240 BOARD OF ESTIMATE AND APPORTIONMENT 



part in addition to all yard and court requirements for a C district, such 

 part shall be subject to the regulations herein prescribed for a C district. 

 Such joint recreational space shall be composed of one or more tracts, each 

 of which shall be at least 40 feet in least dimension and 5.UU0 square Eeet 

 in area and shall be approved by the Board of Appeals as suitable for tbe 

 joint recreational use of such residents. 



§15. E Districts, (aj In an E district a rear yard at any given height 

 shall be at least rive inches in least dimension for each one foot of such 

 height. The depth of a rear yard at its lowest level shall be at least 15 per 

 cent of the depth of the lot, but need not exceed 15 feet at such level. If 

 a building in an E district is located in a residence district as designated on 

 the use district map, the depth of a rear yard at its lowest level shall be ai 

 least 25 per cent of the depth of the lot, but need not exceed 25 feet at such 

 level. However, for each one foot in excess of 10 feet of the depth of such 

 rear yard at its lowest level there may be substituted one foot of depth 

 of unoccupied space across the whole width of the front of the lot at the 

 curb level between the street line and the street wall of the building. In 

 an E district on at least one side of every building located within a residence 

 district there shall be a side yard along the side lot line for the full depth 

 of the lot or back to the rear yard. 



(b) In an E district an outer court or side yard at any given height 

 shall be at least two and one-half inches in least dimension for each one 

 foot of such height. On a lot not more than 50 feet in mean width an outer 

 court or a side yard at any given height shall be at least two inches in least 

 dimension for each one foot of such height. An outer court at any given 

 point shall be at least two and one-half inches in least dimension for each 

 one foot of length. 



(c) In an E district no building located within a residence district as 

 designated on the use district map shall occupy at the curb level more than 

 50 per cent of the area of the lot, if an interior lot, or 70 per cent if a 

 corner lot, and above a level 18 feet above the curb no building shall occupy 

 more than 30 per cent of the area of the lot, if an interior lot, or 40 per 

 cent if a corner lot. In computing such percentage any part of the area 

 of any corner lot in excess of 8,000 square feet shall be considered an 

 interior lot. 



§ 16. Rear Yards, (a) Except in A districts, for lots or portions of 

 lots that are back to back there shall be rear yards extending along the rear 

 lot lines of such lots or portions of lots wherever they are more than 55 

 feet back from the nearest street. Such rear yard shall be at least of the 

 area and dimensions herein prescribed for the area district in which it is 

 located at every point along such rear lot line. Within 55 feet of the nearest 

 street no rear yards shall be required. No rear yard shall be required on 

 any corner lot nor on the portion of any lot that is back to back with a 

 corner lot. 



(b) Where a building is not within a residence district as designated 

 on the use district map, the lowest level of a rear yard shall not be above 

 the sill level of the second story windows, nor in any case more than 23 feet 

 above the curb level. Where a building is within a residence district the 

 lowest level of a rear yard shall not be above the curb level, except that not 

 more than 40 per cent of the area of the yard may be occupied by the build- 

 ing up to a level 18 feet above the curb level. In the case of a church, 

 whether within or without a residence district, such 40 per cent may be 

 occupied up to a level of 30 feet above the curb level. 



