1. What is Wheelchair Ramp Slope?

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

2. How Does the Calculator Work?

The calculator uses the slope formula:

Where:

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

Explanation: The calculator converts the slope to a 1:X ratio format and checks compliance with Ontario's maximum 1:12 slope requirement.

3. Ontario Accessibility Standards

Details: Ontario's accessibility standards require wheelchair ramps to have a maximum slope of 1:12 (8.33%). This means for every 1 cm of vertical rise, there must be at least 12 cm of horizontal run.

4. Using the Calculator

Tips: Enter the vertical rise and horizontal run in centimeters. The calculator will determine the slope ratio and verify if it meets Ontario standards. If not compliant, it will show the maximum allowed rise for your run length.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum slope allowed in Ontario?
A: The maximum slope is 1:12 (8.33%) for wheelchair ramps according to Ontario's accessibility standards.

Q2: Are there exceptions to the 1:12 rule?
A: For existing buildings where space is limited, a slope of 1:10 may be permitted for short distances, but 1:12 is the standard for new construction.

Q3: What is the minimum ramp width required?
A: Ontario standards require a minimum clear width of 920 mm (36 inches) for wheelchair ramps.

Q4: Do I need handrails?
A: Handrails are required on both sides for ramps with a rise greater than 200 mm (8 inches) or a horizontal projection greater than 2 meters.

Q5: What about landing requirements?
A: Ramps must have level landings at the top, bottom, and where changes in direction occur. Landings should be at least 1.5 meters long.