The design specifications for wheelchair ramp handrails are to ensure that wheelchair users can use the ramp safely and conveniently. The following are specific design specifications summarized based on the search results:
1. Handrail height
- Barrier-free handrails generally require two layers of handrails. The lower level handrail height is 600mm to 650mm, and the high handrail height is 850mm to 900mm.
2. Handrail continuity
- Handrails should be provided on both sides of ramps, stairs and steps beyond the two poles and on the three sides of the perimeter of elevators, and the handrails should be kept continuous.
3. Handrail extension
- The handrails of ramps, stairs and steps should extend horizontally for more than 0.30m at the starting and ending points.
4. Handrail shape and specifications
- The shape, specifications and color of the handrail should be easy to identify and grasp. The size of the handrail cross-section should be 35mm to 50mm, and the clearance between the inner side of the handrail and the wall should be 40mm.
5. Handrail material
- The handrail should be made of high-quality wood or other better materials. The handrail must be installed firmly and should be able to bear the weight of the body.
6. Handrail safety measures
- When the height of the wheelchair ramp is greater than 300mm and the longitudinal slope is greater than 1:20, handrails should be installed on both sides, and the handrails of the ramp and the rest platform should be kept continuous. The presence of handrails can increase the user's sense of security and stability.
7. Relationship between handrails and ramp surface
- When the slope handrail and the lower end of the handrail are not less than 50mm, the slope safety device and the slope surface should be flat.
In summary, the design specifications of wheelchair ramp handrails cover multiple aspects such as height, continuity, extension, shape and specifications, material, safety measures, etc. The implementation of these specifications can effectively improve the safety of wheelchair ramp handrails and ensure that wheelchair users can use the ramp conveniently and safely.