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Extension > Garden > SULIS > Design > The Base Plan > Plot Plans > Key to a Typical Plot Plan

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Key to a Typical Plot Plan

Plot Plan A "Plot Plan" is an engineer's scale drawing of the lot showing the placement of the proposed house. The following descriptions refer to the plot plan above.

ID Number Description
A These numbers represent the existing elevation, before the house is built (in feet above sea level). They show which points are higher or lower than others.
B These numbers represent the proposed elevations, after the house is built. The developer may change elevations during construction to create a smoother yard or to prevent erosion problems, or to accommodate the design of the house.
C These lines show where easements for utilities or drainage are located.
D Arrows like this show the direction water will move following heavy rains or during spring snow melt.
E A double line indicates the edge of the adjoining roadways.
F Dashed lines show the setback distances established by local authorities or the developer. The house and other structures must be at least this far from the property lines.
G These large numbers indicate the distance from point to point, or from corner to corner. In this case, the southeast lot line is 80.78 feet long.
H These smaller numbers give other distances, such as the dimensions of the house or distances between the house and the lot line.
I These numbers are surveyors notations that tell which way the lot line runs. In this case, it is read "North 40 degrees, 33 minutes, 57 seconds East." It means that starting at the southern corner of this lot, the southeast lot line runs in a direction 40 degrees, 33 minutes and 57 seconds east of a line drawn due north from the southern lot corner.
J This "R" number gives the radius of the curve in the adjoining road, and is used to determine the exact lot line and roadway. It means a circle with a diameter of 213.73 feet would give a curve with the correct arc to form this lot line.
K This triangle is another surveyor's notation which indicates the direction the curved lot line will go. It is similar to that of straight lot lines, as described under letter "H" above.
L This is the lot number within the subdivision or development. When property is initially divided, the surveyor prepares a "metes and bounds" legal description. For this lot, it would read something like "Beginning at a surveyor's monument being the south corner of the property, thence North 40 degrees, 33 minutes, 57 seconds East a distance of 80.87 feet, thence North 65 degrees, 23 minutes, 53 seconds West, a distance of 128.15 feet, thence . . . ." To make things simpler, the developer files legal descriptions of each lot with the proper authorities, and gives each lot a number. From that point on, the property's legal description would be "Lot 17, Block __ of the Plat of ________, County of ________, State of ________."

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