Javad TRIUMPH-LS User Manual page 73

By default, parabolic curve has "Grade In" (starting
slope) and "Grade Out" (ending slope) identical (that
is, forming a straight line) and equal to the ending
slope of the previous section.
Note: In current implementation all slopes are defined
in percent, i.e. as Δ(vertical)/Δ(horizontal)*100%.
We need to create transition curve for 5% target
slope. So, enter "50.0" as horizontal length and "5.0" as
"Grade Out".
Note: You can also enter "End Elevation", and "Grade
Out" will be computed automatically (in our example,
set "End Elevation" to 151.25 and "Grade Out" will
be calculated as 5%). As a parabolic curve with fixed
starting slope and horizontal length has only one
degree of freedom, "End Elevation" and "Grade Out"
fields cannot be edited independently.
Now our screen looks as shown in Figure 25.
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Figure 25
Stake Out Alignments
Tap "New Section" to create straight line, note that
slope is automatically set to our desired 5%, and edit
"Hor. Length" to 35.0 (Figure 26).
The procedure has become a little bit boring, so let
us get familiar with the List screen and create another
transition parabola via copy. Tap the "List" button at
the upper right corner of the screen.
Figure 26
Figure 27
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