CEMP-E
TI 850-02
AFMAN 32-1125(I)
1 MARCH 2000
switches, the heel bolts are loose and the nuts and bolts often appear solidly rusted together, which
would prevent re-tightening. Some switch points are also badly chipped or broken, and other
miscellaneous parts need replacement.
About half the turnouts had most or all of their ties replaced during the last tie replacement program. A
few turnouts that did not get new ties do need some new ones.
Road Crossings
a. Description: Most crossings are all asphalt, with a few gravel/dirt type. There are two rubber
crossings through the Main Highway near the connection with the commercial carrier.
b. General Condition: About 25 percent of the asphalt crossings are in fair to poor condition. Likewise,
the track in those crossings appears to be in fair to poor condition, typically showing loose joints and wide
gage. Through a few crossings, only the slow and careful operation by the installation train crews has
prevented derailments from occurring.
Track Geometry
a. Description: Track geometry describes the relative position of the two rails and track in the vertical and
horizontal planes. The three primary measurements are:
1) Alignment - a measure of lateral track deviations.
2) Surface/Crosslevel - measures of vertical track deviations.
3) Gage - the spacing between the two rails. (Standard Gage is 56-1/2 in.).
C-15
Previous Page
