US Army Railroad Railway Track Maintenance II Ed.1 211p.pdf

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SUBCOURSE EDITION
TR0671
1
RAILWAY TRACK MAINTENANCE II
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Reference Text (RT) 671 is the second of two texts on railway track maintenance. The first, RT 670, Railway Track
Maintenance I, covers fundamentals of railway engineering; roadbed, ballast, and drainage; and track elements--rail, crossties,
track fastenings, and rail joints. Reference Text 671 amplifies many of those subjects and also discusses such topics as
turnouts, curves, grade crossings, seasonal maintenance, and maintenance-of-way management.
If the student has had no practical experience with railway maintenance, it is advisable that RT 670 be studied before
this text. In doing so, many of the points stressed in this text will be clarified. In addition, frequent references are made in
this text to material in RT 670 so that certain definitions, procedures, etc., may be reviewed if needed.
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CONTENTS
Paragraph
Page
INTRODUCTION.................................................................................................................
1
CHAPTER 1.
TRACK REHABILITATION.............................................................
1.1
7
Section
I.
Surfacing.....................................................................................
1.2
8
II.
Re-Laying Rail............................................................................
1.12
18
III.
Tie Renewal................................................................................
1.18
23
CHAPTER 2.
TURNOUTS AND SPECIAL
SWITCHES.........................................................................................
2.1
29
Section
I.
Components................................................................................
2.2
29
II.
Location......................................................................................
2.13
45
III.
Construction................................................................................
2.18
48
IV.
Maintenance................................................................................
2.24
52
V.
Special Switches and Track
Constructions..............................................................................
2.29
55
CHAPTER 3.
CURVES..............................................................................................
3.1
62
Section
I.
Characteristics.............................................................................
3.2
62
II.
Superelevation............................................................................
3.7
66
III.
Spirals.........................................................................................
3.12
70
IV.
Stringlining.................................................................................
3.16
73
V.
Lining an Actual Curve ..............................................................
3.27
85
CHAPTER 4.
GRADE CROSSINGS, GUARD
RAILS, AND SEASONAL MAIN-
TENANCE...........................................................................................
4.1
92
Section
I.
Crossings at Grade......................................................................
4.2
92
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