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Gradient Formula:
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Ramp gradient is the steepness of a ramp expressed as a percentage, calculated as the ratio of vertical rise to horizontal run multiplied by 100. It is a critical measurement in accessibility design and construction according to Australian standards.
The calculator uses the standard gradient formula:
Where:
Explanation: This formula calculates the slope percentage, which is essential for determining if a ramp meets accessibility requirements under AS 1428 standards.
Details: Accurate gradient calculation is crucial for ensuring ramps are accessible to people with disabilities, meeting building code requirements, and providing safe and comfortable access for all users.
Tips: Enter rise and run values in meters. Both values must be positive numbers greater than zero. The calculator will compute the gradient percentage according to Australian standards.
Q1: What is the maximum allowable gradient for ramps in Australia?
A: According to AS 1428.1, the maximum gradient for accessible ramps is 1:14 (approximately 7.14%) for most applications.
Q2: How do I measure rise and run accurately?
A: Rise is the vertical height from start to finish of the ramp. Run is the horizontal distance along the ramp's path. Use precise measuring tools for accurate results.
Q3: Are there different requirements for different ramp types?
A: Yes, AS 1428 specifies different maximum gradients for various applications including pedestrian ramps, vehicle ramps, and ramps in public buildings.
Q4: What if my calculated gradient exceeds the maximum?
A: If the gradient exceeds allowable limits, you may need to increase the run length, decrease the rise, or consider alternative access solutions like lifts.
Q5: Does this calculator account for landings and handrails?
A: This calculator provides the basic gradient calculation. Full ramp design must consider landings, handrails, and other requirements specified in AS 1428.