I've searched threads on expansion joints and they all seem to have one thing in common: flex track. The rail can slid in the plastic spikes holding it to the rail. My question is what about a length of handlaid track using soldered PC ties. Once the ties are glued down & ballasted, it would seem the rail can't move without breaking something. I'm laying soldered track on 1/2" plywood & 1/2" homasote. Specifically, a line of turnouts several feet long. Is there anything special I should do in this case or do the normal expansion joints several feet apart work?