1. What is a Ramp Gradient Calculator for Australia?

Definition: This calculator determines the gradient of a ramp according to Australian standards, based on the height and length measurements.

Purpose: It helps builders, architects, and accessibility planners ensure ramps meet Australian accessibility requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( G \) — Gradient (unitless ratio)
• \( H \) — Height (vertical rise in meters)
• \( L \) — Length (horizontal run in meters)

Explanation: The gradient is calculated by dividing the vertical rise by the horizontal run. This can be converted to a percentage by multiplying by 100.

3. Importance of Ramp Gradient Calculation in Australia

Details: Australian standards (AS 1428.1) specify maximum gradients for accessible ramps (typically 1:14 for new buildings). Proper gradient ensures accessibility and safety.

4. Using the Calculator

Tips: Enter the height (vertical change) and length (horizontal distance) in meters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum gradient allowed for ramps in Australia?
A: For new buildings, the maximum is 1:14 (about 7.14%). For existing buildings, 1:12 (8.33%) may be acceptable.

Q2: How do I convert the gradient to degrees?
A: Use arctangent: degrees = arctan(G). Our calculator shows the ratio and percentage which are more commonly used in Australian standards.

Q3: Does this include landing requirements?
A: No, this calculates gradient only. Australian standards require landings at least every 9 meters of ramp run.

Q4: What about handrail requirements?
A: Ramps steeper than 1:20 require handrails on both sides according to Australian standards.

Q5: How does this differ from slope calculations?
A: Gradient is rise/run (H/L), while slope is often expressed as a percentage (H/L × 100). Both terms are used in Australian standards.