Sign Convention; Design Profile Shift - Leica Captivate Technical Reference Manual

Design profile shift

Roads - General
Linear: The shift is linearly interpolated along the chainage or sta-
tion.
a b
Tunnel_025

Sign convention

The sign convention for design shifts is identical to the conventions used for
centreline offset and height shifts difference.
d (-) a
e (-)
Tunnel_011
A shift can be applied to the design profile. The shift is applied perpendicularly
to the design profile at any point along the design profile.
A positive shift will increase the size of the profile, a negative shift will
decrease the size of the profile.
a (-) b c (+)
Tunnel_012
c
a
b
a
b
b (+)
c (+)
c
d
e
a
b
d (-)
c
d
e (+)
e
Constant shift
Linear shift
Centreline
Positive horizontal shift
Positive vertical shift
Negative horizontal shift
Negative vertical shift
Design profile with negative
shift
Original design profile
Design profile with positive
shift
Negative shift
Positive shift
703