Irregular Boundary Adjustment

This command adjusts angle/distance courses between two control points. This adjustment applies to boundaries that are not established as straight lines and are termed "irregular". A modified form of single proportionate measurement is used by this method to restore the lost corners. To apply the geodetic lengths and angles with this adjustment, the grid projection must be set under Drawing Setup before running this command.

For input, this command takes reference coordinates for the starting and ending points either by screen pick or by point number. Then the record angles and distances between these two reference points are entered. The program reports the input data, the recalculated points and the adjusted angles and distances.

Prompts

Pick Starting point or point number: pick point
Pick Ending point or point number: pick point
Mean Bearing from Record (Qdd.mmss): 40.2200
Enter Record Distance [<Meters>/Feet/Chains]: 5314.46
Mean Bearing from Record (Qdd.mmss): 41.0220
Enter Record Distance [<Meters>/Feet/Chains]: 2846.75
Enter another record [Yes/<No>]? press Enter
Draw adjusted lines [<Yes>/No]? press Enter

Irregular Boundary Report

Retrace Point
Northing      Easting     
222637.518    477292.438  
230796.636    477202.638  

Record
Bearing       Distance    
N 00°22'00" W 5314.460    
N 01°02'20" W 2846.750    

New Point
Northing      Easting     
227950.882    477255.709  

Adjusted
Bearing       Distance    
N 00°23'46" W 5313.490    
N 01°04'06" W 2846.248

Pulldown Menu Location: COGO > Geodetic
Prerequisite: Two control points and record courses
Keyboard Command: geoirrb