means a horizontal direction expressed as a distance in angles between the direction of a fixed point and the direction of an object being measured.

means the area within the drip line or perimeter of the foliage of a tree.

means any partition, subdivision, or planned unit development that is created under the City's land division or zoning regulations.

means the Planning Director of the City or designee.

means the full height and breadth of vegetation that the Director has identified as "solar-friendly," any vegetation listed on a plat map, a document recorded with the plat, or a solar access permit as exempt.

means for purposes of the solar access regulations, a lot line abutting a street. For comer lots, the front lot line is that with the narrowest frontage. When the lot line abutting a street is curved, the front lot line is the chord or straight line connecting the ends of the curve. For a flag lot, the front lot line is the shortest lot line adjoining the pole portion of the lot, excluding the unbuildable portion of the pole (see Figure 19.1202.1-1).

means vegetation that is not exempt.

means the lot line that is the smallest angle from a line drawn eastwest and intersecting the northernmost point of the lot, excluding the pole portion of a flag lot. If the north line adjoins an undevelopable area other than a required yard area, the northern lot line shall be at the north edge of such undevelopable area. If 2 lot lines have an identical angle relative to a line drawn east-west, or if the northern lot line is less than 35 ft, then the northern lot line shall be a line 35 ft in length within the lot, parallel with and at a maximum distance from the front lot line (see Figure 19.1202.1-2).

means the length of a line beginning at the midpoint of the northern lot line and extending in a southerly direction perpendicular to the northern lot line until it reaches a property boundary (see Figure 19.1202.1-3).

means a line on a plat or map recorded with the plat that identifies the location on a lot where a point 2 ft above may not be shaded by structures or nonexempt trees (see Figure 19.1202.1-4).

means a shadow cast by the shade point of a structure or vegetation when the sun is at an altitude of 21.3 degrees and an azimuth ranging from 22.7 degrees east and west of true south.

means the part of a structure or nonexempt tree that casts the longest shadow onto the adjacent northern lot(s) when the sun is at an altitude of 21.3 degrees and an azimuth ranging from 22.7 degrees east and west of true south; except a shadow caused by a narrow object such as a mast or whip antenna, a dish antenna with a diameter of 3 ft or less, a chimney, utility pole, or wire. The height of the shade point shall be measured from the shade point to either the average elevation at the front lot line or the elevation at the midpoint of the front lot line. If the shade point is located at the north end of the ridgeline of a structure oriented within 45 degrees of a true north-south line, the shade point height computed according to the preceding sentence may be reduced by 3 ft. If a structure has a roof oriented within 45 degrees of a true east-west line with a pitch that is flatter than 5 ft (vertical) in 12 ft (horizontal), the shade point will be the eaves of the roof. If such a roof has a pitch that is 5 ft in 12 ft or steeper, the shade point will be the peak of the roof (see Figures 19.1202.1-5 and 19.1202.1-6).

means a line drawn parallel to the northern lot line that intersects the shade point (see Figure 19.1202.1-7).

means a graphic representation of an area that would be shaded by the shade point of a structure or vegetation when the sun is at an altitude of 21.3 degrees and an azimuth ranging between 22.7 degrees east and west of true south (see Figure 19.1202.1-8).

means a series of contour lines establishing the maximum permitted height for nonexempt vegetation on lots affected by a solar access permit (see Figure 19.1202.1-9).

means a document issued by the City that describes the maximum height that nonexempt vegetation is allowed to grow on lots to which a solar access permit applies.

means a device or combination of devices or elements that does or will use direct sunlight as a source of energy for such purposes as heating or cooling of a structure, heating or pumping of water, and generating electricity. Examples of a solar feature include a window that contains at least 20 sq ft of glazing oriented within 45 degrees east and west of true south, a solar greenhouse, or a solar hot water heater. A solar feature may be used for purposes in addition to collecting solar energy, including but not limited to serving as a structural member or part of a roof, wall, or window. A southfacing wall without windows and without other features that use solar energy is not a solar feature for purposes of this chapter.

means a tree which the Director has determined does not cause significant winter shade due to foliar period and branch structure. The Director shall maintain a list of generally recognized solar-friendly trees.

means a line parallel to the northern property line(s) of the lot(s) south of and adjoining a given lot, including lots separated only by a street, that intersects the solar feature on that lot (see Figure 19.1202.1-10).

means true south, or 20 degrees east of magnetic south.

means one or more photographs that plot the position of the sun between 10:30 a.m. and 1:30 p.m. on January 21st, prepared pursuant to guidelines issued by the Director. The sun chart shall show the southern skyline through a transparent grid on which is imposed solar altitude for 45 degree and 30 minute northern latitude in 10 degree increments and solar azimuth from true south in 15 degree increments.

means an area that cannot be used practicably for a habitable structure because of natural conditions, such as slopes exceeding 20% in a direction greater than 45 degrees east and west of true south, severe topographic relief, water bodies, or conditions that isolate one portion of a property from another portion so that access is not practicable to the unbuildable portion; or manmade conditions, such as existing development which isolates a portion of the site and prevents its further Development, setbacks, or development restrictions that prohibit development of a given area of a lot by law or private agreement, or existence or absence of easements or access rights that prevent development of a given area.