
159
24. ROUTE SURVEYING
5.
Enter the curve direction, parameter A
(clothoid parameter), KE-KA curve
length (length of curve from KE to KA),
KE follow-up distance, and target point
follow-up distance.
6.
Press [OK] in the screen shown in
step 5 to calculate the center peg
coordinates. The coordinates are then
displayed in this screen.
7.
Press {ESC} three times to finish
spiral calculation and return to
<Road>.
• KE-KA curve length (length of curve from KE to KA)/KE follow-up distance/
target point follow-up distance input range: 0.000 to 99999.999 (m))
S p i r a l / C L p e g
K A -
K E
l e n g t h
4 1 . 6 6 7 m
D i r e c t .
P a r a A
5 0 . 0 0 0
m
R i g h t
OK
K E S t a . . i n g
S e t O u t p t . s t a
1 5 3 . 7 1 8
m
1 6 0 . 0 0 0 m
OK
N
E
1 6 4 . 8 3 7
S p i r a l / C L p e g
2 3 1 . 0 0 4
Azmth
1 2 5 3 2 ’ 4 8 "
WIDTH
CENTER
REC
S-O