Pile O' Ties (Treated or Untreated) Piles of ties, made of lasercut wood, pre-assembled and ready to place on your layout. Random pattern ties so each stack is unique. Untreated ties for use in railroad yards, tie yards, sawmills, lumber yards, construction sites and as railroad car loads or truck loads. Treated ties for use along your right of way, in railroad yards, tie yards or as railroad car loads or truck loads.