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The Deflection Angle of Entrance Curve is the angle between the onward extension of the previous leg and the line ahead in a curved track or road design.
The calculator uses the formula:
Where:
Explanation: This formula calculates the entrance curve deflection angle based on the known central curve deflection angle in a standard 35-degree deflection system.
Details: Accurate calculation of deflection angles is crucial for proper track or road alignment design, ensuring smooth transitions between straight and curved sections, and maintaining safety standards in transportation infrastructure.
Tips: Enter the Deflection Angle of Central Curve in degrees. The value must be a positive number. The calculator will compute the corresponding Deflection Angle of Entrance Curve.
Q1: What is the typical range for deflection angles?
A: Deflection angles typically range from 0 to 35 degrees, depending on the specific track or road design requirements.
Q2: Why is 35 degrees used in this formula?
A: 35 degrees represents the standard maximum deflection angle used in many transportation design standards for smooth curve transitions.
Q3: Can this formula be used for both roads and railway tracks?
A: Yes, the principle applies to both road and railway curve design, though specific standards may vary between applications.
Q4: What units should be used for input values?
A: All angle measurements should be entered in degrees for consistency with the formula.
Q5: Are there limitations to this calculation method?
A: This formula assumes a standard 35-degree maximum deflection system. For non-standard designs or specific engineering requirements, additional calculations may be necessary.