The layout is called 'factory' as it is meant to represent a twin track test loop. The model is on a single sheet 0f 2' x 4' (600mm x 1200mm) plywood with hardboard forming the track grooves. Each loop can run independently of the other and there is a track cross over.
It was created to determine the effectiveness and problems in the creation of very tight curves using standard flexi-track.
One long side will eventually represent the factory with the two sides as walls enclosing the test track. Much of the track will be filled in to track level and an overhead supply system fitted.
This layout has been scrapped. My attempts to create a tram like track bed with air drying clay failed. I believe this method is used on some layouts but my efforts needed more modifications than were worthwhile.