3ds Max 2020 / 2022 / V-Ray 5.2.2 / FBX / OBJ / STL / Marmoset Toolbag 3.08

A stairway, staircase, stairwell, flight of stairs, or simply stairs, is a construction designed to bridge a large vertical distance by dividing it into smaller vertical distances, called steps. Stairs may be straight, round, or may consist of two or more straight pieces connected at angles.