This easy and stylish staircase is lit with bare bulb wall lights — the plan is by Nedgis. (Impression credit rating: Nedgis) The riser would be the vertical part involving Every tread to the stair. Not all stairs have risers. The rise-much less actions are often called the open thread. https://stairfactory.co.uk/Products/staircase-with-a-metal-stringer/