Maximum Slope For Wheelchair Ramps Ramp Guidelines and Regulations

Portable Wheelchair Ramp Calculator for a 1:8 Gradient Slope

Select height of step:  

Wheelchair Ramp Gradient Calculator provided by Access Appraisals Ltd.

Update: New Building Regulations from October 2015 – Access to and use of buildings: Approved Document M

Read more about Regulations regarding ramps here – Wheelchair Ramp Guidance and Regulations

We updated our wheelchair ramps sites the other day to provide information about wheelchair ramp gradients and how steep wheelchair ramps should be.

The CAE (Centre for Accessible Environments) say the maximum gradient for wheelchair ramps is 1:12, with the occasional exception in the case of short, steeper ramps when refitting existing buildings.

The gradient also depends on the going of the flight with longer goings requiring shallower gradients.

The maximum height a single ramp should climb before incorporating a landing/rest area is 500mm which should have a gradient no steeper than 1:20 as the height gets lower the ramp can become steeper on a sliding scale with a 333m height requiring a 1:15 gradient and a 166mm height requiring 1:12 gradient

Further information on wheelchair ramp regulations and wheelchair ramp guidelines can be found here –

Portable Wheelchair Ramps

As a general rule most ramp manufacturers recommend a gradient no steeper than 1:12 for independent use and 1:10 for assisted use.

A simple calculation for finding out ramp lengths is to multiple the height by the ratio.

i.e. if working on a 1:12 ratio multiply the height of step by 12 to give you the minimum length of ramp.

6″ step x 12 = 72″ (6ft ramp)

Aerolight Extra Wheelchair Ramp – The perfect portable ramps for auxiliary aids

Aerolight Wheelchair Ramps
Available in lengths 2ft – 8ft (0.6m – 2.4m)

Quick and easy to set up

Single fold down length of ramp

Clips together when folded


Note: always do your own risk assessment before deciding on ramp gradient as guidelines generally say a maximum gradient of 1:12 or 1:15 for public use.

See our full range of Portable Wheelchair Ramps »

© 2017 Access Appraisals Ltd. Shipston-on-Stour, Warwickshire, CV36 5AB
Registered in England & Wales. Company no. 04537420, VAT no. 812494925