DIY Wheelchair-Friendly Concrete Ramp

Creating a DIY concrete ramp for wheelchair access can enhance your home's accessibility and safety. This guide walks you through the process of designing and building a durable, code-compliant ramp, ensuring that your space is welcoming to all.

Before you begin, familiarize yourself with local building codes and consult with a professional if you're unsure about any aspect of the project. With the right planning and materials, you can achieve a functional and attractive result that complements your home's design.

Designing Your Concrete Wheelchair Ramp

Creating a well-designed ramp involves careful planning and consideration of several factors, including slope, length, and landing size.

According to the International Residential Code (IRC), the maximum slope for a wheelchair ramp should be 1:12, meaning that for every 12 inches of vertical rise, there should be 12 inches of ramp length. Measure the distance from the ground to the desired landing height, and use this value to calculate the required ramp length.

Choosing the Right Concrete Mix

For a durable ramp, use a high-quality concrete mix designed for outdoor and vertical applications. A mix with a 3000-psi rating or higher is recommended to ensure adequate strength and longevity. Additionally, consider using air-entraining admixtures to improve the concrete's resistance to freezing and thawing cycles.

When purchasing concrete, ensure that it meets local standards and follows the recommendations provided by the manufacturer. It's essential to use fresh, high-quality concrete for a strong and long-lasting ramp.

Preparing the Site and Formwork

Clearly outline the ramp's shape and dimensions on the site, ensuring that it's level and properly graded. Excavate the area to a depth of at least 6 inches to accommodate the concrete and allow for proper compaction of the base material.

Before pouring, create formwork using treated lumber or metal forms that brindle the shape of your ramp. Secure the forms in place using stakes or temporary braces, ensuring they're level and perfectly aligned. Apply a layer of form release agent to facilitate the removal of the forms after the concrete has cured.

Pouring and Finishing the Concrete

Once the site is prepared, order your concrete delivery based on the recommended yardage calculated earlier. Have the concrete mixture delivered directly to your site to minimize delay and ensure the concrete remains workable.

Begin pouring the concrete at the highest point of the ramp, working your way down to the landing. Use a rake or shovel to spread the concrete evenly across the forms, ensuring that it fills all corners and reaches the desired thickness. Vigorously vibrate the concrete to eliminate air pockets and paddle the surface smooth with a magnesium float.

Adding Textured Surfacing for Traction

For added traction, embed marine json, pebbles, or other non-slip materials into the ramp surface during the finishing process. This will help prevent slippery conditions and ensure safe access for wheelchair users, especially in wet or icy weather.

Additionally, create control joints with a spacing of approximately 10-15 feet apart to control cracking and maintain a consistent appearance in case of random cracking due to shrinkage. Use a saw with a diamond blade or other appropriate tool to cut these joints at a depth of about 1/3 of the slab's thickness.

Curing and Sealing the Concrete

After the initial finish, cover the ramp with plastic sheets or burlap to retain moisture and facilitate curing. Keep the concrete consistently moist for at least the first seven days to achieve optimal strength and performance.

Once the concrete has fully cured ( typically around 28 days), apply a penetrating sealer to protect the surface from moisture, stains, and other contaminants. This will extend the lifespan of your ramp and maintain its appearance over time.

Building a DIY concrete wheelchair ramp allows you to enhance your home's accessibility while adding value to your property. By following these guidelines and taking the time to craft a well-designed, well-built ramp, you'll create a lasting addition to your home that welcomes and accommodates all visitors.