Topcon Motorgrader - Page 137

Road Widening and Shoulders
P/N 7010-0344
5-45
Using Sonic Tracker and cross slope, dial in the desired depth and
slope.
Figure 5-72.
If the barrier wall is placed so close to the edge at the road that the
existing surface can not be tracked, set up a Sonic Stringline.
Figure 5-73.
2.0% SLOPE
2.0%
CONTROL MODE
G A INT R IM/ + / — /S E TM E NU
-1.00
F
T
BARRIER
EXISTING
SURFACE
SONIC
STRING