Tread is a scrap of the stairway that is stepped in. It is the top or horizontal surface to press beneath the feet.
A simple rectangular tread can be used on staircase designs.
In residential settings, treads can be covered in carpeting.
You can display tread numbers for a run in plan, elevation or section view.
The riser is the vertical portion between each tread on the stair. Not all stairs have risers. The rise-less steps are known as the open thread. Open riser stairs have grown in popularity in recent years. Closed tread stair has risers included.
Stair case section
