Central spine staircase design is a key element in modern architecture. A well-designed central spine staircase can enhance the overall look and feel of a home while providing functionality. Design Considerations Material Selection: Wood for warmth, steel for an industrial look. Tread Shape and Size: Curved or straight treads depending on space and style. Balustrade Option... https://visionarystairways.co.uk/central-spine-staircase-design-c/