Triangle Along Vertical

Relimit a Line Against a Triangulation

The Triangle Along Vertical option allows a line to be relimited to in a nominated perpendicular distance of a loaded triangulation model.

An example where this option may be used is when you want to drive a tunnel, say upwards to in a specified distance of a water retaining surface, or drive a tunnel downwards until it reaches a seam of interest.

A line can be relimited against a triangulation model that has been displayed (using the Load option in the Triangle Utility menu under Model or the List Triangulations button on the Open toolbar) in two ways:

Vertical
The distance between the end of the line and the model is perpendicular from the triangulation. (This option)
Gradient
The distance between the end of the line and the model is along an extrapolated version of the line. (The Triangle Along Grade option)

The difference between the two is shown in the following diagram.

Figure 1- Vertical vs Gradient

The Triangle Along Vertical option can also be accessed by selecting the Relimit Vertical button from the Relimit toolbar.

Instructions

Select Design menu
Select Relimit submenu
Select Triangle Along Vertical option

Select the line you want to change in length. The line and one of the end points are highlighted (this is the end of the line that will be relimited). You are asked whether this point or the other point is the correct one.

The following panel displays.

Enter in real world units, the perpendicular distance from the model to the end of the line. The distance is measured in respect to the positive Z axis. A negative distance causes the line to be relimited above the model, a positive distance causes the line to be relimited below the model.

Select OK.

The required change in length is applied. If there is more than one triangulation model loaded, then you will first be asked to select the model against which the line is to be relimited before it will be applied.

Once applied, you are asked whether or not you want to keep the change. Upon confirmation you will be prompted to select another line to relimit.