Create a non-tangential curve using the chord azimuth.
 Survey Command Window.
Survey Command Window. XC ZD BULB [radius] [chord azimuth] [chord distance]
XC ZD BULB [radius] [chord azimuth] [chord distance]
| Parameter | Definition | 
|---|---|
| BULB | Creates a curve that is greater than 180°. | 
| radius | The distance from a center point to the curve. Enter this value in the current survey database distance units. Use a negative radius to draw the curve in a counter-clockwise (left) direction. | 
| chord bearing | The desired bearing. Enter this value in the current survey database angular units, either DMS, grads, decimal degrees, mils, or radians. | 
| chord distance | The distance from the current vertex in the figure. Enter this value in the current survey database distance units. |