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What Is The Slope Of A Wheelchair Ramp?

What Is The Slope Of A Wheelchair Ramp

Imagine facing an insurmountable obstacle whenever you wanted to access a building or enjoy a public space. For millions of individuals with mobility challenges, this is an everyday reality. Now, picture a simple solution—a path that bridges the gap, providing equal access to all. This is the power of a wheelchair ramp.

But have you ever stopped to consider the slope’s critical role in making these ramps genuinely functional? Wondering what is the slope of a wheelchair ramp?

In this thought-provoking blog post, we invite you to join us on a journey of discovery as we unravel the mysteries of wheelchair ramp slopes. From the science behind inclines to the practical considerations of construction, we’ll unlock the secrets to designing ramps that empower, rather than hinder, individuals with disabilities in Australia.

Get ready to dive deep into the world of accessibility and embark on a mission to create a more inclusive future for all.

The ramp’s length and incline must be taken into account before construction can begin. If there are stairs, how long should the ramp be for a wheelchair? It’s recommended that you begin with the Australian Standards 1428.1 – 2009.

What Are The Australian Standards 1428.1 – 2009?

New construction must adhere to the specifications outlined in Australian Standard 1428.1-2009. Developers and architects use the guidelines to guarantee their projects are accessible to those with special needs, such as those with limited mobility. Consistent with the Australian Building Code and Disability Standards, Australian Standard 1428.1 – 2009 was published in 2009.

The question is, what does this imply for you? To be fair, the Australian Standards are relevant exclusively for industrial and institutional construction projects. That’s why they’re optional when building a residential wheelchair ramp.

Consequently, there is little flexibility in terms of the required wheelchair ramp slope for home use. However, you should still adhere to the Australian Standards while constructing your ramp for safety.

What is AS1428?

According to the Premise Standards, AS1428 is mandatory for all newly constructed buildings and existing structures undergoing renovations to meet DDA requirements. The DDA raises awareness of such concerns without imposing any new regulations on construction.

What Are The Examples Of As1428? 

The Australian Standard (AS) 1428 is a set of requirements that must be met for a facility to be considered “disabled-accessible.” For instance, pathways should be level and barrier-free so that everyone can efficiently utilize them. One other case in point is the need to have accessible restrooms.  

AS1428 discusses the need for these amenities and the importance of giving individuals the most incredible possible experience while utilizing them. For instance, half of all public restrooms should include gender-neutral stalls that provide directions to other available facilities.

Read Also: How to Calculate Ramp Gradient 

The Ideal Slope For A Wheelchair Ramp 

Having defined the Australian Standards, we can go on to figure out how they affect you specifically. According to the elevation of the step or level modifications, the optimal length of a wheelchair ramp may be determined. Instead of giving you an exact measurement, we will discuss the needed slope for a wheelchair ramp.

The steepest permitted incline is 1:8 when the total step height is less than 35 mm. To Artain level ramp is often installed at entrances and on elevated platforms. To accommodate those with mobility issues, the highest allowed slope for a step ramp is 1:10, so long as the total height ranges from 35mm to 190mm.

The maximum permissible gradient for an elevated step ramp is 1:14, meaning that this kind of ramp has a height of 190mm or more.

Access ramps for public buildings have more stringent regulations than private residences since they must adhere to AS1428.1. We advise you to speak with a specialist in accessible design in this scenario and must go through a wheelchair ramp slope chart for a standard ramp slope.

Is There a Difference in the Need for a Wheelchair Ramp If It Is Currently Occupied vs. Unoccupied?

If someone will use a wheelchair or not will also affect the appropriate ramp slope. It is recommended that wheelchair users never face an angle of more than 10% when seated. The wheelchair ramp might be as steep as 12–13 degrees if it will not be used.

When it comes to van and vehicle wheelchair ramps, it is common to come across angles of up to 12 and 13 degrees. These steeper inclines are often necessary due to the substantial height difference between the ground and the vehicle. In such cases, it becomes more practical to load the wheelchair onto the ramp while it is unoccupied.

These steeper angles allow for smoother and more efficient loading and unloading processes, ensuring convenience for the wheelchair user and their caregiver or assistant.

By accommodating the height disparity between the ground and the vehicle, ramps with higher angles enable easier access and transfer of wheelchairs, providing a practical solution for individuals with mobility challenges on the move.

Read Also: How To Build A Wheelchair Ramp For Stairs

Factors To Consider When Determining An Appropriate Slope

When determining an appropriate slope for a wheelchair ramp, several factors should be considered to ensure optimal usability and safety. These factors include:

1. Accessibility Regulations

Familiarize yourself with the relevant accessibility regulations and guidelines in your country or region. For example, in Australia, the Australian Standards 1428.1 – 2009 provide specific requirements for wheelchair ramp design, including slope limitations.

