What Is the Rise or Run for Installing a Handicapped Ramp?


The Americans with Disabilities Act Accessibility Guidelines for Buildings and Facilities (ADAAG) provides technical requirements for handicapped ramps. The rise and run for ramps can be calculated using ADAAG's slope guidelines.

Definition of Rise and Run

  • Any ramp or other sloped surface can be described in terms of rise and run. The rise is the vertical distance between a ramp's top and bottom, while the run is the horizontal distance from the ramp's start to end, measured perpendicular to the run.

Calculating Rise and Run

  • A ramp's slope is calculated by dividing the rise by the run---a formula commonly used to calculate the run required for needed rise. ADAAG sets the maximum slope for a handicapped ramp at 1:12, meaning that for 1 inch of rise, a minimum 12-inch run is required.

Additional Installation Planning Factors

  • When calculating the entire space that a handicapped ramp installation requires, it is important to note that ADAAG limits single continuous ramps to 30 inches maximum in height. Greater rise requires multiple ramps built with 60-inch minimum length landings between. ADAAG's guidelines hold additional clearance requirements for various ramp configurations.

Related Searches


  • Photo Credit warehouse door with staircase entry image by Bo Widerberg from Fotolia.com
Promoted By Zergnet


You May Also Like

  • How to Measure a Wheelchair Ramp

    A wheelchair ramp creates more mobility to enter and exit buildings, houses, porches and decks, and vehicles. The most important aspect of...

  • How to Figure the Ratio of ADA Ramp

    The Americans with Disabilities Act of 1990 established guidelines for the construction of new wheelchair ramps. These guidelines include ratio requirements for...

  • Dimensions of Handicap Ramps

    Access is a major consideration for a handicapped person. People in wheelchairs or with other mobility issues require sloped access to access...

  • Uniform Building Code for Stairs in California

    The building codes that California uses are based on those found in the Uniform Building Code, or UBC, instituted in 1927. UBC...

  • How to Calculate the Slope on a Ramp

    When calculating the slope on a ramp, use the formula of rise over run. Reduce the fraction when calculating the slope on...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!