Perform vertical curve alignment

Click on the vertical curve computation icon   from the toolbar to calculate the vertical point of curvature (PVC,) and the vertical point of tangency (PVT,) of each vertical curve. The PVC, PVT and PVI (point of vertical intersection,) points are identified on the graph with different marker. If PVT and PVC of adjacent curves overlap, an error message will display as shown in Figure 11(a). Clear current design and redesign a new vertical curve. Computed sample vertical curve is displayed in Figure 11(b).

Tips: Clear vertical curves (edit-clear curves) before modifying PVI points. Use left mouse to click and drag the PVI point to a desired location.


Figure 11(a) Vertical curves overlap



Figure 11(b) Vertical curve design

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