What is the name of the slope next to the stairs?

The slope next to the stairs is usually called barrier-free ramp.

Pedestrian ramp: indoor ramp 1/8, outdoor ramp110, barrier-free ramp1/2. If it is not barrier-free, then there is no problem. If the steps of a building are less than or equal to two steps.

Supplement: Whether it is accessible or not is the designer's own business, and whether it is not greater than 10% or less has nothing to do with whether the step ramp exists at the same time. If you want to reach the barrier-free standard, you must be below112. In any case, the building of pedestrian ramps is the above standard, whether a single ramp or ramp steps coexist. Only if the barrier-free standard is reached, it must be below112. In road or site design, the slope is expressed as a percentage or a thousandth, and in buildings, it is generally expressed as an aspect ratio. This is what I learned in the first semester of architecture. As a specification, it is impossible to give a range, just a fixed value, so you don't need to look at the direct slope range in the answer. The reason why I mentioned the question of steps. In addition, you said that ramps are generally built next to steps to ensure that some vehicles (library books, ambulances in hospitals, taxis in hotels, etc.). ) can reach the entrance under the canopy, generally below110. It is not a barrier-free ramp. A real ramp is generally designed to make it easy for disabled people to get to a place like normal people, so this ramp will be slower than ordinary building ramps.