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 STRUCTURAL
Railroad Trackage-Continued
rail cutting
insufficient or improper embedment in ballast to prevent movement
inadequate drainage
n Ballast:
Dirt and mud accumulations
soft or wet spots
grass or weeds
washing away and settlement
inadequate extension beyond ties
slope to grade steeper than 2 to 1
n Drainage:
Obstructed drainage ditches and culverts
erosion of side slopes and shoulders
actual or potential slides onto or close to track
washing or erosion at head-walls
inlets discharge openings
n Turnouts: Refer to NAVFACINST 11230.1(Series) to determine proper
gages, for example, between frogs and flange faces and on tangents and
curves:
Lack of lubrication
clogged with debris or dirt
inadequately spiked
out-of-gage
improper operating condition of switch points, switch latches,
targets, and lamps:
loose/missing rail braces
worn/damaged switch and frog points
n Tank Car Unloading Tracks:
Bonding wires across rail joints, between rails and unloading header
pipelines, and connections between rails and ground rods, and
insulated rail joints
5-36
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