TM 5-628/AFR 91-44
Major components of a turnout are the switch,
frog, and guard rails. Figure 8-1 shows a typical
Turnouts are designed to divert trains from one
turnout with the various parts identified.
track to another. Good turnout maintenance is es-
sential for the safe and efficient operation of trains.
b. Rail. All rail used within the limits of a turn-
8-2. General requirements
out shall be of the same weight and section. Com-
a. Materials. All materials used within the
promise joints are not permitted within the limits of
limits of a turnout shall:
(1) Be factory designed and constructed.
c. Ties. The standards in chapter 5 of this
(2) Be the proper type and size.
manual shall apply to ties within the limits of a
(3) Be properly installed.
(4) Not be flame cut or otherwise altered.