1. What is the Australian Standards Ramp Calculator?

Definition: This calculator determines the required ramp length based on height according to Australian accessibility standards (1:14 slope ratio).

Purpose: It helps architects, builders, and property owners design compliant ramps for wheelchair access and mobility.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L \) — Required ramp length (meters)
• \( H \) — Height difference (meters)

Explanation: Australian Standard AS 1428.1 requires a maximum slope of 1:14 for ramps, meaning for every 1 meter of height, you need 14 meters of ramp length.

3. Importance of Ramp Calculation

Details: Proper ramp design ensures accessibility compliance, safety for wheelchair users, and meets building code requirements.

4. Using the Calculator

Tips: Simply enter the height difference in meters that the ramp needs to overcome. The calculator will determine the minimum required ramp length.

5. Frequently Asked Questions (FAQ)

Q1: Why 1:14 slope ratio?
A: This is the maximum slope allowed by Australian standards for wheelchair accessibility without requiring handrails (for heights ≤ 190mm).

Q2: When would I need a different slope ratio?
A: For steeper slopes (up to 1:8), handrails are required. Slopes steeper than 1:8 are generally not permitted for public access.

Q3: Does this include landing requirements?
A: No, this calculates only the sloped portion. Australian standards also require landings at the top, bottom, and for every 9 meters of ramp length.

Q4: How does this differ from other countries' standards?
A: Many countries use 1:12 (USA) or 1:15 (some EU nations). Australia's 1:14 is a middle ground between accessibility and space constraints.

Q5: What about ramp width requirements?
A: Minimum width is 1m for straight ramps, 1.5m for switchbacks. These are separate calculations from length.