Handrails should be provided on both sides of a ramp or stairs in order to support people with reduced mobility and guide people with visual difficulties.

There should be two rails, one at a height of 90 cm and another at 70 cm (for children and people of short stature).

Sketch of a ramp outside a house and with two level handrails around
© CBM 2015

The shape of handrails should be cylindrical in order to facilitate the grasp (diameter between 40 and 50 mm).

Requirements for handrails and grab bars design
© CBM 2015
A sketch of the measurements of a handrail for best grip.
© CBM 2015

For security, handrails must also be installed with a ramp higher than 40 cm to avoid the falling risk and they shall be solid enough to support body weight.

Sources