Javad TRIUMPH-LS User Manual page 68

The "Arc by 3 points" button (
CoGo 3-Points Arc screen (Figure 17), which can be
used to calculate all arc parameters given any point
on arc (P2) and arc ending point (P3). Starting arc
point P1 is fixed and grayed out, as it is defined by
previous alignment section. After entering P2 and P3
and reviewing resulting arc parameters, tap "OK" to
modify current arc section and return back to editing
alignment (in this case, arc end coordinates are set to
"Locked"). Tap "Esc" to return to editing alignment
without modifying current section.
68
Figure 16
) switches to the The "Chord" button (
entering arc chord Direction and Length (Now, tap
"New Section" and change the new section type to
create another transition curve, now joining the arc
and a straight:). When chord controls are visible, the
exact way of their functioning is determined by "radi-
us lock" button:
•
In "unlocked"
Radius) are defined by Chord Direction, Chord
Length and Start Direction
•
In "locked"
Start Direction) are defined by Chord Direction,
chord length and Radius
Stake Out Alignments
Figure 17
) toggles additional fields for
state, arc parameters (including
state, arc parameters (including
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