Ok folks its taken a little time to get here, but we finally have the detection blocks and signal placement done.
A very special thanks needs to go out to Brendon Dennis who has guided & educated me through the finer points of detection and signal placement.
We both spent about 2 1/2 hours the other night physically marking out the detection blocks and signal mast/dwarf placement.
Here is the detection block & signal mast dwarf plan:
The naming conventions on the plan are area representative as I've only really named one location "South Bend Curve" (SB).
When looking at the plan the triangles are the isolators, these are placed on the inner most rail (nearest to the fascia) and are classed as common rail wiring.
As can be seen in the photo below the inner most rail is marked with a yellow dot, this will have an insulated rail joiner placed at this point and separate the two detection blocks. You can see the naming convention as well.
The arrow with the dot, dot, M is our symbol convention for a double head signal mast, controlling to the left (east) of this detection block boundary. The T7-3 represents Tortoise (switch machine) Number seven (7), on SE8C board number three (3).
Next stage is to add all the insulators and then the tedious task of re-wiring the layout for the common rail detection will begin.