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a
Left surface grade of road crown
b
Right surface grade of road crown
c
Centreline
d
CL offset
e
CL height diff
f
Left most line of the crown Left name
g
Middle line of the crown Mid name
h
Right most line of the crown Right name
i
Left surface grade ht diff
j
Right surface grade ht diff
k
Left offset
l
Left height diff
m
Mid offset
n
Mid height diff
o
Right offset
p
Right height diff
q
L surf. grade ratio
r
Right surface grade ratio
s
Left width
t
Right width
The following parameters are available. All fields are display only.
Field
Crown task
Additional
line
Additional
line chain-
age
Additional
line offset
Additional
line ht diff
Difference
in offset
Difference
in height to
left cross
slope
Diff in ht to
right sur-
face
Difference
in chainage
664
Description
Name defined for the road crown task.
The name of an extra line.
Current local chainage of extra line.
Current perpendicular offset to the additional line including
the defined stake/check offset of extra line of the
Current height difference to the additional line including the
defined stake/check height difference of the additional line
of
page.
Horizontal offset to the line of the crown defined as the ref-
erence line.
If working in the toggle offset left/right mode, the correct
line is automatically selected as the reference. The measured
point can be to the left or right of the middle line. Refer to
"45.3.8 Measuring Road Crowns" for more information on
the toggle offset left/right mode.
Vertical offset to the left/right surface grade defining the
road crown.
Vertical offset to the left/right surface grade defining the
road crown.
Difference between the defined chainage and the current
chainage.
page.
Roads - General
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