Table of Contents
Advertisement
38.5
Description
Diagram
COGO
Field
Option
Arc length
Display only
Easting and
Display only
Northing
Height
Display only
Next step
Page changes to the 3D viewer page.
COGO Calculation - Traverse Method
Elements that must be known are
•
the coordinates of one point.
the direction from the known point to the COGO point.
•
the distance from the known point to the COGO point.
•
•
offsets, if necessary and configured.
The coordinates of the known point
•
can be taken from the job.
can be manually measured during the COGO calculation.
•
can be entered.
•
The direction from the known point to the COGO point can be an azimuth or
an angle.
Points with full coordinate triplets and position only points can be used. Posi-
tion only is calculated, height can be typed in.
A COGO traverse calculation can be calculated for
a single point.
•
multiple points. Several single points are calculated in one sequence.
•
•
sideshots.
COGO traverse calculation with offset for a single point
P3
d3
d1
P0
GS_005
Description
Computed length of arc.
The calculated coordinates.
The height of the calculated point.
Known
P0 Known point
Direction from P0 to P1
α
d1 Distance between P0 and P1
P1
d2 Positive offset to the right
d2
d3 Negative offset to the left
P2
Unknown
P1 COGO point without offset
P2 COGO point with positive off-
set
P3 COGO point with negative off-
set
477
Advertisement
Table of Contents
