MIL-HDBK-1005/6
Tie Plates. Use tie plates conforming to specifications for
5.4
hot-worked, high-carbon steel tie plates including 0.20 percent copper. For
size and material, see AREA Manual, Chapter 5, Track, Part 1, Tie Plates.
Rail Joint Spacing. Rail joint spacing shall be provided to insure
5.5
space for expansion of the rail as specified in AREA Manual, Chapter 5, Part
5, Track Maintenance.
Rail Joint Bar. Use high carbon-steel, head-free, head-eased
5.6
sections as specified in AREA Manual, Chapter 4, Part 1, Design and Part 2,
Specifications. For bar punching pattern and application, see AREA Manual,
Chapter 4, Rail, Part 1, Design, Table 1, Recommended Rail Drillings, Bar
Punchings and Track Bolts.
Bolts and Nuts For Rail Joint Bar. Use oval neck, heat-treated,
5.7
carbon steel track bolts and carbon-steel nuts as specified in AREA Manual,
Chapter 4, Part 1, Design and Part 2, Specifications. For bolt size and
application, see AREA Manual, Chapter 4, Rail, Part 1, Design, Table 1,
Recommended Rail Drillings, Bar Punchings and Track Bolts.
Spring Washers. Use washers conforming to specifications as
5.8
recommended in the AREA Manual, Chapter 4, Part 2, Specifications for Spring
Washers.
Rail Anchors. Use a one-piece anchor. Anchors shall be used on
5.9
grades to restrain rail movement in the predominant direction of traffic and
to resist temperature expansion. Anchors shall be applied in pairs on
opposite rails so that they both bear against either the tie or tie plate.
Anchors shall be uniformly distributed along the rail without application on
joint ties. See AREA Manual, Chapter 5, Part 5, Track Maintenance. For light
density lines, a minimum, of 8 rail anchors per 39 foot section is recommended
per AREA Bulletin 709.
Rail Gage Rods. To prevent rail spread and overturning on curves
5.10
over 10 degrees (574-foot radius) adjustable gage rods (for standard or
widened gage) may be used. Gage rods shall not be used as a substitute for
competent ties.
Rail Braces. Use braces on rails subject to overturning and, if
5.11
required, on outside rails on curves of 16 degrees or more (359-foot radius or
less).
Guardrails.
Use guardrails as follows:
5.12
a)
Opposite the frog point for protection, except for selfguarded
frogs.
b)
Where derailment is likely.
9
Previous Page
