1 12 Slope Wheelchair Ramp1

Wheelchair Ramps Part 2 – Design

This post is part 2 of the Wheelchair Ramp Series. Be sure to read part 1 to learn more about the main components of a properly constructed wheelchair ramp – Wheelchair Ramps Part 1 – Overview and Part 3 – Wheelchair Ramps Part 3 – Aesthetics and Materials

Wheelchair Ramp Design

To begin designing your ramp the first consideration is how much rise (how high is the door above the ground) you need to get the elderly person up to the entry way of the home or mother in law suite.

1-12 slope wheelchair rampA ratio of 1:12 is the maximum slope that can be used for the ramp. This means that there must be 12 inches of handicap ramp length for every 1” of height. Even though this ratio is viable it can still be a little steep for some people to make there way safely up or down. It is preferable to use a ratio of 1:16 if possible for the most safe and convenient use by the wheelchair.

Wheelchair Ramp Shape

The shape of the ramp is very important in being able to fit it into your space. A straight line would be an obvious first choice but is rarely possible due to the length generated by the ratio formulas given above.
Some other shapes are the L shape, the switchback, and the U shape. It is advisable to provide a level platform with the required amount of turning radius at each turn to allow safe and easy maneuvering.

The maximum height between landings (or level turning areas) is 30” which in the case of the 1:12 slope is 30’ long and in the case of the 1:16 slope is 40’ long

Wheelchair Lifts

If your ramp is going to be over 30 feet long you may want to consider some other options such as a wheelchair lift to help your loved one access the home safely. A lift can take up 30 square feet or less in space and avoid the long ramps that would otherwise be needed to get your loved one up to the entryway.

If you do use a lift try to build it under a roof to prevent ice and water from building up on it making for a potentially dangerous situation. The costs of lifts can vary from $3,000 to $15,000 depending on the type of lift and other considerations such as concrete slab etc…

Be sure t0 check out Part 1 of this series – Wheelchair Ramps part 1 – Overview and  Part 3 – Wheelchair Ramps Part 3 – Aesthetics and Materials

What do you think about Wheelchair Ramps? Let us know by leaving a comment below!

About the Author

TomTom Bills is a Realtor/Broker with TBillshomes.com as well as the President of T. Bills Construction Co. since 1979. Tom is dedicated to helping people with buying, selling, or remodeling their homes and properties in the best way possible for each families unique needs. Read more about Why Tom and his wife Barb started In-LawSuite here. Find him on Facebook and TwitterView all posts by Tom →

  1. Nalin Kumar
    Nalin Kumar09-23-2010

    This is an excellent website and has helped to design accesible ramp for children with special needs in India.

    Thanks a lot!

    Nalin
    Physiotherapist

  2. Engineer
    Engineer04-13-2011

    Thank’s for this story

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