This monumental staircase spans 3 floors, with aluminum “skylight” (1”x5” solid frame) above. Before even bidding, we had several meetings with architects to collaborate on final design. Still, well into construction we realized that their 3D software showed the C15x50 curving in ways C15x50 just does not curve.
The legs of the stringers are visible features, and the railing is offset 4” instead of being mounted to the top or face of the stringer. Result: each layer of the design (handrail, stringer, newel, inner/outer ribbons, top rail, and balusters) has a different radius.
Greatest challenge? Depends on who you ask. Drafter: 7 layers of curved designs laid out on 2-D software. Fabricator: tight building schedule = complex rails built separately from stairs. Finisher: gilding 28 feet up, scissors lift waving like a palm tree in a hurricane.
The staircase & rail are steel with cast iron elements. Fabrication Techniques included rolling, plasma cutting, forging, MIG welding, swearing, spitting.