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 in feet.
Purpose: It helps vehicle owners, mechanics, and construction professionals ensure ramps meet safety standards and vehicle requirements.
The calculator uses the formula:
Where:
Explanation: The slope is calculated by dividing the vertical rise by the horizontal run, then optionally converted to a percentage.
Details: Proper slope calculation ensures vehicle accessibility, prevents scraping, and meets ADA or industry standards where applicable.
Tips: Measure the vertical rise and horizontal run in feet. Enter both values (must be > 0). The calculator provides both ratio and percentage results.
Q1: What's a safe slope for car ramps?
A: Typically 15-20% (0.15-0.20 ratio) maximum for most vehicles, but check your vehicle's specifications.
Q2: How do I measure rise and run?
A: Rise is the vertical change in height. Run is the horizontal distance covered by the ramp.
Q3: What's the difference between ratio and percentage?
A: Ratio is rise:run (e.g., 1:12), while percentage is (rise/run)×100 (e.g., 8.33% for 1:12).
Q4: Can I use this for wheelchair ramps?
A: Yes, but ADA requires ≤8.33% (1:12 ratio) slope for wheelchair ramps.
Q5: What if my ramp has multiple sections?
A: Calculate each section separately or measure total rise over total run.