This option displays sets of cross-sections at regular intervals along a selected road.

On the Road Tools button road tools toolbar, click the Road cross-sections button road cross-sections button.

An options window is shown for the cross-sections:

Cross-sections options window

Enable Cross Section

By default this checkbox is ticked, specifying that you are adding a new set of cross sections for the selected centreline. If you un-tick this box and click OK then it will instead remove any previously existing set of cross sections for the selected centreline.


Select the chainage interval at which you want each cross-section drawing to be generated.

Left/Right Length

This is the offset either side of the centreline over which each cross-section will extend. Normally, you will want the Left/Right Length to be at least the width from the centre of the road to the back of the footpath.

By default the left and right offsets are the same. If you want to specify one different to the other then deselect the "Right same as Left" checkbox.

Show Chainages On Plan

This option will toggle whether the cross sections have their chainage value annotated in the plan view.

Start/End Chainage

By default the first cross-section is taken across the start of the road (and the next one is at the specified interval along the road). However, you can specify the start chainage for the first cross-section so that it is not at the beginning of the road.

For example, if you specify the start chainage as 10m and the interval as 25m, then the first cross-section is generated at 10m along the road, the second at 35m, the third at 60m, and so on.

In order to specify a custom Start/End Chainage you will need to deselect the "Use Entire Centreline Chainage" checkbox.

Cross-sections View

Click the OK button to see the Cross-sections View window, showing the fully annotated cross-section drawings.

Cross-section View

Below is an example of a single cross-section:

Single Cross-section Example

Cross-sections View Properties

To configure the display of the cross-sections right-click the mouse to display a menu and select Properties.

Cross-section view right-click menu

The Cross-sections Properties window is shown:

Cross-section properties window

Row Height

This specifies the height of the annotation boxes.

Text Height

By default the text height is determined by the row height and the Auto box will be ticked. If you untick the auto box you can manually specify the text height.

Vertical Exaggeration

Vertical Exaggeration allows you to set the scaling of the longsection along the vertical axis.

Datum Offset

The datum of each section is automatically selected by Site3D according to the level range of the section drawing. The datum offset is then added below each automatic datum to provide additional spacing in the drawing.

Same Datum For All Sections

If enabled the cross sections will all use the same datum, which is taken from the cross section with the lowest datum. This aligns the cross sections y axes, making it easy to compare level information across the different sections.

Regular Grid

When regular grid is enabled, the cross sections will be positioned on a regular grid, having the same horizontal and vertical spacing between cross sections. # Rows specifies how many cross sections can be stacked vertically before being drawn in the next column.

Layout Height

When Regular Grid is disabled, the height of each cross section will vary depending on the number of annotation boxes and the level range of each section. Instead of having a set number of cross sections stacked vertically, the cross sections will stack as many as will fit within the specified layout height.

When Automatic layout height is enabled, the layout height will be selected based on the smallest sheet of standard sized paper that will fit all of the cross sections. A0 paper is the maximum automatic layout height that will be selected.

Display Items

From this list you can toggle which section items are drawn. The drawing will be updated and show any changes immediately.

Vertical Reference Lines

You can select which surfaces will have vertical references lines applied at the points where there is a change in the surface.

See Also: