44.4.3
Inserting/Editing an Element in a Horizontal Alignment
In
Horizontal Alignment
,
Elements
page, highlight the start point, or an ele-
ment if one exists, and press
Add
or
Edit
.
☞
Elements can be added after the start point and either before or after
other elements.
Creating and editing an alignment element are similar processes. For simplicity,
only the creation of an alignment element is explained and differences are
clearly outlined.
Description of fields
Field
Option
Description
Element
type
Straight
To insert/edit a straight to/in a horizontal
alignment.
Curve
To insert/edit a curve to/in a horizontal align-
ment.
Spiral
To insert/edit a clothoid to/in a horizontal
alignment.
Cubic parab-
ola
To insert/edit a cubic parabola to/in a hori-
zontal alignment.
Bloss
To insert/edit a bloss curve to/in a horizontal
alignment.
The options available for the field
Method
depend on the
Element type
selected.
For
Element type
:
Straight
Field
Option
Description
Method
Azimuth &
length
Using the azimuth and the length of the
straight.
Azimuth &
end chain-
age
Using the azimuth and the end chainage of
the straight.
End coordi-
nates
Using the end coordinates of the straight.
For
Element type
:
Curve
Field
Option
Description
Method
Radius &
length
Using the radius of the curve and its length.
Radius &
deflection
angle
Using the radius and the delta angle of the
curve.
Radius &
end chain-
age
Using the radius of the curve and the end
chainage.
Access
☞
Add Horizontal Ele-
ment
Roads - Alignment Editor
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