Sokkia im-101 Operator's Manual page 130

5. Enter the curve direction, parameter A, offset, and follow-up
distance.
6. Press [OK] in the screen shown in step 5 to calculate the
center peg coordinates. The coordinates and azimuth are
then displayed in this screen.
7. Press {ESC} three times to finish spiral calculation and
return to <Road>.
• Press [WIDTH] to move to the width peg setting screen.
 "25.2 Straight Line Calculation"
• The center peg can be set-out by pressing [S-O]
 "15. SETTING-OUT MEASUREMENT"

• Curve direction: right/left
• Parameter A input range: 0.000 to 9999.999 (m)
• Station offset /Stationing chainage input range:0.000 to 99999.999 (m)
PROCEDURE Calculation using arbitrary point between KA1 and KE1 as reference
1. In the second page of the OBS mode screen, press
[MENU], then select "Road".
2. Select "Spiral" to enter the spiral menu then select "KA-KE
2".
3. Input the coordinates of the P point (reference point). Press
[OK] to set the input values.
4. Input the coordinates of the arbitrary point on the line
tangential to the P point, then press [OK].
• The azimuth angle to the P point can be set by pressing
[AZMTH] on the second page. Press [COORD] to return to
coordinate input.
S p i r a l / C L p e g
D i r e c t .
P a r a A
S t . o f s
S t a . . i n g
S p i r a l / C L p e g
N
E
Az mth
WIDTH
S p i r a l
K A - K E 1
K A - K E 2
K E - K A
S p i r a l / R e f . P T P
N p :
E p :
LOAD
124
25. ROUTE SURVEYING
R i g h t
8 0 . 0 0 0 m
0 . 0 0 0 m
2 5 . 0 0 0 m
OK
1 2 0 . 8 5 9
1 1 3 . 7 5 5
0 0 0 0 ' 0 0 "
REC S-O CENTER
1 0 0 . 0 0 0
1 0 0 . 0 0 0
REC O K