Ramp Length Formula:
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Definition: This calculator determines the required length of a wheelchair ramp based on UK building regulations (Part M).
Purpose: It helps architects, builders, and property owners design accessible ramps that comply with UK accessibility standards.
The calculator uses the formula:
Where:
Explanation: UK Part M regulations recommend a maximum gradient of 1:20 for wheelchair ramps, meaning for every 1 meter of height, you need 20 meters of ramp length.
Details: Correct ramp length ensures accessibility compliance, safety for wheelchair users, and avoids excessive steepness that could be dangerous.
Tips: Simply enter the height difference in meters that the ramp needs to overcome. The calculator will determine the minimum required length.
Q1: Is 1:20 the only allowed gradient in the UK?
A: While 1:20 is recommended, steeper gradients (maximum 1:12) may be allowed in existing buildings where space is limited, with appropriate safety measures.
Q2: What if I can't accommodate the full length?
A: Consider switchback (zigzag) designs, platform breaks, or consult an accessibility specialist about possible exceptions.
Q3: Does this include landing areas?
A: No, additional space is needed for level landings at top, bottom, and any changes of direction (minimum 1.2m × 1.2m).
Q4: What about handrails and edge protection?
A: All ramps should have handrails on both sides (850-1000mm height) and edge protection where there's a drop.
Q5: Are there different requirements for public vs private buildings?
A: Public buildings have stricter requirements, but Part M applies to all new buildings and major renovations.