[14Steve14]

I once built a layout with a long raised track bed. Once the track was at the desired height, which was about 3 inches above the baseboard top, i just used a length of 3" wide timber to support the plywood track bed. The ranp section was achieved by cutting the baseboard either side of the desired track position for about 4ft then lifting it to the desired height. As the baseboard was again made from ply it only got supported once there was room under the raised section.