Adding a Sub-Zone Contour

Contours and isovolumes can be added to sub-zone regions as well as main zone regions. This allows for easier viewing of results for congested regions where sub-zones are more applicable.

To add a contour for a sub-zone region:

1. Click the Add Item tab and select Contour from the dropdown menu.

2. Leave the Name of the contour as its automatically defined one

3. Select Fire Zone: Main Fire Zone as the Zone

4. Click the blue Add Sub-Zone text to the right of the Zone dropdown menu as shown in Figure 25.

    

   

   Tutorial 4 - Figure 25 - Selection of 'Add Sub-Zone' text to open the dropdown menu for selection of sub-zones for a contour

    

5. In the Sub-Zone dropdown menu that appears, select Sub-Zone 01

6. Ensure the On Plane option is set to the XY plane

7. Set the height of the plane to have an Offset at "0.75 meters"

8. Set the System as Zone. This sets the offset value to be from the base of the sub-zone rather than based on the global origin height of z=0

9. Leave the Coverage options as 0 to 4 

10. Click the Preview checkbox to view the contour.

     

    

    Tutorial 4 - Figure 26 - Preview of contour in Sub-Zone 01 at 0.75m height

     

     

11. Contours can be previewed in different zone or sub-zones before being added to the project. Continue by changing the Sub-Zone dropdown menu to select Sub-Zone 03

12. The preivew of the contour will automatically move to Sub-Zone 03 as in Figure 27 below

13. Select the Add Item button to add the sub-zone contour to the project. This will turn the contour slightly transparent, which can be changed in the Opacity section of its properties panel.

Tutorial 4 - Figure 27 - Horizontal contour added inside the bounds of Sub-Zone 03

Before continuing to the next section, turn off the visibility of the contour by deselecting the checkbox next to its name under the Fire Mapping-> Contours heading in the Project Items Tree.