By definition,a stationary ramp is an inclined ramp for entry or exit. Existing standards provide a ramp for wheelchairs if the difference between horizontal levels is more than 4 centimeters.
Ramp slope is defined as the ratio of lifting height to length of the horizontal projection of gradient section. At the beginning and end of a ramp for wheelchairs placed a special flat floor for easy entrance to a wheelchair. There is a special flat floor for wheelchair easy entrance to the ramp at the beginning and at the end of the ramp.