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.

115 RE Rail Section

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

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

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

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

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

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

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

Get in touch now

We receive enquiries in English, Español (Spanish), Русский язык (Russian), Français (French) and العربية (Arabic). Our professional team will reply to you within one business day. Please feel free to contact us!