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Curve Lead is the distance between the theoretical nose of crossing and the tangent point measured along the length of main track. Check FAQs
CL=2R0G
CL - Curve Lead?R0 - Radius of Outer Curve of Turnout?G - Gauge Length?

Curve Lead (C.L ) Example

With values
With units
Only example

Here is how the Curve Lead (C.L ) equation looks like with Values.

Here is how the Curve Lead (C.L ) equation looks like with Units.

Here is how the Curve Lead (C.L ) equation looks like.

29.6985Edit=2245Edit1.8Edit
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Curve Lead (C.L ) Solution

Follow our step by step solution on how to calculate Curve Lead (C.L )?

FIRST Step Consider the formula
CL=2R0G
Next Step Substitute values of Variables
CL=2245m1.8m
Next Step Prepare to Evaluate
CL=22451.8
Next Step Evaluate
CL=29.698484809835m
LAST Step Rounding Answer
CL=29.6985m

Curve Lead (C.L ) Formula Elements

Variables
Functions
Curve Lead
Curve Lead is the distance between the theoretical nose of crossing and the tangent point measured along the length of main track.
Symbol: CL
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Radius of Outer Curve of Turnout
Radius of Outer Curve of Turnout is the radius of outer curve from origin of turnout.
Symbol: R0
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Gauge Length
Gauge Length is the distance between the two rails of a railway track.
Symbol: G
Measurement: LengthUnit: m
Note: Value should be greater than 0.
sqrt
A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.
Syntax: sqrt(Number)

Other Formulas to find Curve Lead

​Go Curve Lead
CL=SL+L
​Go Curve Lead (C.L ) if given N
CL=2GN

Other formulas in Points and Crossings category

​Go Switch Angle
α=asin(dLt)
​Go Theoretical Length of Tongue Rail
Lt=dsin(α)
​Go Number of Crossing (N)
N=SLc
​Go Right Angle or Cole's Method
N=cot(αCrossing)

How to Evaluate Curve Lead (C.L )?

Curve Lead (C.L ) evaluator uses Curve Lead = sqrt(2*Radius of Outer Curve of Turnout*Gauge Length) to evaluate the Curve Lead, The Curve Lead (C.L ) formula is used to calculate curve lead length using gauge length and radius of outer curve of turnout as input. Curve Lead is denoted by CL symbol.

How to evaluate Curve Lead (C.L ) using this online evaluator? To use this online evaluator for Curve Lead (C.L ), enter Radius of Outer Curve of Turnout (R0) & Gauge Length (G) and hit the calculate button.

FAQs on Curve Lead (C.L )

What is the formula to find Curve Lead (C.L )?
The formula of Curve Lead (C.L ) is expressed as Curve Lead = sqrt(2*Radius of Outer Curve of Turnout*Gauge Length). Here is an example- 29.69848 = sqrt(2*245*1.8).
How to calculate Curve Lead (C.L )?
With Radius of Outer Curve of Turnout (R0) & Gauge Length (G) we can find Curve Lead (C.L ) using the formula - Curve Lead = sqrt(2*Radius of Outer Curve of Turnout*Gauge Length). This formula also uses Square Root (sqrt) function(s).
What are the other ways to Calculate Curve Lead?
Here are the different ways to Calculate Curve Lead-
  • Curve Lead=Switch Lead+Crossing LeadOpenImg
  • Curve Lead=2*Gauge Length*Number of CrossingOpenImg
Can the Curve Lead (C.L ) be negative?
No, the Curve Lead (C.L ), measured in Length cannot be negative.
Which unit is used to measure Curve Lead (C.L )?
Curve Lead (C.L ) is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Curve Lead (C.L ) can be measured.
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