STAN Routine
A variety of calculations may be carried out to define a point using the STAN Routine.
In some intersections there will be two solutions for the unknown point.
The required solution is defined by placing a previously defined point in the auxiliary point column.
The solution adopted is that closest to the auxiliary point.
Examples of STAN are shown below. Points 10, 11,100 and 111 are defined by a bearing and a distance.
Point 11 is defined by a bearing and a distance, the bearing is given as parallel to the line
through pts 1 and 10. Point 125 is defined by the intersection of two lines,
the first through pt 101 with a bearing of line 100 to 104 plus 90deg, the second
through pt 111 with the bearing of line 104 to 100.
Point 153 is defined by the intersection of a circle through 148 with radius distance
148 to 147, the line is through pt 148 with the bearing of 100 to 104 plus 90 deg.
Point 181 is a complicated case illustrating parallel offsets, these are particularly useful
when defining points from a road centreline.