Setting-Out Arc - Sokkia im-101 Operator's Manual

17.2 Setting-out Arc

Setting-out arc measurement can be used to find the coordinates of required points along the arc by inputting
the arc (or chord) length and offset based on the arc.
• Before performing setting-out arc, the arc must be defined.
PROCEDURE
1. Select "Set-out arc" in <Set-out arc>.
2. Set the following items.
(1) Incr: Increment by which values can be decreased/
increased using the arrow softkeys.
(2) Arc: Distance along the defined arc from the From
point to the required point.
(2)'Chord: Distance along the chord of the defined arc from
the From point to the required point.
(3) Offset: Distance from the required point to the position
on a curve parallel to the original defined arc. A
positive value indicates an offset arc to the right,
and a negative value indicates an arc to the left.
• Press [CHORD] to switch to Chord input.
• []/[]: Press to decrease/increase the value by the
amount set in "Incr".
3. Press [OK] on the screen of step 2. The coordinate value of
the required point is calculated and displayed.
• [REC]: records the coordinate value as a known point data.
 Recording method: "30.1 Registering/Deleting Known
Point Data"
• Press [S-O] to move to setting-out measurement of the
required point.
"15. SETTING-OUT MEASUREMENT"
4. Press {ESC}. Continue the measurement (repeat steps
from 2).
Chord
77
Offset
Arc
S e t - o u t a r c
S t n . O r i e n .
D e f i n e a r c
S e t - o u t a r c
S e t - o u t a r c
I n c r :
A r c
O f f s e t :
CHORD
S e t - o u t a r c
I n c r :
:
C h o r d
O f f s e t :
ARC
S e t - o u t a r c
N
E
Z
REC
17. SETTING-OUT ARC
1 . 0 0 0 m
5 . 0 0 0 m
P 1
OK
1 . 0 0 0 m
0 . 0 0 0 m
0 . 0 0 0 m
P1
OK
1 1 8 . 8 7 4
1 0 6 . 8 9 4
1 2 . 5 4 6
S-O