2. User Needs

Consider the specific needs of the individuals using the ramp. Take into account the type of mobility devices (e.g., manual wheelchair, power wheelchair, scooter) and the abilities of the users. This will help determine the appropriate slope that ensures comfortable and safe access for all.

3. Space Limitations

Assess the available space for the ramp installation. Sometimes, space constraints may impact the maximum allowable slope. Ensure the ramp fits within the available area without compromising safety or usability.

4. Ramp Length

The longer the ramp, the more gradual the slope. Longer ramps provide a gentler incline, making it easier for wheelchair users to navigate. Consider the available space and the required length to achieve a safe and manageable slope.

5. Environmental Factors

Consider the environmental conditions where the ramp will be installed. Weather conditions (rain, snow, ice) and obstacles (curbs, stairs) can affect the ramp’s slope requirements. Ensure that the slope is suitable for safe use in various weather conditions.

6. User Experience and Comfort

Strive to create a ramp that offers a comfortable and smooth experience for wheelchair users. Avoid excessively steep slopes that may cause discomfort or difficulty propelling or controlling the wheelchair.

7. Safety Considerations

Safety is paramount when designing a wheelchair ramp. Consider features such as handrails, non-slip surfaces, and level landing areas at the top and bottom of the ramp. These elements contribute to the overall safety and stability of the ramp, complementing the chosen slope.

8. Local Building Codes

Consult local building codes and regulations to ensure compliance with all relevant requirements. Building codes may include specific slope limitations or other guidelines that must be followed for the ramp’s construction.

Read Also: How To Build A Wheelchair Ramp Off A Deck

Commercial vs. Residential Wheelchair Ramp Slope Requirements

Commercial wheelchair ramps and residential wheelchair ramps in Australia have distinct differences in terms of slope requirements. Commercial ramps are subject to Australian Standards 1428.1 – 2009, which provide comprehensive guidelines for accessible design in commercial buildings.

According to these standards, the maximum slope for a commercial wheelchair ramp should not exceed 1:14, which translates to an approximate slope of 7.14 degrees. This means that there should be 14 units of horizontal run for every unit of rise.

These specific slope requirements ensure optimal accessibility and safety for individuals with disabilities or impaired mobility in commercial settings.

However, when it comes to a wheelchair ramp slope for a home, the slope requirements are more flexible. Unlike commercial ramps, there are no strict mandatory slope regulations for residential ramps in Australia. This allows for greater freedom in designing and constructing residential ramps to meet the unique needs of individual homeowners.

While the Australian Standards do not explicitly apply to residential ramps, following the standards as a best practice is still advisable to ensure safety and accessibility.

Even though there is no mandatory compliance with Australian Standards for residential ramps, adhering to local building codes and regulations is crucial. These codes may contain specific guidelines or recommendations for slope requirements, handrails, landings, or other safety features.

Read Also: How Can I Get A Free Wheelchair Ramp?

Methods For Calculating The Slope Of A Wheelchair Ramp

  • Rise and Run Method: This method involves measuring the vertical rise (the height difference between the starting and ending points of the ramp) and the horizontal run (the length of the ramp). The slope is then calculated by dividing the rise by the run. For example, a ramp with a 1-meter rise and a 10-meter run would have a slope of 1:10.
  • Angle Measurement Method: Using a digital angle finder or an inclinometer, the angle of the ramp can be directly measured. This angle can be compared to the recommended slope requirements to determine compliance.

Tools And Resources Available For Accurate Slope Measurement

  • Digital Angle Finder: This handheld tool provides precise angle measurements. It typically features a digital display showing the ramp’s exact slope angle.
  • Inclinometer: An inclinometer is a device that measures the tilt or slope of a surface. It can be attached to a smartphone or used as a standalone tool to measure ramp slopes accurately.
  • Online Calculators: Several online resources and mobile applications are available that can calculate the slope of a wheelchair ramp based on the rise and run measurements provided. You can easily access and use a wheelchair ramp slope calculator online.

Ramp Slope Ratio For Walking

At least 2000 mm in height (or 1980 mm at doors) and 1000 mm in wheelchair ramp width (or wider) for each ramp along a wheelchair-friendly route. The minimum length for a ramp is 1900 mm, and the maximum ramp slope for walking is 1:14 (1:20 is recommended)—installation of signage inside the specified “Zones for Viewing” per Australian Standards.


Accurate calculation and measurement of wheelchair ramp slopes in Australia are essential for compliance, safety, and accessibility. Utilizing appropriate methods, tools, and resources ensures precision and facilitates the creation of ramps that meet the required standards and provide optimal accessibility for wheelchair users.