steps above ground
The number of steps in a single path from the base of a structure to its highest accessible level.
This number is not increased by the addition of further stairwells (that is covered by the number of steps in all stairways). It refers only to one path from the bottom to the highest level reached by any stairway. If more than one set of steps leading up a structure is available, and the various paths do not have the same number of steps, then the path with the lowest number of steps determines the number of steps above ground.
The normal height for a step is approximately 10 centimeters, with a nearly equal or greater length sufficient to support persons climbing on it.