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Slope staking using
Ref point surface
754
Description
When staking out slopes using the reference point surface method, the refer-
ence peg is staked out with a defined height difference to the hinge point.
b
c
f
Road_096
Workflow
1
c
e
b
d
a
Road_097
☞
The first step when staking out is to find the catch point of the
slope. As the natural surface is unknown, the process is iterative. As
soon as the measured position (e) is close enough to the real catch
point (c), it can be used as the approximate catch point. Based on
this approximate catch point, the projected catch point (d) on the
slope is calculated.
The projected catch point (d) is then used as a starting point for the
stakeout of the surface reference peg (g).
1.
Stake out the position of the catch point by using Difference in
offset and/or Difference in height on the Stake/Check panel.
When Difference in offset and Difference in height are equal to
zero, the catch point has been located.
2.
Define the hinge height difference.
Fn Tools to access the Tools panel.
3.
Select Place surface reference peg to access the define panel for
the reference peg field. The measured position from step 1. is used
as the catch point for the stake out of the reference point.
The Actual hinge height diff field displays the Hinge ht diff value
from the Stake/Check panel.
Type in the appropriate value for Defined hinge ht diff.
4.
Stake out the surface reference point relative to the projected catch
point. Values in Stake Slope Ref Pt Surface guide you to the posi-
tion to place the peg. The defined hinge height difference (h) is
already taken into account.
Values to be marked on the reference peg can be found on Stake
Slope Ref Pt Surface, Info page.
a
a
b
d
c
d
e
e
f
a
2
b
g
c
c
d
h
e
f
f
g
h
Slope to stake out
Natural surface
Catch point of the slope
Reference peg
Defined hinge height differ-
ence
Hinge point
Slope to stake out
Natural surface
Real catch point
Projected catch point
Approximate staked out catch
point after three iterations
Hinge point
Reference peg
Defined hinge height differ-
ence
Roads - Road
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