Designing a staircase with a central stringer requires precision in both geometry and material selection:
In this configuration, the central beam acts as the primary "backbone" of the staircase. Unlike traditional stairs where the load is shared between two side stringers, the mono-stringer must be robust enough to handle the entire weight of the users and the staircase itself. Download design stair case with central stringer beam xlsx
: In reinforced concrete designs, the central stringer is typically designed as a T-beam . The "waist slab" (the flat part under the treads) acts as the flange of the T-beam and must also be designed to resist cantilevered loads from the treads. Designing a staircase with a central stringer requires