Sokkia iM-50 Series Operator's Manual page 134

7. Press {ESC} three times to finish Parabola 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 [CENTER].
 "15. SETTING-OUT MEASUREMENT"

• Curve direction: right/left
• Parameter X/Radius input range: 0.000 to 9999.999 (m)
• Station offset/Stationing chainage input range:0.000 to 99999.999 (m)
PROCEDURE Calculation using ECC Point as reference
1. In the second page of the OBS mode screen, press
[MENU], then select "Road".
2. Select "Parabola" to enter the Parabola menu then select
"ECCETC Calc."
3. Input the coordinates of the ECC point (reference point).
Press [OK] to set the input values.
4. Input the azimuth angle of the arbitrary point on the line
tangential to the KE point, then press [OK].
• Pressing [COORD] sets the coordinate toward the
tangential direction. Pressing [AZMTH] on the second
page returns to the screen for inputting the azimuth angle.
5. Enter the curve direction, parameter X, ECC-ETC curve
length, ECC stationing chainage and Q stationing chainage
(Set out pt sta).
Parabola
BTC
ECC
Parabola/ECC PT
Np : 475073.398
Ep :
LOAD
Parabola/2nd tan pt
Azmth
COORD
Parabola/CL peg
Direction.
Para X
ECC-ETC Length
ECC Sta..ing
Set out pt sta
129
25. ROUTE SURVEYING
BCC Calc.
ETC Calc.
203897.770
REC OK
20.0000
OK
Right
133.000m
140.000 m
OK
0.000 m
20.000 m
OK