Riser — Underfoot element
Category: Underfoot element
Vertical step element in closed staircases.
The riser is the vertical connection between two treads. Staircases with risers are called closed stairs; those without risers are open stairs. The riser provides visual closure, increases stability, improves impact-sound insulation and prevents objects falling through between treads.
Related terms
Related terms: Tread, Tread Depth (Going), Rise (Step Height), Projection Depth, Open Stair, Stair Lighting.