Design of Steel Rail
Steel rail is the basic bearing structure of railway track which is used to guide the locomotive vehicle and provides wheel rolling contact surface of least resistance at the same time. High quality steel rail must possess enough bearing capacity, bending strength, fracture toughness, stability and corrosion resistance performance. What’s more, the design of steel rail also should be considered while purchasing rails. Next are some AREMA recommended rail sections.
![60kg railroad track steel rail](/uploads/allimg/60kg-railroad-track-steel-rail.jpg)
115 RE Rail Section
![115 RE rail section](/uploads/allimg/115-re-rail-section.jpg)
Rail Area (square inch) Head Web Base Whole Rail |
3.8861 3.0362 4.2947 11.2171 |
Rail Weight (lb/yd) (based on specific gravity of rail steel = 7.84) | 114.3757 |
Moment of Inertia about the neutral axis | 65.5 |
Section modulus of the head Section modulus of the base |
18.0 21.9 |
Height of neutral axis above base | 2.99 |
Lateral moment of inertia | 10.7 |
Lateral section modulus of the head Lateral section modulus of the base |
7.88 3.89 |
119 RE Rail Section
![119 RE rail section](/uploads/allimg/119-re-rail-section.jpg)
Rail Area (square inch) Head Web Base Whole Rail |
4.3068 3.0363 4.2946 11.6378 |
Rail Weight (lb/yd) (based on specific gravity of rail steel = 7.84) | 118.6657 |
Moment of Inertia about the neutral axis | 71.4 |
Section modulus of the head Section modulus of the base |
19.4 22.8 |
Height of neutral axis above base | 3.13 |
Lateral moment of inertia | 10.8 |
Lateral section modulus of the head Lateral section modulus of the base |
8.16 3.94 |
Height of shear center above base | 1.51 |
Torsional rigidity is ‘KG’ where G is the modulus of rigidity and K = (error for K greater than 10%) |
5.11 |
132 RE Rail Section
![132 RE rail section](/uploads/allimg/132-re-rail-section.jpg)
Rail Area (square inch) Head Web Base Whole Rail |
4.4274 3.6149 4.8701 12.9124 |
Rail Weight (lb/yd) (based on specific gravity of rail steel = 7.84) | 131.6622 |
Moment of Inertia about the neutral axis | 87.9 |
Section modulus of the head Section modulus of the base |
22.4 27.4 |
Height of neutral axis above base | 3.20 |
Lateral moment of inertia | 14.4 |
Lateral section modulus of the head Lateral section modulus of the base |
9.57 4.79 |
Height of shear center above base | 1.57 |
Torsional rigidity is ‘KG’ where G is the modulus of rigidity and K = (error for K greater than 10%) |
5.31 |
133 RE Rail Section
![133 RE rail section](/uploads/allimg/133-re-rail-section.jpg)
Rail Area (square inch) Head Web Base Whole Rail |
4.7279 3.4645 4.8757 13.0681 |
Rail Weight (lb/yd) (based on specific gravity of rail steel = 7.84) | 133.2498 |
Moment of Inertia about the neutral axis | 86.2 |
Section modulus of the head Section modulus of the base |
22.3 26.9 |
Height of neutral axis above base | 3.20 |
Lateral moment of inertia | 14.4 |
Lateral section modulus of the head Lateral section modulus of the base |
9.62 4.81 |
Height of shear center above base | 1.57 |
Torsional rigidity is ‘KG’ where G is the modulus of rigidity and K = (error for K greater than 10%) |
5.69 |
136 RE Rail Section
![136 RE rail section](/uploads/allimg/136-re-rail-section.jpg)
Rail Area (square inch) Head Web Base Whole Rail |
4.8187 3.6375 4.8702 13.3263 |
Rail Weight (lb/yd) (based on specific gravity of rail steel = 7.84) | 135.8826 |
Moment of Inertia about the neutral axis | 94.20 |
Section modulus of the head Section modulus of the base |
23.70 28.20 |
Height of neutral axis above base | 3.34 |
Lateral moment of inertia | 14.44 |
Lateral section modulus of the head Lateral section modulus of the base |
9.83 4.82 |
Height of shear center above base | 1.64 |
Torsional rigidity is ‘KG’ where G is the modulus of rigidity and K = (error for K greater than 10%) |
6.24 |
140 RE Rail Section
![140 RE rail section](/uploads/allimg/140-re-rail-section.jpg)
Rail Area (square inch.) Head Web Base Whole Rail |
5.0827 3.7092 4.8757 13.6675 |
Rail Weight (lb/yd) (based on specific gravity of rail steel = 7.84) | 139.3617 |
Moment of Inertia about the neutral axis | 95.9 |
Section modulus of the head Section modulus of the base |
24.3 28.6 |
Height of neutral axis above base | 3.36 |
Lateral moment of inertia | 14.9 |
Lateral section modulus of the head Lateral section modulus of the base |
9.95 4.98 |
Height of shear center above base | 1.67 |
Torsional rigidity is ‘KG’ where G is the modulus of rigidity and K = (error for K greater than 10%) |
6.85 |
141 RE Rail Section
![141 RE rail section](/uploads/allimg/141-re-rail-section.jpg)
Rail Area (square inch.) Head Web Base Whole Rail |
5.3724 3.5547 4.8701 13.7972 |
Rail Weight (lb/yd) (based on specific gravity of rail steel = 7.84) |
140.7002 |
Moment of Inertia about the neutral axis | 100.44 |
Section modulus of the head Section modulus of the base |
25.24 28.97 |
Lateral moment of inertia | 14.91 |
Lateral section modulus of the head Lateral section modulus of the base |
9.74 4.97 |
Height of shear center above base | 1.88 |
Torsional rigidity is ‘KG’ where G is the modulus of rigidity and K = (error for K greater than 10%) |
5.97 |
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