Making stairways…with a twist/Job shop forms curved, spiral staircase stringers

摘要

Walk into any modem an gallery, upscale hotel, or contemporary civic center, and if the lobby has a spiral staircase, it's likely to be one of the first things you'll notice. A straight set of stairs is good enough for getting from one floor to another, but a curved or spiral staircase brings a stylish, sophisticated atmosphere to a lobby, atrium, or foyer. And from a fabrication standpoint, a curved staircase can be a sophisticated project indeed. In particular, the stringers and handrails--that is, the support pieces underneath the steps and the railing that runs alongside the staircase--must follow the architect's precise specifications in form and function.