This architectural drawing is Section of staircase in detail AutoCAD drawing, dwg file, CAD file. Riser and tread are the staircase's two basic building blocks. The riser, which is a vertical piece that divides the treads, is the horizontal component where we put our feet. The side of a staircase where the treads and risers are visible from the side is the outside string. The board that forms the face of a step is called a riser. The horizontal step edge known as a staircase nosing is frequently utilized in areas with heavy foot traffic. For more details and information download the drawing file.