1. What is an Australian Ramp Calculator?

Definition: This calculator determines the required ramp length based on height and slope ratio according to Australian standards (AS 1428.1).

Purpose: It helps architects, builders, and accessibility consultants design compliant ramps for wheelchair access.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L \) — Ramp length (meters)
• \( H \) — Height difference (meters)
• \( R \) — Ratio multiplier (unitless, typically 14 for 1:14 slope)

Explanation: The height is multiplied by the ratio to determine the required ramp length to meet accessibility standards.

3. Importance of Ramp Calculation

Details: Proper ramp calculation ensures compliance with Australian accessibility standards, safe wheelchair access, and proper gradient for all users.

4. Using the Calculator

Tips: Enter the height difference in meters and ratio multiplier (default 14 for 1:14 slope). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 1:14 the standard ratio?
A: AS 1428.1 specifies 1:14 as the maximum gradient for accessible ramps to ensure wheelchair users can navigate safely.

Q2: When would I use a different ratio?
A: In constrained spaces, you might use 1:10 (R=10) with handrails or 1:8 (R=8) for short rises, but these require special consideration.

Q3: Does this include landing requirements?
A: No, remember to add appropriate landing spaces at top, bottom, and intervals (every 9m for 1:14 ramps).

Q4: How do I measure height difference?
A: Measure vertically from the lower level to the upper level where the ramp will connect.

Q5: Are there other requirements for compliant ramps?
A: Yes, including width (minimum 1m), handrails, edge protection, and surface requirements per AS 1428.1.