When creating a site boundary using the Reference Angle Method, angles are measured using compass bearings and a reference angle. Each angle is measured within a given quadrant (NE, NW, SE or SW). The angle is the acute (less than 90°) angle from the North or South meridian as measured to the East or West. For example, the bearing N 90d00’00” E can be thought of as 90º east of North.
By default, the angle is specified using the degrees/minutes/seconds format, but you can choose to use decimal degrees if you prefer.
To create a site boundary with the Reference Angle Method:
Make sure the Reference Angle format is selected on the Units of Measure page in your program settings. How to
In 2D plan view, select View > Zoom and Navigate > Zoom to Fit,
or click the Zoom to Fit button on the Zoom and Navigate toolbar. This
will bring the entire terrain into view so you can insert the boundary
easily and precisely.
Select Insert
> Terrain > Site Boundary, or click the Site Boundary button
on the Terrain toolbar.
Select a point for the first peg (stake). The Commander becomes instantly active, displaying options for defining the length and direction of line segments.
Move your mouse in the general direction you want the first site boundary line to run. This determines the quadrant you are working in, and the compass points used in the bearing. Note that you can also select a quadrant (NE, NW, SE or SW) from the drop box in the Commander if you prefer — just remember to Tab over to the Distance edit box when you’re done.
Type a length for the boundary line. The value appears in the Commander’s Distance edit box.
To specify the direction of the line, either move your mouse in the desired direction (watching the resulting angle in the Commander’s Direction edit box), or press the Tab key to move to the Direction edit box, then enter the desired angle and press ENTER. Remember that the angle is measured from the North or South meridian, and should be between 0 and 90 degrees.
Continue defining the remaining segments. When you have defined all but the last segment, right-click and select Finish. A closing line segment will be created automatically between the first and last peg, forming a closed site boundary.