Table 3 lists the nominal assumptions in the FEA models
for bolted rail joints. The static wheel load is based on the
maximum gross rail load for freight cars used in the modernday,
heavy-axle load environment (i.e. 286,000 lb divided by
eight wheels), or 35.75 kips. Tie spacing and tie spring stiffness
are related through an equivalent continuous foundation
modulus of 3,000 psi which is a value representative of wellmaintained
track in revenue service.