Leica Geosystems RoadRunner, Technical Reference Manual, Page: 256 / 342

256 RoadRunner Understanding Stake and Check Basics
X-slopes X-Slopes are defined by two stringlines. The two stringlines define the right and left edge of
the X-slope. One of the two stringlines is used as the reference line.
Slopes Slopes, like X-slopes, are defined by two stringlines. Different to X-slope only one edge of
the slope, the hinge point, is known. The second edge, catch point or daylight point, is
defined by the intersection of the slope and the natural surface. As the natural surface is
unknown this edge can only be staked out in the field. To find and stake out the catch point
is the most important task if working with slopes.
a) Stringline to stake out or check, in this case the centre line
b) Stringline offset
Strgl Offset
c) Stringline height difference Strgl Ht Diff
a
c
b
RR12_003
a) X-slope to stake out or check
b) Reference line
c) Horizontal offset to reference line
Ref Offset
d) Height difference to reference line Ref Ht Diff
e) Height difference to expanded X-slope X-Slp Ht Diff
a
d
b
c
RR12_004
e