Intersection Angle/Azimuth Angle Calculation - Sokkia iM-50 Series Operator's Manual

9. In the screens for the KA1 point, KE1 point, KE2 point, and
KA point that have been found, press [CENTER] to move to
centerline peg settings.
Input Sta..ing (stationing to the CL peg) and press [OK] to
calculate the coordinates of the arbitrary centerline peg. The
results are then displayed on the screen.
10.Press {ESC} repeatedly to finish 3 Point calculation and
return to <Road>.
• Press [WIDTH] to move to the width peg setting screen.
 "25.2 Straight Line Calculation"
• The centerline peg can be set-out by pressing [S-O].
 "15. SETTING-OUT MEASUREMENT"

• In the case of a clothoid with no transition curve, the KA1 Point, KE1 Point, and KA2 Point can be found in
step 8.
• In the case of a circular curve, the BCC Point and ECC Point can be found in step 8.

25.7 Intersection Angle/Azimuth Angle Calculation

The coordinates of a cardinal point, an arbitrary centerline peg, and width pegs can be found from an
intersection angle, curve properties, and either the coordinates of 1 IP point of intersection or the azimuth angle
from the BP Point to the IP point.
It is then possible to proceed with the setting-out of the cardinal point, centerline peg, and width pegs
AZ
P2
DIST1
KE1
R
KA1
A1
Follow-up distance
P1
Offset
PROCEDURE
1. In the second page of the OBS mode screen, press
[MENU], then select "Road".
BP point (P1)
IP intersection point (P2)
IA
Intersection angle (IA)
BP to IP distance (DIST1)
IP to EP distance (DIST2)
DIST2
KE2
Clothoid parameter A1
A2
Clothoid parameter A2
KA2
Curve radius R
P3
3 P T C u r v e / C L p e g
S t a . . i n g
3 P T C u r v e / C L p e g
N
E
S t a . . i n g
WIDTH
132
25. ROUTE SURVEYING
1 9 5 . 3 8 6 m
O K
1 6 7 . 2 8 9
1 3 7 . 5 1 7
1 0 0 . 0 0 0 m
REC S-O
CENTER