Stringer and Step Support Kit for Stairways

The present staircases are constructed of modular stringers for the on-site Installation of the staircases in a residential, commercial or industrial setting. Kits for erecting the staircases will include matingly or cooperatively coupling step support units defining the staircase stringers, a set of steps adapted to be mounted thereon, as well as various finishing elements and modules to provide a finished look to the completed staircases. The staircases presented herein include self-supporting staircases, linear staircases, curling or spiralling staircases and adjustable variations thereof. Each kit is designed to provide an easy installation of the staircases while providing for the erection of solid finished staircases.