Designing a narrow wheelchair ramp

A narrow wheelchair ramp is often appropriate for projects with limited space. We usually only install compact ramps when no other suitable exits are available. However, if a fully compliant system is obligatory regardless, then a reasonable amount of space is needed to achieve the minimum compliant ramp gradient and width.

Minimum Compliant Gradients & Widths:

Ramps for public use (whether to a building or space) require a minimum width of 1500mm, and often can accomplish a minimum ramp gradient of 1:15 or a 1:20 gradient is frequently specified.
The maximum gradient that your ramp can reach is determined by the change in rise (aka the height) to overcome.

If the maximum gradient has been reached, a resting platform must be provided to allow the user to pause, as they may become tired and out of breath.

Diagram – The relationship of ramp gradient to the going of a flight.

Compliant ramps for dwellings must meet a minimum width of 900mm and often a can accomplish a gradient of 1:12.

If you are having trouble achieving a fully compliant system, ask yourself if there is an alternative entrance that a ramp can be installed from?

There are some exceptions...

A Fire Exit With Restricted Space

If it is concluded that a ramp with a narrow width is the only design achievable, then ultimately, it is at the building controller’s discretion if they accept this.

In the event of a fire, a wheelchair user must have fast access out of the building. So arguably, it is better to have wheelchair access than none in such a circumstance. However, the specifier MUST attempt to achieve a system that is as close as possible to compliancy, with both Part M and K of the Building Regulations.

Compliant features that should be included on a narrow wheelchair ramp:

900mm High Infill handrails - This product prevents users from climbing or falling through gaps. It is often specified for schools and public buildings.

Yellow Tread Strips - A safety feature designed to help those with impaired vision identify the nose of the ramp or step. Additionally, it helps users distinguish any level changes.

Rest Platform (if appropriate) - A rest platform at every 5 metres of the ramp is required to allow the user to pause (please note that this isn't shown on the full drawing).
Compliant gradient – the ramp must be designed with a gradient that is close as possible to compliancy, with both Part M and K of the Building Regulations.

Our Rapid Ramp System is modular and comes in various widths to achieve a narrower system without fuss.

Historic buildings With Restricted Space

When specifying wheelchair access to historic buildings or spaces, there is a delicate balance at play.

Protected buildings need to be preserved; however, responsible adjustments must be made so that facilities can be compliant with DDA guidelines.

Therefore, a specifier working with a restricted historic space should attempt to achieve a system that is as close as possible to compliancy, with both Part M and K of the Building Regulations. This includes all compliant features, as discussed previously.

Furthermore, wheelchair access should be achieved with minimum or no damage to the building.

Our Rapid Ramp System is never bolted to walls to minimise any impact on buildings, and rubber or concrete pads can be added underneath the support feet. Throughout the process, we’re also happy to consult with the appropriate conservation and planning authorities.