Ramp Slope Formula:
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Definition: This calculator determines the slope of a car ramp based on the vertical rise and horizontal run measurements.
Purpose: It helps vehicle owners, mechanics, and construction professionals design safe and functional car ramps.
The calculator uses the formula:
Where:
Explanation: The slope is calculated by dividing the vertical rise by the horizontal run of the ramp.
Details: Correct ramp slope ensures vehicle safety, prevents scraping, and provides comfortable access. Most car ramps should have a slope between 15-20% (0.15-0.20).
Tips: Enter the vertical rise and horizontal run in consistent units (both in inches, feet, etc.). All values must be > 0.
Q1: What's the maximum recommended slope for car ramps?
A: For most vehicles, a maximum slope of 20% (1:5 ratio) is recommended to prevent bottoming out.
Q2: How do I convert slope to degrees?
A: Use the arctangent function: degrees = arctan(slope). For example, a 20% slope is about 11.3°.
Q3: What's the difference between slope and grade?
A: Slope is rise/run (unitless), while grade is rise/run expressed as a percentage (slope × 100).
Q4: How does ramp length affect slope?
A: Longer ramps (greater run) with the same rise will have gentler slopes, making them safer for vehicles.
Q5: What if my calculated slope is too steep?
A: Increase the run (horizontal distance) or decrease the rise (vertical change) to achieve a gentler slope.