A ramp’s length is a consideration, especially for a building project with a tight budget. A long ramp with a rise of more than 6 inches (152 mm) will require handrails to facilitate the climb. There are ways to avoid that expense.
One alternative is two short ramps with a landing in-between to break up the climb. A second alternative is a flatter, less tiring route with a running slope of 1:20 or less.