177
25. 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))
Spiral/CL peg
KA-
KE
length
41.667m
Direct.
Para A
50.000m
Right
OK
KE Sta..ing
SetOutpt. sta
153.718m
160.000m
OK
N
E
164.837
Spiral/CL peg
231.004
Azmth
125 32’ 48"
WIDTH
CENTER
REC S-O
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