Ramp Calculator
Calculate ramp dimensions for wheelchair accessibility and building compliance
Calculate Ramp Specifications
Enter any two values to calculate the third. All calculations follow UK Building Regulations Part M guidelines.
Calculation Results
UK Building Regulations for Ramps
Important: These calculations are based on UK Building Regulations Part M. Always consult with a qualified professional for final design approval.
Maximum Gradients Permitted
| Ramp Length | Maximum Rise | Maximum Gradient | Application |
|---|---|---|---|
| Up to 2m | 166mm | 1:12 | Short access ramps |
| Up to 5m | 333mm | 1:15 | Medium length ramps |
| Up to 10m | 500mm | 1:20 | Standard accessibility ramps |
Essential Design Requirements
- Width: Minimum 1.5m clear width between handrails for public buildings
- Surface: Non-slip, firm and stable surface material required
- Landings: Level landings of at least 1.2m length at top and bottom
- Handrails: Required on both sides for ramps over 2m length or 150mm rise
- Maximum flight: No single ramp flight should exceed 10m without a rest platform
Ramp Types and Applications
Temporary Ramps
Portable ramps for temporary access needs, typically steeper gradients (up to 1:4) acceptable for very short distances with assistance. Ideal for threshold access and short-term solutions.
Permanent Installation Ramps
Fixed ramps that must comply with full building regulations. Required for new builds and major renovations. Must follow strict gradient, width, and safety requirements.
Modular Ramp Systems
Semi-permanent solutions that can be adjusted or relocated. Popular for residential adaptations and temporary building access modifications.
Safety Considerations
Safety First: Steeper gradients require more physical effort and pose greater risks. Always prioritise user safety over space constraints.
- Consider the primary users’ mobility levels and strength
- Weather protection may be needed for outdoor ramps
- Adequate lighting should be provided for safe navigation
- Regular maintenance checks for surface condition and structural integrity
- Clear signage for gradient warnings where appropriate
Frequently Asked Questions
What is the ideal gradient for wheelchair users?
The gentler the gradient, the easier and safer the ramp. 1:20 is preferred for independent wheelchair use, whilst 1:15 is acceptable for shorter distances. 1:12 should only be used for very short ramps under 2 metres.
Do I need planning permission for a ramp?
Most residential ramps don’t require planning permission, but building regulations approval may be needed. For listed buildings or significant alterations, always check with your local authority first.
How wide should a wheelchair ramp be?
Minimum 1.5m clear width for public buildings, though 1.2m may be acceptable for residential use. Wider ramps provide better manoeuvrability and safety margins.
What materials are best for ramp surfaces?
Non-slip materials are essential. Options include textured concrete, treated timber with anti-slip strips, or metal grating. The surface must be firm, stable, and weather-resistant.
How often should ramps be inspected?
Monthly visual checks for obvious damage, with annual professional inspections recommended. Check for loose handrails, surface wear, drainage issues, and structural integrity.