81-261 - Definitions LAST AMENDED 2/2/2011 Compensating recess A portion of a #zoning lot# which, at the #building# height selected for determining compliance with the provisions of Section 81-26 (Height and Setback Regulations--Daylight Compensation), lies in the #free zone# (Zone A on the #encroachment grid#), is not covered by any portion of a #building# and qualifies as compensating for #encroachments# beyond the #free zone# under the provisions of Section 81- 264 (Encroachments and compensating recesses). (See illustration of #Compensating Recess# and #Encroachment#) COMPENSATING RECESS AND ENCROACHMENT (81-261.1) Encroachment A projection beyond the #setback line#, the #free zone# or the #half-setback line# by any portion of a #building# that exceeds the maximum height permitted at the #street line#. (See illustration of #Compensating Recess# and #Encroachment#) Encroachment grid A plan drawing of the #zoning lot# at any given height above #curb level# selected to determine compliance with the provisions of Section 81-26 and showing, for that height, #street lines#, #setback lines#, #half-setback lines#, #Zone A# (the #free zone#), #Zone B# and #Zone C# (#encroachment zones#) and, where applicable, the #ten-foot setback line#. The #encroachment grid# serves as a device for measuring areas of #encroachment# beyond the #free zone# and areas of #compensating recess# within the #free zone#. (See illustration of #Encroachment Grid#) ENCROACHMENT GRID (81-261.2) Free zone That portion of a #zoning lot#, at any given height, which may be covered by a #building# without coverage constituting an #encroachment# that requires daylight compensation. In addition to the area that lies behind a #setback line# or #setback lines#, the #free zone# shall include areas between the #setback line# and either the #half-setback line# or the #ten-foot setback line#, whichever is further from the #street line#, and which qualify as #free zone# areas under the #middle one-third rule#. The #free zone# is referred to as #Zone A# on the #encroachment grid#. FREE ZONE (81-261.3) Half-setback line A line drawn parallel to a #street line# and halfway between the #street line# and the #setback line#. (See illustration of #Setback Line# and #Half-Setback Line#) Middle one-third rule The rule under which, for the middle one-third of the #front lot line# length, the #free zone# includes area between the #setback line# and either the #half-setback line# or the #ten-foot setback line#, whichever is further from the #street line#. However, on a #corner lot# the #free zone# does not extend beyond the #setback line# along an intersecting #street#. (See illustrations of #Middle One-Third Rule#) MIDDLE ONE-THIRD RULE (81-261.4) Setback line A line drawn in plan parallel to a #street line# and showing for a given #building# height the minimum depth to which a #building# is required to be set back from the #street line# by the applicable depth to height chart in Section 81-263 (Standard setback requirements). Required setbacks, established by the chart, increase with the #building's# height. (See illustration of #Setback Line# and #Half-Setback Line#) SETBACK LINE AND HALF-SETBACK LINE (81-261.5) Street frontage zone A portion of a #zoning lot# which lies within an area bounded by a continuous #front lot line# and either the center line of the #block# or a line 100 feet distant from and parallel to that #front lot line#, whichever is closer to that #front lot line#. There shall be a #street frontage zone# for each #zoning lot# #street# frontage. (See illustration of #Street Frontage Zones#) STREET FRONTAGE ZONES (81-261.6) Ten-foot setback line A line which is parallel to the #street line# at a depth of 10 feet and represents the minimum distance any portion of a #building# exceeding the maximum height at the #street line# is required to be set back from the #street line#. A greater setback distance may be required by a #setback line# or a #half-setback line# depending upon the #building# height for which such #setback line# or #half-setback line# is established. TEN-FOOT SETBACK LINE ON AN ENCROACHMENT GRID (81-261.7) Zone A, Zone B, Zone C "Zone A," "Zone B" and "Zone C" are zones on an #encroachment grid# defined as follows: (a) #Zone A# is the #free zone#. (b) #Zone B#, an #encroachment# zone, is the zone, exclusive of any area in #Zone A# and any area closer to the #street line# than the #ten-foot setback line#, which lies between the #setback line# and either the #half-setback line# or the #ten-foot setback line#, whichever is further from the #street line#. (c) #Zone C#, an #encroachment# zone and penalty zone, is the zone, exclusive of any area closer to the #street line# than the #ten-foot setback line#, which lies between the #half-setback line# and the #ten-foot setback line#.