Another ATSF Admirer

Helix Construction, Marking out Plywood Supports

Crossing the vertical lines at the correct heights (triple checked!) for each loop. These horizontal lines will be the supports the sub-roadbed sits on. Each support is numbered. Each loop height is marked at the bottom of that column. Look closely, you might see the planned '[' shaped notches in the support to allow wagons to pass without side-swiping the support! Not thoroughly satisfied with this as yet.

Helix Construction, Marking out Plywood Supports
Another ATSF Admirer, May 4, 2008