Ramp Slope Formula:
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The ramp slope degree calculation determines the angle of inclination of a ramp based on its vertical rise and horizontal run. This is essential for ensuring ramps meet accessibility standards and safety requirements.
The calculator uses the trigonometric formula:
Where:
Explanation: The formula calculates the angle whose tangent is the ratio of rise to run, converting the result from radians to degrees.
Details: Accurate slope calculation is crucial for wheelchair accessibility, building code compliance, construction safety, and ensuring proper drainage and functionality of ramped surfaces.
Tips: Enter both rise and run values in the same units (meters, feet, etc.). Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is the maximum recommended slope for wheelchair ramps?
A: ADA guidelines recommend a maximum slope of 1:12 (approximately 4.76 degrees) for wheelchair ramps.
Q2: How do I convert slope percentage to degrees?
A: Slope percentage = (rise/run) × 100. To convert to degrees: θ = arctan(percentage/100).
Q3: What units should I use for rise and run?
A: Use consistent units (both in meters, both in feet, etc.). The calculator works with any unit system as long as both measurements use the same units.
Q4: Can this calculator handle very steep slopes?
A: Yes, the calculator can handle any positive slope values, though extremely steep slopes may not be practical for most applications.
Q5: What's the difference between slope angle and gradient?
A: Slope angle is measured in degrees, while gradient is typically expressed as a ratio (e.g., 1:12) or percentage.