Javad TRIUMPH-LS, User Manual

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Stake Out Alignments
Figure 16
The “
Arc by 3 points
” button ( ) switches to the
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.
Figure 17
The “
Chord
” button ( ) toggles additional fields for
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” state, arc parameters (including
Radius
) are defined by
Chord Direction
,
Chord
Length and Start Direction
•
In “locked” state, arc parameters (including
Start Direction
) are defined by
Chord Direction
,
chord length and Radius