For
Element type
:
Cubic parabola
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 cubic parabola looking in
the direction of increasing chainage.
Spiral in/out Spiral in
For a transition from tangent to curve.
Spiral out
For a transition from curve to tangent.
Radius
Editable field
Radius of the cubic parabola.
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 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
when
Use partial spiral
is checked.
Length
Editable field
Length of the cubic parabola element. Availa-
ble for
Method:Radius & length
.
End chain-
age
Editable field
The end chainage of the cubic parabola ele-
ment can be typed in. Available for
Method:Radius & end chainage
.
Use partial
spiral
Check box
To create partial cubic parabolas.
For
Element type
:
Bloss
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 bloss looking in the
direction of increasing chainage.
Spiral in/out Spiral in
For a transition from tangent to curve.
Spiral out
For a transition from curve to tangent.
Radius
Editable field
Radius of the bloss.
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 & end
coords
.
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 & end
coords
.
718
Roads - Alignment Editor