☞
For a detailed description of stakeout modes, refer to "9.3 Stakeout".
Polar Stakeout mode Orthogonal to Station Stakeout mode
9.10.3 Reference Arc
RefArc is an application that allows the user to define a reference arc and then measure line and
offset of a point with respect to that arc.
The reference arc can be defined by:
•
a centre point and a start point,
•
a start point, an end point and the tangent angles.
Define arc by centre and start point
P0 Instrument station
P1 Centre point
P2 Start point
Px Target point
dL DLine
dP DOffset
Define arc by start point, end point and tan-
gent angles
19028-001
d
d
a1
a2
N
P0
P1
Px
P2
P0 Instrument station
P1 Start point
P2 End point
a1 Tangent angle of start point
a2 Tangent angle of end point
Px Target point
dL DLine
dP DOffset
Description
Application 81
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