3D Circular Staircase Design with Plan and Detailed Layout Drawing

This 3D circular staircase design presents a detailed AutoCAD drawing, including plan layout and 3D visualisation of a spiral stair structure. The drawing clearly illustrates the circular geometry with evenly distributed steps central core, and a surrounding railing design ensuring smooth vertical movement and space efficiency. It includes accurate step division, radius alignment, and handrail positioning for safe and functional use.