1. What is the Ramp Length Formula?

The ramp length formula calculates the actual length of a ramp using the Pythagorean theorem. It's essential for determining the amount of material needed and ensuring proper incline for accessibility and safety.

2. How Does the Calculator Work?

The calculator uses the Pythagorean theorem:

Where:

• \( rise \) — Vertical height change (feet)
• \( run \) — Horizontal distance (feet)
• \( Length \) — Actual ramp length (feet)

Explanation: This formula calculates the hypotenuse of a right triangle, where the rise and run form the two perpendicular sides.

3. Importance of Ramp Length Calculation

Details: Proper ramp length calculation is crucial for ADA compliance, safety, and determining material requirements for construction projects.

4. Using the Calculator

Tips: Enter the vertical rise and horizontal run in feet. Both values must be positive numbers. The calculator will determine the actual ramp length needed.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum slope for accessibility ramps?
A: ADA guidelines recommend a maximum slope of 1:12 (1 inch of rise per 12 inches of run).

Q2: How do I account for ramp landings?
A: Landings should be included in your total ramp length calculation and are required at the top, bottom, and where direction changes.

Q3: What materials are best for wood ramps?
A: Pressure-treated lumber, cedar, or redwood are good choices for outdoor ramps due to their weather resistance.

Q4: How do I calculate ramp angle?
A: Angle = arctan(rise/run). Most accessibility ramps should have an angle less than 4.8 degrees.

Q5: Do I need handrails for my ramp?
A: Handrails are required if the rise is greater than 6 inches or the horizontal projection is greater than 72 inches.