A spiral staircase can really change the aesthetic of a space and be an eye-catching centerpiece – it is typically a type of round or curved stair where the steps are connected to and rotating around a center column to form a complete circle. Spiral staircases were known to bring a sense of luxury to important architecture like palaces and churches, but in our modern-day, they can be comfortably used anywhere – spiral stairs can produce really innovative staircase ideas!
Photography by © Mark Cocksedge
Do spiral staircases save space?
Spiral staircases do save space – this is why they were invented in the first place. The reason is the fact that all the steps are located within a diameter regardless of the staircase’s height.
What is the minimum diameter for a spiral staircase?
The minimum diameter for a spiral staircase differs according to your country’s building code. However, a minimum of 5’ is generally accepted and comfortable.
How to Calculate Spiral Staircase Dimensions?
© Matheus Pereira
length of helical staircase = (π (Pi) x radius x angle of rotation) / 180)
© Matheus Pereira
© Matheus Pereira
© Matheus Pereira
Daniel Mercer is a Coffee Break section editor at Arch2O, currently based in Berlin, Germany. With a background in architectural history and design journalism, Daniel holds a Master’s degree from the University of Edinburgh, where he focused on modern architecture and urban theory. His editorial work blends academic depth with a strong grasp of contemporary design culture. Daniel has contributed to several respected architecture publications and is known for his sharp critique and narrative-driven features. At Arch2O, he highlights innovative architectural projects from Europe and around the world, with particular interest in adaptive reuse, public infrastructure, and the evolving role of technology in the built environment.