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Pavement Width Formula:
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Pavement width calculation considering cant (super elevation) is essential in road and railway design to ensure vehicle stability and safety while navigating curves. It determines the appropriate width needed to accommodate the banking effect.
The calculator uses the formula:
Where:
Explanation: This formula calculates the required pavement width based on the cant, curve radius, gravitational acceleration, and vehicle velocity to maintain stability during turning.
Details: Proper pavement width calculation ensures safe vehicle operation on curved sections, prevents overturning accidents, and provides comfortable driving experience by accounting for centrifugal forces.
Tips: Enter cant in cm, radius of curve in cm, acceleration due to gravity in m/s² (default 9.8), and vehicle velocity in km/h. All values must be positive numbers.
Q1: What is cant/super elevation in road design?
A: Cant or super elevation is the transverse slope provided on curved sections of roads or railways to counteract the centrifugal force and ensure vehicle stability.
Q2: Why is pavement width important on curved sections?
A: Adequate pavement width on curves provides sufficient space for vehicles to navigate safely, accounting for the banking effect and preventing vehicles from running off the road.
Q3: How does vehicle velocity affect pavement width?
A: Higher vehicle velocities require wider pavement widths on curves to maintain stability and safety, as centrifugal forces increase with speed.
Q4: What are typical values for cant in road design?
A: Cant values typically range from 2% to 10% depending on design speed, curve radius, and road classification according to transportation standards.
Q5: Can this formula be used for both roads and railways?
A: While the fundamental physics principles apply to both, specific design standards and parameters may differ between road and railway applications.