These options are available from the Road menu, in Centreline Extras.

Centreline Extras Menu

Level To Surface

This allows you to set the vertical alignment of a centreline to match the current survey surface.

As shown in the menu you can access this command in a plan view by using the shortcut Shift+L.

After picking this option, select a centreline from the plan view. You should see the following message:

Warning that vertical alignment will be lost

This message is bringing to your attention that the Level To Surface command will change the vertical alignment of the selected centreline, which will remove any previous alignment.

Click Ok to continue and level the centreline to the survey surface.

If you click Cancel the operation will be cancelled and the alignment of the centreline will remain unchanged.

Level To Plane

This allows you to set the vertical alignment of a centreline such that it sits on a plane that you specify.

After picking this option, select a centreline from the plan view.

Picking the points that form the plane

The mouse will change to a crosshair selection cursor for you to select three locations in the plan view. These three points will form a triangle which will be be the basis of the planar surface you are aligning to, based on the Z level of the points.

After selecting three points you should see the following message:

Warning that vertical alignment will be lost

This message is bringing to your attention that the Level To Plane command will change the vertical alignment of the selected centreline, which will remove any previous alignment.

You should then see the following window allowing you to fine tune the points which define the plane you will level the centreline to:

Specifying the points and gradient of the plane

You can tweak the points which define the plane using the vertical bars or fine tune them by manually entering the levels/offsets from the ground surface.

The arrow at the centre of the triangle shows the gradient of the plane.

The Lock All Three option allows you to lock the relative levels of the points that define the plane. This means that while this option is on, any changes to the levels will update the other points to maintain the gradient of the plane. Changing the gradient will not be affected by this option.

A Manual Gradient can be specified which will scale the gradient whilst keeping the existing gradient direction.

Click Ok to level the centreline to the specified plane.

If you click Cancel the operation will be cancelled and the alignment of the centreline will remain unchanged.

Set Start Chainage

This option allows you to modify the chainage that the centreline starts at.

The chainage along the centreline will be recalculated from the new centreline start chainage.

Set Start Chainage Window

You can input the new centreline start chainage here.

Click Ok to apply the new centreline start chainage.


See Also: