Enter the difference in elevation between edges (ft) and the lane width (ft) into the Cross Slope Calculator. The calculator will evaluate and display the Cross Slope.
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Cross Slope Formula
The following formula is used to calculate the Cross Slope.
CS = E / W * 100
- Where CS is the Cross Slope (%)
- E is the difference in elevation between edges (ft)
- W is the lane width (ft)
To calculate a cross slope, divide the elevation between edges by the lane width.
How to Calculate Cross Slope?
The following example problems outline how to calculate Cross Slope.
Example Problem #1:
- First, determine the difference in elevation between edges (ft).
- The difference in elevation between edges (ft) is given as: 2.5.
- Next, determine the lane width (ft).
- The lane width (ft) is provided as: 50.
- Finally, calculate the Cross Slope using the equation above:
CS = E / W * 100
The values given above are inserted into the equation below and the solution is calculated:
CS = 2.5 / 50 * 100 = 5.00 (%)
Example Problem #2:
For this problem, the variables needed are provided below:
difference in elevation between edges (ft) = 6.7
lane width (ft) = 198
This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer.
CS = E / W * 100 = ?