Leica Captivate - Diagram - Single Track Elements; Rail - Check Elements and Stakeout Elements

a Chainage centreline
b Le
ft track centreline
c Left track left rail
d Left track right rail
e Left track left rail superelevation
f Left track right rail superelevation
g Right track centreline
h Right track left rail
i Right track right rail
j Right track left rail superelevation
k Right track right rail superelevation
For multiple tracks, the chainage centreline is used only to calculate the chain-
age. The sup
erelevation of each track is calculated with respect to the corre-
sponding (left / right) vertical alignment. The chainage centreline can consist of
a plan and a vertical component. Although the vertical component of the
chainage centreline is not used for any calculation.
43.6.11 Rail - Check Elements and Stakeout Elements
Points can be staked with respect to three basic elements of the track:
•
Tr
ack centreline
•
Left rail
•
Right rail
Description
The line t
o stake out can be a track centreline or, in the case of multiple tracks,
the left or right track centreline. In both cases, a horizontal offset with respect
to the centreline can be applied. Additionally, if a vertical alignment is available
for a track centreline, a vertical offset can be applied.
Diagram - Single track elements
a
Rail_006
a
b
c
d
e
f
a Track centreline
b Le
ft rail
c Right rail
d Point to stake
e Horizontal offset from track centreline
f Vertical offset from track centreline
Calculations
Description
Centreline stakeout
Roads - General 697