Spiral stair with rail
3D model · STEP · 1.8 MB
Need another format? Open it in the viewer and use Export.
Source: Innerscene - original model
Description
Spiral stair with rail, modeled from published dimensions. Overall 1.9 x 1.9 x 3.8 m. Key dimensions: floor rise 2800 mm; risers 16; riser 175 mm; outer radius 950 mm; column diameter 180 mm; turn deg 360. Original nominal stair design with explicit rise, run and handrail geometry. Building-specific landings, headroom, guard infill, anchorage and structural design remain outside this layout model. No building-code or accessibility compliance is claimed. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
File: stairs-spiral.step · added 2026-10-05 · available until 2031-10-05. Added from Innerscene - original model under its CC0 dedication; see the library terms. Think this part infringes someone’s rights? Use Report on the viewer page or see our copyright policy.