Field
Option
Description
☞
All data is saved to the DBX in
ground format. Only ground data is
written to the report sheet.
Scale factor
Editable field
To apply an appropriate geodetic map projec-
tion to scale over the ground. The scale fac-
tor is only applied to Road, not to Rail or
Tunnel.
Calculate
chainage
along chord
Check box
When this box is not checked, the chainage
refers to the centreline of the alignment. The
app calculates the points to be staked out
from that chainage.
When this box is checked, the chainage is
calculated along chords defined for the arc.
The setting is applied to the entire align-
ment. To stake arcs along the centreline, the
check box must be unchecked.
0014588_001
a = 750 ft
b = 1080 ft
a’ = 750 ft
c = 100 ft
c = 100 ft
d = 86.48 ft
b’ = 1036.48 ft
a Start chainage on centreline
a’ Start chainage on chord
b End chainage on centreline
b’ End chainage on chord
c
Chord length
d Last chord at the end of an arc. May be
shorter than the defined chord length.
At the end of a first arc when starting a
straight, the chainage is calculated again
along the centreline until the next arc starts.
At the end of the straight when starting the
second arc, a new chord of the defined
length is started to be used as chainage ref-
erence.
At the end of an arc or for a short arc, the
chord may be shorter than the defined chord
length.
Chord
length
Editable field
Available when
Calculate chainage along
chord
is checked.
The defined chord length.
Next step
IF you work with
THEN Page changes to the
Road
Info
page.
Rail
Rail design
page.
Roads - General
635
