HomeMy WebLinkAboutAverage_Natural_Grade_Worksheet_Mon_Nov_20_2023_13-51-52Average Natural Grade Worksheet - Lexington
AVERAGE NATURAL GRADE (ANG) The average of the elevations of the proposed new
building in its proposed location, prior to any disturbance on the site, certified by a registered
land surveyor. ANG natural grade is a minimum of the four extreme corners of the building or,
in the case of a most nonrectangular buildings, of such equivalent locations as the Building
Commissioner may determine.
In a case where the finished grade is lower than the natural grade, the finished grade shall
be the lower elevation used in the ANG Calculation.
Every plan is different, each plan may require a different number of points to properly calculate
the Average Natural Grade. This worksheet is to be used by the Land Surveyor to determine the
ANG, with the following directions:
1. Add the 4 extreme corners of the proposed building to the calculation worksheet.
2. Where the elevation changes between those 4 extremes, there shall be a point added to
the calculation. For example, if any retaining walls interrupt the grade, a point shall be
added at the top and bottom of said wall.
3. For garages under, the elevation used in the worksheet is the garage floor elevation.
4. ANG calculations do not need to include drops for window wells.
Use this table to calculate your Average Natural Grade.
Spot Elevation Location Existing Elevation Proposed Elevation Lower of the Two
Spot Elevation 1
Spot Elevation 2
Spot Elevation 3
Spot Elevation 4
Spot Elevation 5
Spot Elevation 6
Spot Elevation 7
Spot Elevation 8
Spot Elevation 9
Spot Elevation 10
Spot Elevation 11
Spot Elevation 12
DATE:______________________ Total
SURVEYOR’S SIGNATURE:
Average Natural
Grade