1 MARCH 2000
Figure 6-21. Tie Plates
(2) Either single or double shoulder tie plates can be used.
(3) Within a given length of track, tie plates of different lengths and widths may be used, and single
shoulder plates may be mixed with double shoulder plates. However, plates with different cants (i.e.,
those with level rail seats and those with a 1:40 slope) will not be mixed. Tie plates with a 1:40 cant are
(4) Secondhand plates that are not bent, have not lost much material due to corrosion, and otherwise
meet the above requirements, are acceptable.
c. Spikes. On tangent track and on curves up to 4 degrees, one spike on the gage and field side of
each rail will be used (a total of four spikes in each tie). On curves greater than 4 degrees, one spike on
the field side and two spikes on the gage side of each rail will be used (a total of six spikes in each tie).
d. Rail Joints and Joint Bars.
(1) Either four-hole (24-in.) or six-hole (36-in.) joint bars may be used for rail joints.