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Australian Standard AS 1428.1 Requirements:
Maximum Gradient: ≤ 1:14 (7.1%) for public access ramps
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The Ramp Gradient Calculator helps determine the slope of ramps according to Australian Standard AS 1428.1 for disability access. It calculates both percentage gradient and ratio format to ensure compliance with accessibility requirements.
The calculator uses the standard gradient formula:
Where:
Australian Standard AS 1428.1 Requirement: Maximum gradient for public access ramps is 1:14 (7.1%)
Details: Proper ramp gradients are essential for wheelchair accessibility, safety, and compliance with Australian disability discrimination legislation. Incorrect gradients can make ramps unusable or dangerous for people with mobility impairments.
Tips: Enter rise and run measurements in meters. Ensure measurements are accurate and represent the actual vertical and horizontal distances. The calculator will automatically check compliance with AS 1428.1 standards.
Q1: What is the maximum allowable gradient under AS 1428.1?
A: The maximum gradient for public access ramps is 1:14 (7.1%). Steeper gradients may be permitted in specific circumstances with appropriate landings.
Q2: How do I measure rise and run accurately?
A: Rise is the vertical height difference from start to finish. Run is the horizontal distance along the ramp surface. Use precise measuring tools for accuracy.
Q3: Are there different requirements for private vs public ramps?
A: Yes, private ramps may have different requirements. Always check local building codes and the specific application of AS 1428.1.
Q4: What about ramp landings and handrails?
A: AS 1428.1 also specifies requirements for landings (maximum 9m between landings) and handrails. This calculator focuses only on gradient compliance.
Q5: Can this calculator be used for existing ramps?
A: Yes, it can assess compliance of existing ramps and help determine if modifications are needed to meet accessibility standards.