1. What is a Length of Ramp Calculator?

Definition: This calculator determines the required length of a ramp based on the vertical height and desired slope.

Purpose: It helps architects, builders, and accessibility planners design ramps that meet safety standards and usability requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L \) — Length of ramp (feet)
• \( H \) — Vertical height (feet)
• \( S \) — Slope ratio (unitless)

Explanation: The vertical height is divided by the slope ratio to determine the required ramp length.

3. Importance of Ramp Length Calculation

Details: Proper ramp length ensures ADA compliance, safety, and accessibility for wheelchair users and others with mobility challenges.

4. Using the Calculator

Tips: Enter the vertical height in feet and the desired slope ratio (default 0.0833 for 1:12 slope). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical slope for accessibility ramps?
A: The ADA recommends a maximum slope of 1:12 (0.0833), meaning 1 inch of rise per 12 inches of run.

Q2: How do I convert slope from degrees to ratio?
A: Slope ratio = tan(θ), where θ is the angle in degrees. For example, 4.76° ≈ 1:12 slope.

Q3: When would I use a different slope?
A: Steeper slopes may be used for temporary ramps (max 1:8) or residential applications where space is limited.

Q4: Does this include landing requirements?
A: No, remember to add platform landings at top, bottom, and intervals (every 30 feet for ADA).

Q5: How does ramp length affect construction?
A: Longer ramps require more materials and space but provide easier access. Always check local building codes.