Example: To overcome a height difference of 200 mm and a maximum gradient of 1:5 a ramp of 1000 mm long would be suitable (5 x 200 = 1000).

A gradient of 1:12 is desirable where possible.

Where level access is not achievable, ramps enable wheelchair users and people with pushchairs to overcome level changes.

• Ramps should be accompanied by steps for ambulant disabled people where the rise of the ramp is greater than 300mm and by alternative means of access (a lift, for example) for wheelchair users if the total rise is greater than 2m.
• Ramped approaches should be clearly signed if not readily apparent.
• The permissible gradient of a ramp is dependent on the length between level landings (the ‘going of the flight’). However, it should be noted that a route with a gradient of 1:20 over a significant distance can still be a potential barrier.
• Ramps should be as shallow as possible. The maximum permissible gradient is 1:12, with the occasional exception in the case of short, steeper ramps when refitting existing buildings.