TM 5-628/AFR 91-44
TIE PLATES, RAIL FASTENINGS, AND OTHER TRACK MATERIALS
otherwise defective shall be replaced with the
proper size and type material.
a. Tie plates, rail fastenings, and other track
materials shall be the proper size and type as spec-
6-2. Tie plates.
ified in TM 5-850-2/AFM 88-7, Chap. 2 and TM 5-
a. Use. Tie plates distribute the applied loads
627/AFM 91--33 and shall conform to the require-
ments of chapters 4 and 5 of the AREA Manual
from the rail to the tie as well as assist in keeping
For Railway Engineering.
the rail in position. Their use is especially important
b. Tie plates, rail fastenings, and other track
on curves where they provide additional lateral
materials shall not be flame cut or otherwise al-
b. Type. Tie plates may be of either the single
c. Tie plates, rail fastenings, and other track
shoulder type (fig 6-1) or the double shoulder type
materials which are of improper type, broken, or
c. Installation. For track without tie plates,
(2) Driven vertical and square with the rail.
plates shall be installed during the next track re-
(3) Either of the cut or screw type.
(4) Driven with approximately c (0.125)
habilitation or rail replacement.
inch of space remaining between the head of the
spike and the base of the rail.
c. Spiking pattern.
a. The rail shall have a sufficient number of fas-
(1) On tangent track and curves less than 4
teners (spikes) to effectively maintain gage and
degrees, spikes shall be installed as shown in figure
provide sufficient rail restraint.
b. Spikes shall be:
(1) Of proper size for the tie plates used.