DCAN 11: Access for People with Disabilities
Changes in Level
Ramps where used should have a gradient of approximately 1:20 (maximum 1:12). Where ramps are steep (greater than 1:20) steps should also be made available. Long ramps require a level landing at 10 metre intervals. A level platform of adequate size should be provided at the entrance to the building and at the top and bottom of all ramps. Steps should have a maximum riser of 0.15 metres and a minimum tread of 0.28 metres. Handrails should be provided to both sides of ramps and steps. Intermediate handrails are necessary where the ramp or steps are wider than 2 metres. Handrails should extend beyond the top and bottom of the steps or ramp and should be provided with a positive safe end.