Dave, the railroad will be 7' X 16', topped overall and no foam, etc. Lionel tubular
in Johnson rubber roadbed. I won't need to walk on it. We've been in the house for
16 months and so far, any wood furniture down there is fine (doors & drawers operate
properly). I have a dehumidifier that I run during summer and it seems to need only a
few hours a week, if that.
Hoppy