Ramp Gradient Formula:
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Definition: This calculator determines the gradient of a wheelchair ramp based on its height and length according to UK accessibility standards.
Purpose: It helps architects, builders, and property owners ensure their ramps meet accessibility requirements for disabled users.
The calculator uses the formula:
Where:
Explanation: The gradient is calculated by dividing the height difference by the ramp length.
Details: Proper gradient calculation ensures the ramp is accessible to wheelchair users and meets UK building regulations (typically 1:12 maximum gradient).
Tips: Enter the height difference in meters and the ramp length in meters. All values must be > 0.
Q1: What is the maximum gradient allowed for disabled ramps in the UK?
A: The recommended maximum gradient is 1:12 (8.33%) for wheelchair users, though 1:15 (6.67%) is preferred.
Q2: How do I convert the gradient to a percentage?
A: Multiply the gradient result by 100 to get the percentage slope.
Q3: What if my gradient exceeds the recommended maximum?
A: You'll need to increase the ramp length or consider adding intermediate landings.
Q4: Does this calculator account for landings?
A: No, this calculates the gradient between two points. Landings should be included in the overall ramp design.
Q5: What's the minimum width for a disabled ramp in the UK?
A: The minimum recommended width is 1200mm, though 1500mm is preferred for two-way traffic.