Step 1: The actual part that
shall be modelled, is rotated so it fits the layout space.

The original map found on TopoZone
Step 2: The map is
compressed and warped on the left part and the tunnel after
Walong is rotated a little. It results in a shorter layout and fits the space available
for the layout. Because of the warping of the original map,
the contour lines is also warpet, so the countur lines
can be used to construct the terrain and that it will
look similar in the model, as in the original world.
Hopefully you can still have the feeling of Tehachapi
Loop when you look at the plans, and later at the
layout.

The compressed and warped map
Step 3: The layout is
constructed in 3rd Plan It. The scale is not correct, because
of the limited space to be used on the layout.
The track design and the contour lines is taken from the
original map, to create the layout as accurate as possible,
compared to the real world.

Layout on top of the compressed and warped map

Layout on top of the compressed and warped map
Step 4: The contour lines
for the terrain is constructed from the map. The cut and fill
is constructed by looking at photos, to try to get an overall
feeling that this layout is Tehachapi Loop.

The Tehachapi Layout in Z-scale
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