Modular curvilinear staircase

摘要

Provided as a curved staircase which extends between upper and lower levels of a building structure. The building structure has a plurality of spaced vertical wall studs. The curved staircase comprises a plurality of step modules each including a side panel, a front riser and a back riser. Each of the step modules is disposed in stacked relationship to one another to define a plurality of module joints. Each one of the step modules includes a tread which is mounted on the back riser and side panel as well as on the front riser of the next lowest step module. Inner and outer reinforcing panels are disposed in overlapping relationship to the step modules in order to interconnect the step modules.