Following is an elementary formula for determining the number of shade trees required in and around paved parking lots in order to presumptively satisfy the shading requirements.
(1) Including parking spaces, driveways, loading areas, sidewalks, and other circulation areas and not including building area or any area which will remain completely undeveloped, calculate square footage of the vehicle accommodation area: | |
sq.ft. | |
(2) Multiply: | x .20 |
(3) Area to be shaded= | sq. ft. |
(4) Add area shaded by existing trees to be retained in and around the vehicle accommodation area:* | sq. ft. |
(5) Add area shaded by required screening trees, if any:* | |
(6) Add area shaded by required street trees, if any:* | |
(7) Subtotal = | sq. ft. |
If line (7) is greater than line (3), then the shading requirement has been met. If not, go to line (8) | |
(8) Enter the difference between line (7) and line (3) | sq. ft. |
(9) Divide line (8) | 707 sq. ft. |
(10) Total number of shade trees required within the vehicle accommodation area = | trees |
* Existing trees retained will be credited according to actual crown radius. Shaded area may be calculated as follows: 3.14 X (crown radius)2 = shaded area. | |
(Ord. passed 12-20-2001) Penalty, see § 152.999