the deed, the street line remains as above defined. 



Sec. 1, Par. (c). Throughout the resolution where the word "mean" 

 is used, it is intended that it should be taken in the sense of the arithmetical 

 mean or weighted average and not in the sense of half the sum of the ex- 

 tremes. The exact definition of " mean " and the method of its determina- 

 tion may appropriately be covered by a ruling of the Board of Standards 

 and Appeals. In determining the width of the street for the purpose of 

 regulating the height of a building, advantage may be taken of public parks 

 and other open spaces, but this advantage is strictly limited by Section 9, 

 paragraph (a), which applies to streets of more than 100 feet in width 

 the same height regulations that are applied to streets 100 feet in width. 



Sec. 1, Par. (d). This definition of curb level is very nearly the same 

 as the one in the Building Code and the one in the Tenement House Law. 

 It will be observed, however, that in the last clause of Section 1, paragraph 

 (f), the definition of curb in the Tenement House Law will govern wher- 

 ever the building comes under the Tenement House Law. If a corner 

 building faces on a 60-foot street and two 100-foot streets, the height of the 

 building may be determined from the higher of the two 100-foot streets. 

 A street or public open space wider than 100 feet will be considered to be 

 100 feet in width. If a building not on a corner runs through a block from 

 one street to another each street wall will take its height from the street 

 on which it faces, but the yards and courts will all be reckoned from the 

 curb level of the highest street whether on a corner or not. 



Sec. 1, Par. (e). A street wall, as here defined, is not necessarily a 

 wall on the street line. Here the street line is the dividing line between the 

 public legal street and the private property regardless of whether there is 

 a set-back easement or not. If a street wall or a portion of a street wall 

 is set at an angle with the street line, it should be considered as set back 

 at its average distance from the street line. Of course, this will not pre- 

 vent the projection of ordinary dormers and bay windows beyond the street 

 line as allowed in the Building Code, nor will it prevent the projection of 

 wall signs, etc., provided that they keep within the height regulations. The 

 street wall is also intended to include the front walls of set backs as they 

 may occur above the height limit at' the street line and will also include 

 the front walls of dormers, towers and headhouses. The street wall will 

 also include any other wall which is near enough to any street to be affected 

 by the height limits upon such street. 



Sec. 1, Par. (f). The height of a building is virtually the same as 

 defined in the Building Code. A roof sign or other structure on the build- 

 ing would have to come within the height limit. Parapets, dormers, head- 



