John and I were planning on going up to Sussex today to get some more detail photos (at the time of the last trip we weren't planning on doing the whole viaduct) but in view of the weather we decided to postpone and get some other planning issues out of the way.

One of these was to confirm the distribution of the board sections making up the viaduct and its approaches, and on laying the trackbed laser-cut sections out we decided finally on:

Approach section with 4 arches (1.4m)

10-arch section (1.4m)

9-arch section (1.26m)

10-arch section (1.4m)

Approach section with 4 arches (1.4m)

So the configuration is basically symmetrical with four of the boards of the same length and the centre board shorter by the amount of one arch.

We then annotated all the track bed boards for cutting, including the scheme for overlapping (the 3mm boards have to be laminated together to make a 6mm track bed).

Having done this, we could now start to think about the vertical design of the boards, which will probably 'step down' progressively from each end to the centre as the topography falls.

Meanwhile, drawings are well advanced for production of etches for the curved brickwork sections for the main arches and pier apertures.

As for the field trip - maybe we'll do that in the Spring when the weather is better and the days longer, and probably make it an overnighter to avoid 8 hours of driving all in a single day. Stopping over in the vicinity of the Eridge layout on club night is a distinct possibility!