Forward Reach and Side Reach Requirements
ADA regulations establish specific reach limitations for wheelchair users to ensure that controls, dispensers, and other operable elements are accessible. These requirements apply to various building elements including water fountains, telephones, and other common amenities.
Forward Reach
Forward reach specifications define how far and how high a wheelchair user can reach when approaching an element from the front.
High Forward Reach Limit
| Specification | Requirement |
|---|---|
| Forward reach height | 48" min. |
| Toe clearance depth | 15" max. |
| Clear floor space depth | 48" |
| Clear approach width | 30" min. |
Maximum Forward Reach Over an Obstruction
When reaching over an obstruction (such as a counter), the following dimensional relationships apply:
| Condition | Height Requirement (Y) |
|---|---|
| When X is less than 20 inches | Y shall be 48 inches maximum |
| When X is 20 to 25 inches | Y shall be 44 inches maximum |
Additional Requirements:
- X shall be less than or equal to 25 inches
- Z shall be greater than or equal to X
- Clear floor space: 48" min.
These specifications ensure wheelchair users can reach controls or objects placed on or above obstructions while maintaining proper body positioning.
Side Reach
Side reach specifications apply when a wheelchair user approaches an element from the side, parallel to the surface.
Clear Floor Space Parallel Approach
| Specification | Requirement |
|---|---|
| Reach depth | 10" max. |
| Clear width | 30" |
| Clear length | 48" |
High and Low Side Reach Limits
| Specification | Requirement |
|---|---|
| Reach depth over obstruction | 10" max. |
| High side reach | 54" max. |
| Clear approach width | 30" min. |
| Low reach height | 9" min. to 15" max. |
Maximum Side Reach Over Obstruction
When reaching over an obstruction from a side approach:
| Specification | Requirement |
|---|---|
| Clear width | 30" min. |
| Obstruction depth | 24" max. |
| Reach height over obstruction | 34" max. |
| High side reach | 48" max. |
Note: These diagrams and specifications illustrate the specific requirements of these regulations and are intended only as an aid for building design and construction.
These reach requirements are applied throughout the facility to ensure accessibility of controls, dispensers, and operable parts. For specific applications of these requirements, see Water Fountains and Public Telephones.