1. What is Wheelchair Ramp Slope?

The wheelchair ramp slope is the ratio of vertical rise to horizontal run, expressed as a unitless ratio (e.g., 1:12). It determines the steepness and accessibility of a ramp for wheelchair users and people with mobility challenges.

2. How Does the Calculator Work?

The calculator uses the basic slope formula:

Where:

• \( Rise \) — Vertical height difference (cm)
• \( Run \) — Horizontal length of the ramp (cm)

Explanation: The slope is expressed as a ratio (e.g., 1:12 means for every 12 cm of horizontal run, there is 1 cm of vertical rise).

3. Canada Accessibility Standards

Details: According to Canadian accessibility standards, the maximum allowable slope for wheelchair ramps is 1:12 (8.33%). This ensures safe and accessible navigation for wheelchair users and people with mobility aids.

4. Using the Calculator

Tips: Enter the vertical rise and horizontal run in centimeters. The calculator will determine the slope ratio and check compliance with Canadian standards. Values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum slope allowed in Canada?
A: The maximum slope for wheelchair ramps in Canada is 1:12 (8.33% grade) for most public and residential applications.

Q2: Are there exceptions to the 1:12 rule?
A: For existing buildings where space is limited, slopes up to 1:10 may be permitted for short distances, but 1:12 is the preferred standard.

Q3: What about ramp landings?
A: Ramps longer than 9 meters require intermediate landings. Landings should be at least 1.5 meters long and as wide as the ramp.

Q4: Are handrails required?
A: Yes, handrails are required on both sides of ramps with a rise greater than 200 mm or horizontal projection greater than 2 meters.

Q5: What about edge protection?
A: Ramps and landings with drop-offs must have curbs, railings, or other protective barriers to prevent wheelchairs from slipping off.