The slope is defined manually relative to a selected 3D centreline, slope direc-
tion and slope ratio or relative to a 2D line using a manual height, slope direc-
tion and slope ratio. Chainage information is related to the centreline.
The slope is defined manually relative to a selected 3D line, slope direction and
slope ratio or relative to a 2D line using a manual height, slope direction and
slope ratio. Chainage information is related to the selected line itself and not
the centreline of the layer.
For this method, a 3D representation of the slope, defined by two lines, is
required.
45.3.8
Measuring Road Crowns
Stake road
Check road
a
b
g
h
f
e
c
d
Road_040
a
b
g
h
f
e
c
d
Road_076
a
Position to stake out, in this
case the left line of the crown
b
Middle line of the crown, in
this case also the centreline
c
Left surface grade to stake
out
d
Right surface grade to stake
out
e
CL offset
f
Difference in offset
g
Difference in height to left
cross slope
h
Diff in ht to right surface
a Left line of the crown
b
Middle line of the crown,
common for both surface
grades
c
Left surface grade to check
d
Right surface grade to check
e
CL offset
f
Difference in offset
g
Difference in height to left
cross slope
h
Diff in ht to right surface
•
Staking road crowns allows the stake out of two surface grades at the
same time. If
Toggle offsets
is checked, the reference for
Difference in
offset
is automatically switched between the right and left surface grade
depending on whether the measured position is to the right or left of the
middle line.
•
When checking road crowns, it allows the check of two surface grades at
the same time. The information for both surface grades is shown at the
same time.
A 3D design of the road, defining a crown consisting of three lines, is required.
Description of manual
slopes
Description of local
manual slopes
Description of design
slopes
Graphical overview
Description
Required elements
Roads - Road
765
