Field-book for Railroad Engineers: Circular and Parabolic Curves, Turnouts, Vertical Curves, Levelling, Computing Earth-work, Transition Curves on New Lines and Applied to Existing Lines, Together with Tables of Radii, Ordinates, Long Chords, Logarithms, Logarithmic and Natural Sines, Tangents, Etc., and a Metric Curve Table (Google eBook)

Front Cover
D. Appleton, 1912 - Railroad engineering - 312 pages
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Contents

To find a tangent at any station
11
Method by Offsets from Tangent SET PAGE 23 Deflection angle given to find poinU on the curve by offsets from the tangent
13
Ordinates
15
Definition
16
Approximate value for middle ordinate
18
Deflection angle or radius given to find the ordinate for curv ing rails
19
Eadii or deflection angles given to lay out a reversed or com pound curve
20
Chord deflection given to lay out a curve
21
Chords given to find the radii when the tangents arc parallel
22
Radii given to find the chords when the tangents arc parallel
23
One radius given to find the other when the tangents are not parallel
24
To find the common radius when the tangents are not parallel
25
Second method of finding the common radius when the tan gents are not parallel
26
B Compound Curves 41 Common tangent point of the two arcs
27
To find a limit in one direction of each radius
28
One radius given to find the other
29
SET PAGE
30
Second method of finding one radius when the other is given
31
To find the two radii
32
To find the tangents of the two branches
34
Second method of finding the tangents of the two branches
35
Turnouts and Crossings sect PAOI 49 Three cases of turnout
36
First and Second Cases 50 Definitions
37
Frog angle given to find the radius and the position of the frog
38
To find mechanically the proper position of a given frog
39
To find the second radius of a turnout reversing opposite the frog
40
References to proper problems
42
Turnout from Curves 57 Frog angle given to find the radius of the turnout and the posi tion of the frog
43
To find mechanically the proper position of a given frog
47
Radius of turnout given to find the frog angle and the position of the frog
48
Turnout to reverse and become parallel to the main track
51
Crossings on Curves 63 References to proper problems
52
Common radius given to find the central angles and chords
53
A Turnout from Straight Lines 66 Radius given to find the frog angle and the position of the frog
54
Frog angle given to find the radius of the turnout and the po sition of the frog
56
Turnout to reverse and become parallel to the main track
62
Position of a frog given to find the frog angle
63
Frog angle given to find the radius and the position of the frog
64
Finding certain chords frog angles and degrees of turnouts
65
Miscellaneous Problems 79 To find the radius of a curve to pass through a given point
66
To find the tangent point of a curve to pass through a given point
67
Locating a turnout curve
68
To find the radius when the distance from the intersection point to the curve is given
69
To find the external that is the distance from the intersection point to the curve when the radius is given
70
To locate a curve without setting the instrument at the tangent point
82
To measure the distance across a river
84
To change a tangent point so that the tangent may pass through a given point
86
To connect two curves by a common tangent
87
Locating Parabolic Curves 100 Propositions relating to the parabola
89
To lay out a parabola by tangent deflections
90
To lay out a parabola by middle ordinate8s
91
To draw a tangent to a parabola
92
To lay out a parabola by bisecting tangents
93
Example illustrating preceding methods
94
Radius of Curvature 108 Definition
95
To find the radius of curvature at certain stations
96
Example in finding radius of curvature
99
Simplification when the tangents are equal
101
Length of parabolic arcs
102
CHAPTER III
104
Two preliminary problems to be considered
106
Laying out tlio transition curve by offsets
110
Example of cubic parabola applied to an existing track
116
Angle of intersection and tangent given to find the radius
117
the central curve
120
Example when angle of intersection and radius of central curve
122
SET PAGE
125
Correction for the Earths Curvature and
131
Coning of the wheels
137
SET PAGE
143
To find the solidity of any number of successive sections
154
Nature of the correction
160
Long Chords
174
Corrections for Table III
183
Elevation of the Outer Rail on Curves
184
Correction for the Earths Curvature and for Refraction
185
Rise per Mile of Various Grades 18i
186
Trigonometrical and Miscellaneous Formula
188
Heights by Aneroid Barometer
193
Squares Cubes Square Roots Cube Roots and Reciprocals
203
Logarithms of Numbers 28Jl
221
Logarithmic Sines Cosines Tangents and Cotangents
237
Natural Sines and Cosines
285
Natural Tangents and Cotangents
295
Comparisorof French and English Weights and Measures
308
Metric Curve Table 809
309
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