Number of staircases in my country is given by distance from furthest point (max 20m so you need to have 2 staircases if there is corridor longer then 20m). But

Number of staircases in my country is given by distance from furthest point (max 20m so you need to have 2 staircases if there is corridor longer then 20m). But when the distance is satisfied capacity can by met by dimensions of the particular staircase.