Final answer:
Handrails on ramps must be at a minimum of 34 inches and a maximum of 38 inches in height according to ADA standards.
Step-by-step explanation:
The minimum height of a handrail for a ramp is 34 inches while the maximum is 38 inches. These measurements ensure that handrails are accessible to most users, providing support and stability on the ramp.
This is in accordance with the Americans with Disabilities Act (ADA) Standards for Accessible Design, which stipulate the requirements for the dimensions and placement of handrails to make facilities more accessible.