CAD plan, elevation and tread-connection views of an indoor self-supporting metal spiral staircase. Wedge-shaped treads connect to the center column through projecting support arms and sleeves. A metal guardrail and handrail follow the circular stair layout; the metal alloy and finish are unspecified.
Author: Simone Sassoli
Simone Sassoli is an Architect and Construction Project Manager specializing in high-end retail, hospitality, and office projects across the United Kingdom and Europe, with experience delivering complex spaces for luxury brands and international clients.



















