Field
Option
Description
End north-
ing
Editable field
Northing for the end chainage. Available for
Method:Radius & end coordinates
,
Method:Centre point & end coords
and
Method:3 points
.
For
Element type
:
Spiral
Field
Option
Description
Start azi-
muth
Editable field
The azimuth of the tangent in the start
point. This azimuth is used from the previous
element. The value can be edited.
Spiral direc-
tion
Right
or
Left
The direction of the clothoid looking in the
direction of increasing chainage.
Spiral in/out Spiral in
For transition from tangent to curve.
Spiral out
For transition from curve to tangent.
Radius
Editable field
Radius of the clothoid. Available for
Method:Radius & length
,
Method:Radius
& end chainage
and
Method:Radius &
parameter
.
Parameter A
Editable field
The parameter A defining the clothoid. Avail-
able for
Method:Parameter & end chain-
age
,
Method:Parameter & length
and
Method:Radius & parameter
.
Length
Editable field
Length of the clothoid element. Available for
Method:Parameter & length
and
Method:Radius & length
.
Start radius
Editable field
The entry radius of the spiral. The signs are
set by the system depending on the spiral
direction defined in
Spiral direction
. Availa-
ble for
Method:Radius & length
and
Method:Radius & end chainage
when
Use
partial spiral
is checked.
End radius
Editable field
The exit radius of the spiral. The signs are set
by the system depending on the spiral direc-
tion defined in
Spiral direction
. Available
for
Method:Radius & length
and
Method:Radius & end chainage
when
Use
partial spiral
is checked.
End chain-
age
Editable field
The end chainage of the clothoid can be
typed in. Available for
Method:Radius &
end chainage
and
Method:Parameter &
end chainage
.
Use partial
spiral
Check box
To create a partial clothoid. Available for
Method:Radius & length
and
Method:Radius & end chainage
.
Roads - Alignment Editor
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