Tamping

   • Crib and shoulder areas must be full to ensure ballast is available for tamping
   • Tamping and lining must be carried out using tamping machines, preferably with a 16 tool switch tamper
   • MUST raise the tamping tools to compensate for the depth of steel ties versus wood ties

   • Insert tamping tools so that the top of the blade is no more than 5/8” below the base of the steel tie in its lowered position
   • Ties must be center tamped with the tamper’s traversing work heads
   • The tamping cycle should consist of two insertions at the rail seats and one in the center of the tie to ensure proper compaction

   • It is important to note that the object of center tamping the tie is to prevent the migration of ballast laterally from under the rail seats

   • Inspection holes are located on either side of the rail seats to ensure the tie pods are full
   • Do NOT over broom, leave crib rock to top of tie
   • When steel ties are interspersed with wood ties a simple rule to remember is to ALWAYS TAMP THE STEEL TIES LAST