Design Speed given Length of Valley Curve and Time Calculator

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Vertical alignment

Design of Transition Curves and Setback Distances

Design of Superelevation

Marshall Mix Design

Pavement Materials

Sight Distance

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Length of Valley Curve

Length of Summit Curve greater than Sight Distance

Length of Summit Curve Less than Sight Distance

Length of Summit Curve with Grade Angles

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Design of Valley Curve

Length of Valley Curve greater than Stopping Sight Distance

Length of Valley Curve Less than Stopping Sight Distance

✖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%
✖The time it takes for a vehicle or object to traverse the length of the valley curve while experiencing a specific rate of change of acceleration.ⓘ Time [t]			+10% -10%

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

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Formula

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Design Speed given Length of Valley Curve and Time

Formula

`"v" = "L"_{"s"}/"t"`

Example

`"1.75m/s"="7m"/"4s"`

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Design Speed given Length of Valley Curve and Time Solution

STEP 0: Pre-Calculation Summary

Formula Used

Design Speed = Length of Curve/Time
v = L_s/t
This formula uses 3 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.
Time - (Measured in Second) - The time it takes for a vehicle or object to traverse the length of the valley curve while experiencing a specific rate of change of acceleration.

STEP 1: Convert Input(s) to Base Unit

Length of Curve: 7 Meter --> 7 Meter No Conversion Required
Time: 4 Second --> 4 Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

v = L_s/t --> 7/4

Evaluating ... ...

v = 1.75

STEP 3: Convert Result to Output's Unit

1.75 Meter per Second --> No Conversion Required

FINAL ANSWER

1.75 Meter per Second <-- Design Speed

(Calculation completed in 00.020 seconds)

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Created by Rahul

Dayanada Sagar college of Engineering (DSCE), banglore

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Verified by Kartikay Pandit

National Institute Of Technology (NIT), Hamirpur

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< 12 Design of Valley Curve Calculators

Total Length of Valley Curve

Go Length of Curve = 2*sqrt((Deviation Angle*Design Speed^3)/Rate of Change of Acceleration)

Design Speed given Total Length of Valley Curve

Go Design Speed = ((Length of Curve/2)^2*Rate of Change of Acceleration/Deviation Angle)^(1/3)

Rate of Change of Acceleration given Total Length of Valley Curve

Go Rate of Change of Acceleration = (Length of Curve/2)^2*Deviation Angle*Design Speed^3

Deviation Angle given Total Length of Valley Curve

Go Deviation Angle = (Length of Curve/2)^2*Rate of Change of Acceleration/Design Speed^3

Design Speed given Length of Valley Curve

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

Radius of Curve given Length of Valley Curve

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

Rate of Change of Acceleration

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

Length of Valley Curve

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

Time given Rate of Change of Acceleration

Go Time = ((Design Speed^2)/Radius of Curve)/Rate of Change of Acceleration

Length of Valley Curve given Time and Design Speed

Go Length of Curve = Design Speed*Time

Design Speed given Length of Valley Curve and Time

Go Design Speed = Length of Curve/Time

Time given Length of Valley Curve and Design Speed

Go Time = Length of Curve/Design Speed

Design Speed given Length of Valley Curve and Time Formula

Design Speed = Length of Curve/Time
v = L_s/t

Length of the summit curve

The term "length of the valley curve" is usually used in the field of highway or railway engineering to describe a specific feature in the roadway design. It refers to the distance along the road or track where the alignment changes from an upward slope (crest) to a downward slope (sag), which creates a concave or valley-like shape.

How to Calculate Design Speed given Length of Valley Curve and Time?

Design Speed given Length of Valley Curve and Time calculator uses Design Speed = Length of Curve/Time to calculate the Design Speed, Design Speed given Length of Valley Curve and Time formula is defined as The Ratio of Length of Valley Curve and time. Design Speed is denoted by v symbol.

How to calculate Design Speed given Length of Valley Curve and Time using this online calculator? To use this online calculator for Design Speed given Length of Valley Curve and Time, enter Length of Curve (L_s) & Time (t) and hit the calculate button. Here is how the Design Speed given Length of Valley Curve and Time calculation can be explained with given input values -> 0.875 = 7/4.

FAQ

What is Design Speed given Length of Valley Curve and Time?

Design Speed given Length of Valley Curve and Time formula is defined as The Ratio of Length of Valley Curve and time and is represented as v = L_s/t or Design Speed = Length of Curve/Time. Length of Curve is the distance along the road where the alignment changes from upward to downward slope, creating a valley-shaped concave & The time it takes for a vehicle or object to traverse the length of the valley curve while experiencing a specific rate of change of acceleration.

How to calculate Design Speed given Length of Valley Curve and Time?

Design Speed given Length of Valley Curve and Time formula is defined as The Ratio of Length of Valley Curve and time is calculated using Design Speed = Length of Curve/Time. To calculate Design Speed given Length of Valley Curve and Time, you need Length of Curve (L_s) & Time (t). With our tool, you need to enter the respective value for Length of Curve & Time 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 & Time. 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/2)^2*Rate of Change of Acceleration/Deviation Angle)^(1/3)

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