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The Length of Parabolic Summit Curve is the vertical curve with a gradient upwards. Check FAQs
LSc=NSSD2((2H)0.5+(2h)0.5)2
LSc - Length of Parabolic Summit Curve?N - Deviation Angle?SSD - Stopping Sight Distance?H - Height of Eye Level of Driver above Roadway?h - Height of Subject above Pavement Surface?

Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD Example

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Here is how the Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD equation looks like with Values.

Here is how the Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD equation looks like with Units.

Here is how the Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD equation looks like.

465.7662Edit=0.08Edit160Edit2((21.2Edit)0.5+(20.15Edit)0.5)2
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Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD Solution

Follow our step by step solution on how to calculate Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD?

FIRST Step Consider the formula
LSc=NSSD2((2H)0.5+(2h)0.5)2
Next Step Substitute values of Variables
LSc=0.08160m2((21.2m)0.5+(20.15m)0.5)2
Next Step Prepare to Evaluate
LSc=0.081602((21.2)0.5+(20.15)0.5)2
Next Step Evaluate
LSc=465.766156261198m
LAST Step Rounding Answer
LSc=465.7662m

Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD Formula Elements

Variables
Length of Parabolic Summit Curve
The Length of Parabolic Summit Curve is the vertical curve with a gradient upwards.
Symbol: LSc
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Deviation Angle
Deviation Angle of Vertical curve is the algebraic difference in grades or gradiests.
Symbol: N
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Stopping Sight Distance
Stopping Sight Distance is defined as distance provided on the road before a sharp turn.
Symbol: SSD
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Height of Eye Level of Driver above Roadway
Height of eye level of driver above roadway surface.
Symbol: H
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Height of Subject above Pavement Surface
Height of subject above pavement surface.
Symbol: h
Measurement: LengthUnit: m
Note: Value should be greater than 0.

Other Formulas to find Length of Parabolic Summit Curve

​Go Length of Summit Curve for Stopping Sight Distance when Curve Length is less than SSD
LSc=2SSD-(((2H)0.5+(2h)0.5)2N)
​Go Length of Summit Curve when Length of Curve is greater than OSD or ISD
LSc=N(SSD2)8H
​Go Length of Summit Curve when Length of Curve is less than OSD or ISD
LSc=2SSD-(8HN)

How to Evaluate Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD?

Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD evaluator uses Length of Parabolic Summit Curve = (Deviation Angle*Stopping Sight Distance^2)/((2*Height of Eye Level of Driver above Roadway)^0.5+(2*Height of Subject above Pavement Surface)^0.5)^2 to evaluate the Length of Parabolic Summit Curve, Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD is defined as ratio of product of deviation angle and stopping sight distance to the height of eye level and subject above pavement. Length of Parabolic Summit Curve is denoted by LSc symbol.

How to evaluate Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD using this online evaluator? To use this online evaluator for Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD, enter Deviation Angle (N), Stopping Sight Distance (SSD), Height of Eye Level of Driver above Roadway (H) & Height of Subject above Pavement Surface (h) and hit the calculate button.

FAQs on Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD

What is the formula to find Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD?
The formula of Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD is expressed as Length of Parabolic Summit Curve = (Deviation Angle*Stopping Sight Distance^2)/((2*Height of Eye Level of Driver above Roadway)^0.5+(2*Height of Subject above Pavement Surface)^0.5)^2. Here is an example- 465.7662 = (0.08*160^2)/((2*1.2)^0.5+(2*0.15)^0.5)^2.
How to calculate Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD?
With Deviation Angle (N), Stopping Sight Distance (SSD), Height of Eye Level of Driver above Roadway (H) & Height of Subject above Pavement Surface (h) we can find Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD using the formula - Length of Parabolic Summit Curve = (Deviation Angle*Stopping Sight Distance^2)/((2*Height of Eye Level of Driver above Roadway)^0.5+(2*Height of Subject above Pavement Surface)^0.5)^2.
What are the other ways to Calculate Length of Parabolic Summit Curve?
Here are the different ways to Calculate Length of Parabolic Summit Curve-
  • Length of Parabolic Summit Curve=2*Stopping Sight Distance-(((2*Height of Eye Level of Driver above Roadway)^0.5+(2*Height of Subject above Pavement Surface)^0.5)^2/Deviation Angle)OpenImg
  • Length of Parabolic Summit Curve=(Deviation Angle*(Stopping Sight Distance^2))/(8*Height of Eye Level of Driver above Roadway)OpenImg
  • Length of Parabolic Summit Curve=2*Stopping Sight Distance-((8*Height of Eye Level of Driver above Roadway)/Deviation Angle)OpenImg
Can the Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD be negative?
No, the Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD, measured in Length cannot be negative.
Which unit is used to measure Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD?
Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Length of Summit Curve for Stopping Sight Distance when Curve Length is more than SSD can be measured.
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