Design Speed given Total Length of Valley Curve Calculator

✖Length of Curve is the distance along the road where the alignment changes from upward to downward slope, creating a valley-shaped concave.ⓘ Length of Curve [L_s]			+10% -10%
✖Rate of Change of Acceleration refers to how quickly the acceleration of an object changes over time.ⓘ Rate of Change of Acceleration [C_a]			+10% -10%
✖Deviation Angle is the angle between the reference direction and the observed direction.ⓘ Deviation Angle [N]			+10% -10%

✖Design speed refers to the intended or planned operating speed for a particular section of a roadway or railway.ⓘ Design Speed given Total Length of Valley Curve [v]

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Design Speed given Total Length of Valley Curve Solution

STEP 0: Pre-Calculation Summary

Formula Used

Design Speed = ((Length of Curve/2)^2*Rate of Change of Acceleration/Deviation Angle)^(1/3)
v = ((L_s/2)^2*C_a/N)^(1/3)
This formula uses 4 Variables

Variables Used

Design Speed - (Measured in Meter per Second) - Design speed refers to the intended or planned operating speed for a particular section of a roadway or railway.
Length of Curve - (Measured in Meter) - Length of Curve is the distance along the road where the alignment changes from upward to downward slope, creating a valley-shaped concave.
Rate of Change of Acceleration - (Measured in Meter per Second) - Rate of Change of Acceleration refers to how quickly the acceleration of an object changes over time.
Deviation Angle - (Measured in Radian) - Deviation Angle is the angle between the reference direction and the observed direction.

STEP 1: Convert Input(s) to Base Unit

Length of Curve: 12.71876 Meter --> 12.71876 Meter No Conversion Required
Rate of Change of Acceleration: 4.2 Meter per Second --> 4.2 Meter per Second No Conversion Required
Deviation Angle: 77.85589 Degree --> 1.35884162257027 Radian (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

v = ((L_s/2)^2*C_a/N)^(1/3) --> ((12.71876/2)^2*4.2/1.35884162257027)^(1/3)

Evaluating ... ...

v = 4.99999995989914

STEP 3: Convert Result to Output's Unit

4.99999995989914 Meter per Second --> No Conversion Required

FINAL ANSWER

4.99999995989914 ≈ 5 Meter per Second <-- Design Speed

(Calculation completed in 00.004 seconds)

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< Design of Valley Curve Calculators

Design Speed given Length of Valley Curve

LaTeX Go Design Speed = (Length of Curve*Radius of Curve*Rate of Change of Acceleration)^(1/3)

Radius of Curve given Length of Valley Curve

LaTeX Go Radius of Curve = (Design Speed^3)/(Length of Curve*Rate of Change of Acceleration)

Rate of Change of Acceleration

LaTeX Go Rate of Change of Acceleration = (Design Speed^3)/(Length of Curve*Radius of Curve)

Length of Valley Curve given Time and Design Speed

LaTeX Go Length of Curve = Design Speed*Time

Design Speed given Total Length of Valley Curve Formula

LaTeX Go

Design Speed = ((Length of Curve/2)^2*Rate of Change of Acceleration/Deviation Angle)^(1/3)
v = ((L_s/2)^2*C_a/N)^(1/3)

Difference between Length of Valley Curve and Total Length of Valley Curve

"Length of Valley Curve" refers to the curve segment itself, while "Total Length of Valley Curve" includes the approach and departure sections, providing a comprehensive view of the entire transition.

How to Calculate Design Speed given Total Length of Valley Curve?

Design Speed given Total Length of Valley Curve calculator uses Design Speed = ((Length of Curve/2)^2*Rate of Change of Acceleration/Deviation Angle)^(1/3) to calculate the Design Speed, The Design Speed given Total Length of Valley Curve formula is defined as by taking the cube root of one-fourth of the square of the length of the curve, multiplied by the rate of change of acceleration, and then dividing by the deviation angle. Design Speed is denoted by v symbol.

How to calculate Design Speed given Total Length of Valley Curve using this online calculator? To use this online calculator for Design Speed given Total Length of Valley Curve, enter Length of Curve (L_s), Rate of Change of Acceleration (C_a) & Deviation Angle (N) and hit the calculate button. Here is how the Design Speed given Total Length of Valley Curve calculation can be explained with given input values -> 22.27954 = ((12.71876/2)^2*4.2/1.35884162257027)^(1/3).

FAQ

What is Design Speed given Total Length of Valley Curve?

The Design Speed given Total Length of Valley Curve formula is defined as by taking the cube root of one-fourth of the square of the length of the curve, multiplied by the rate of change of acceleration, and then dividing by the deviation angle and is represented as v = ((L_s/2)^2*C_a/N)^(1/3) or Design Speed = ((Length of Curve/2)^2*Rate of Change of Acceleration/Deviation Angle)^(1/3). Length of Curve is the distance along the road where the alignment changes from upward to downward slope, creating a valley-shaped concave, Rate of Change of Acceleration refers to how quickly the acceleration of an object changes over time & Deviation Angle is the angle between the reference direction and the observed direction.

How to calculate Design Speed given Total Length of Valley Curve?

The Design Speed given Total Length of Valley Curve formula is defined as by taking the cube root of one-fourth of the square of the length of the curve, multiplied by the rate of change of acceleration, and then dividing by the deviation angle is calculated using Design Speed = ((Length of Curve/2)^2*Rate of Change of Acceleration/Deviation Angle)^(1/3). To calculate Design Speed given Total Length of Valley Curve, you need Length of Curve (L_s), Rate of Change of Acceleration (C_a) & Deviation Angle (N). With our tool, you need to enter the respective value for Length of Curve, Rate of Change of Acceleration & Deviation Angle and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Design Speed?

In this formula, Design Speed uses Length of Curve, Rate of Change of Acceleration & Deviation Angle. We can use 2 other way(s) to calculate the same, which is/are as follows -

Design Speed = (Length of Curve*Radius of Curve*Rate of Change of Acceleration)^(1/3)
Design Speed = Length of Curve/Time

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